The graph of an equation can be identified by looking at the characteristics of the equation, such as the order.
Quadratics
The equation given is quadratic because the highest exponent is 2; this means the equation has an order of 2. All equations with an order of 2 are quadratic equations. Quadratic equations form parabolas, which look like a U. Additionally, the leading coefficient is positive. This means that the parabola will open upwards, with the vertex being the minimum of the graph.
Other Characteristics
We can find more information from the equation to help us find the graph. Specifically, we can find the y-intercept. To find the y-intercept, simply plug 0 in for x and solve.
g(0) = 3(0)² - 24(0) + 45g(0) = 45This means that the y-intercept is 45.
Additionally, to find the x-coordinate of the vertex, we can use the equation -b/(2a).
[tex]\frac{-b}{2a}[/tex] = [tex]\frac{24}{6}[/tex] = 4The x-value of the vertex is 4. With all of this information, we can identify what the graph will look like. However, if you need to find the full graph, you can plug x-values into the equation, solve for y, and then plot the coordinate pairs. Below is a picture of the graph.
Approximate the volume of a sphere with a radius of 7 feet, both in terms of pie and to the nearest tenth.
The volume of the sphere with a radius of 7 feet is therefore 1436.8 cubic feet when expressed in terms of pi and rounded to the closest tenth (or about 1436.76 cubic feet).
what is volume ?The volume of such a three-dimensional object is the amount of space it takes up in algebra and geometry. It is a description of an object's capacity and, depending on the situation, may be stated in terms of cubic metres, cubic centimetres, litres, or gallons. A cube's volume, for instance, can be determined by adding up its length, width, and height. An equation for calculating a cube's volume is: V = l × w × h where V indicates for volume, l for length, w for width, and h for height.
given
The following equation determines a sphere's volume:
[tex]V = (4/3)\pi r^3[/tex]
where r denotes the sphere's radius.
If we substitute r = 7 feet, we obtain:
[tex]V = (4/3)\pi (7 feet)^3[/tex]
Using V, 1436.76 cubic feet (3.14159)
To the nearest tenth, we round and obtain:
1436.8 cubic feet equals V.
The volume of the sphere with a radius of 7 feet is therefore 1436.8 cubic feet when expressed in terms of pi and rounded to the closest tenth (or about 1436.76 cubic feet).
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Kayla has three different sizes of plates. 7.G.4
Part A: The table shows the circumferences of the plates. Find the radius
and diameter for each plate. Use 3.14 for T.
43.96
28.26
Circumference (in.)
Radius (in.)
Diameter (in.)
21.98
Part B: How did you find the radius and the diameter of each plate?
So the radius and diameter for each plate are:
Plate 1: radius ≈ 7 in., diameter ≈ 14 in.
Plate 2: radius ≈ 4.5 in., diameter ≈ 9 in.
Plate 3: radius ≈ 3.5 in., diameter ≈ 7 in.
What is circumference?Circumference is the distance around the edge of a circle. It is the total length of the boundary of a circle. It is also referred to as the perimeter of a circle. The circumference of a circle can be calculated using the formula: C = 2πr where C is the circumference, r is the radius of the circle, and π is a mathematical constant with an approximate value of 3.14. The circumference of a circle is directly proportional to its radius; that is, as the radius of a circle increases, the circumference also increases.
Here,
Part A:
To find the radius and diameter of each plate, we can use the formula for the circumference of a circle:
C = 2πr
where C is the circumference and r is the radius. We can rearrange this formula to solve for the radius:
r = C / 2π
Using the given circumferences and the value of π as 3.14, we can find the radius for each plate:
Plate 1:
C = 43.96 in.
r = 43.96 / (2 x 3.14) ≈ 7 in.
d = 2r ≈ 14 in.
Plate 2:
C = 28.26 in.
r = 28.26 / (2 x 3.14) ≈ 4.5 in.
d = 2r ≈ 9 in.
Plate 3:
C = 21.98 in.
r = 21.98 / (2 x 3.14) ≈ 3.5 in.
d = 2r ≈ 7 in.
So the radius and diameter for each plate are:
Plate 1: radius ≈ 7 in., diameter ≈ 14 in.
Plate 2: radius ≈ 4.5 in., diameter ≈ 9 in.
Plate 3: radius ≈ 3.5 in., diameter ≈ 7 in.
Part B:
To find the radius and diameter of each plate, we used the formula for the circumference of a circle and rearranged it to solve for the radius. We then used the formula for the diameter of a circle, which is simply twice the radius, to find the diameter. We also used the value of π as 3.14 in our calculations.
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Kyla brought pies to a picnic. After the picnic, Kyla noticed 16/8 of the pies were eaten.
How many of the pies that Kyla brought to the picnic were eaten?
A. 16
B. 8
C. 2
D. 1
The number of pies that Kyla brought to the picnic were eaten = 2
The correct answer is an option (C)
According to the statement 'after the picnic, Kyla noticed 16/8 of the pies were eaten.'
We can observe that the number of pies that Kyla brought to the picnic were eaten is given by the fraction 16/8
Now we simplify this fraction.
We know that 16 = 8 × 2
So the numerator of the above fraction becomes,
16/8 = (2 × 8) / 8
= (2 × 8)/(1 × 8)
= 2/1 ........(cancelling common factor)
= 2
Therefore, 2 pies were eaten.
The correct answer is an option (C)
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What is -1 1/2 1 7/10 1 2/5 -1 4/5 from greatest
The numbers from least to greatest are: -1 4/5, -1 1/2, 1 2/5, 1 7/10.
To compare these numbers, we need to convert them to a common format. One option is to convert them all to improper fractions, so we can compare them more easily.
An improper fraction is a fraction where the numerator (the top number) is greater than or equal to the denominator (the bottom number). In other words, the fraction represents a value that is greater than or equal to one.
-1 1/2 = -3/2
1 7/10 = 17/10
1 2/5 = 7/5
-1 4/5 = -9/5
Now we can order them from least to greatest:
-3/2 < -9/5 < 7/5 < 17/10
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The given question is incomplete, the complete question is:
What is -1 1/2, 1 7/10, 1 2/5, -1 4/5 from least to greatest
A recipe for lemonade uses 5 scoops of mix for every 4 cups of water mai says:
"no matter how much lemonade you make, there is always one more scoop of mix than cups of water"
Is she correct?
Answer:
Step-by-step explanation:
yeah she is... i think.. this is twisting my mind rn
It is possible to bisect any given angle using only a straightedge and a compass.
The process of bisecting an angle with a straightedge and compass is an important process in geometry. It is used to prove theorems, construct regular polygons, and much more. With enough practice, anyone can perfect this process and use it to their advantage.
What is angle?Angle is a mathematical concept that describes the relationship between two lines (or edges) that share a common point (or vertex). It is measured in degrees, with a full circle being equal to 360 degrees. Angles can be either acute (less than 90 degrees), right (equal to 90 degrees), obtuse (greater than 90 but less than 180 degrees), or straight (equal to 180 degrees). Angles can also be classified as complementary (two angles whose sum equals 90 degrees) or supplementary (two angles whose sum equals 180 degrees).
1. Draw two rays from the vertex of the angle, and label them A and B.
2. Place the compass at A and draw an arc that intersects both rays.
3. Place the compass at B and draw an arc that intersects both rays.
4. The two arcs intersect at the bisector of the angle.
Bisecting an angle with a straightedge and compass is a simple process, but requires some practice to perfect. The process of bisecting an angle can be used to prove theorems in geometry, such as the Angle Bisector Theorem, which states that the bisector of an angle divides it into two congruent angles. This theorem can be used to prove the equality of two angles, or to construct an angle with a given measure.
Bisecting an angle can also be used to construct regular polygons, such as a hexagon. To construct a regular hexagon, one can use the process of bisecting an angle to construct six congruent angles. These angles can then be connected to form the sides of the hexagon.
The process of bisecting an angle with a straightedge and compass is an important process in geometry. It is used to prove theorems, construct regular polygons, and much more. With enough practice, anyone can perfect this process and use it to their advantage.
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Sarah and Nathan each picked a bucket of strawberries. Sarah picked 4 1/4 pounds, and Nathan picked 3 3/4 pounds. How many pounds did they pick altogether?
8 pounds
8, 1/2, pounds
7 1/2 pounds
7 pounds
Answer:
8 pounds
Step-by-step explanation:
Simply add the fractions. Think of mixed fractions as whole numbers + fractions.
[tex]4\frac{1}{4} =\\4+\frac{1}{4} \\\\\\3\frac{3}{4} =\\3+\frac{3}{4}[/tex]
Now, add all the terms together:
[tex]4+\frac{1}{4}+3+\frac{3}{4} =\\\\ 7+\frac{4}{4}[/tex]
4/4 can be rewritten as 1, so we have:
[tex]7+\frac{4}{4} =\\\\ 7+1= \\\\8[/tex]
Thus, Sarah and Nathan picked 8 pounds of strawberries altogether.
10 friends arrive to get their covid vaccine during a particular time slot. during that time slot there are 4 identical nurses administering shots, but 1 of the nurses may (or may not) be scheduled for a break during the time slot in which the friends arrive. also, how long it takes the nurses to administer a shot varies wildly, so the nurses working during the time slot are guaranteed to serve at least 1 person, but how many additional people they are able to serve is arbitrary. how many different combinations are there for the number of patients served by the nurses?
There are infinite combinations for the number of patients served by the nurses in both cases, considering the variability of the number of patients served by each nurse.
To calculate the different combinations for the number of patients served by the nurses, we need to consider the possible scenarios of the nurse who may or may not take a break during the time slot.
Case 1: The nurse who may take a break serves patients
In this scenario, all 4 nurses are administering shots and the nurse who may take a break is also serving patients. Let's say the nurses are able to serve x, y, z, and w patients respectively, where x, y, z, and w are arbitrary numbers. Then the total number of patients served is x + y + z + w. Since the nurses are able to serve an arbitrary number of patients, there are infinite combinations of x, y, z, and w that can add up to the total number of patients served. Therefore, there are infinite combinations for the number of patients served by the nurses in this case.
Case 2: The nurse who may take a break does not serve patients
In this scenario, only 3 nurses are administering shots and the nurse who may take a break is not serving patients. Let's say the 3 nurses are able to serve x, y, and z patients respectively. Then the total number of patients served is x + y + z. Again, since the nurses are able to serve an arbitrary number of patients, there are infinite combinations of x, y, and z that can add up to the total number of patients served. Therefore, there are infinite combinations for the number of patients served by the nurses in this case as well.
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There is a total of [tex]$84+112 = 196$[/tex] different combinations for the number of patients served by the nurses.
The possible scenarios for the number of patients served by the nurses:
If all four nurses are available and each serves one patient, then the remaining six patients can be distributed among the four nurses in any way.
This can be done in [tex]${{6+4-1}\choose{4-1}} = {{9}\choose{3}} = 84$[/tex] ways using stars and bars.
If one nurse is on a break, then three nurses serve one patient each and the remaining six patients can be distributed among the three nurses in any way. Let's examine the following situations to see how many patients the nurses may serve:
The remaining six patients can be divided whichever you choose among the four nurses if all four are available and each treat one patient.
A nurse is taking a break, the other three nurses take turns caring for one patient apiece while dividing the remaining six patients anyway they see fit.
The four nurses may be taking a break, we increase this by 4, giving us [tex]$4[/tex] times 28 to equal 112 possible combinations.
This can be done in [tex]${{6+3-1}\choose{3-1}} = {{8}\choose{2}} = 28$[/tex] ways using stars and bars.
The four nurses could be on a break, we multiply this by 4 to get[tex]$4 \times 28 = 112$[/tex]ways.
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Explain why the degree of the term 5y^3 is 3 and the degree of the polynomial 2y+y+2y is 1
Answer:
variable y of 5y³ is raised to 3 thus, its degree is 3 and variable y of 2y+y+2y is raised to 1, thus its degree is 1.
How are tides caused by the gravitational pull of the moon and sun?
Why does the moon have a greater effect on Earth's tides than does the sun?
The Moon and Sun's gravitational pull on the waters of Earth is what causes tides.
What is gravitational pull?The Moon and Sun's gravitational pull on the waters of Earth is what causes tides. The gravitational pull between any two objects is determined by both their masses and their separation from one another. Although having a far larger mass than the Moon, the Sun is located much distant from Earth. This indicates that the Moon's gravitational pull on the oceans of Earth is greater than that of the Sun.
The water on the side of the Earth that faces the Moon is drawn towards it by the Moon's gravitational attraction, creating a high tide. Another high tide results from simultaneous pulls on the opposite side of the Earth's water towards the Moon.
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The moon has a greater effect on Earth's tides than the sun because it is much closer to Earth.
What are gravitational pull?Gravitational pull is the force by which a planet or other body draws objects toward its center. The force of gravity keeps all of the planets in orbit around the sun. It also keeps the moon in orbit around Earth.
The Moon and Earth exert a gravitational pull on each other. On Earth, the Moon's gravitational pull causes the oceans to bulge out on both the side closest to the Moon and the side farthest from the Moon. These bulges create high tides. The low points are where low tides occur.
The moon has a greater effect on Earth's tides than the sun because it is much closer to Earth. The gravitational force between two objects decreases as the distance between them increases, so the moon's gravitational pull on Earth's oceans is much stronger than the sun's. However, during certain times of the year, when the sun and moon are aligned, their combined gravitational pull can create especially high or low tides, known as spring tides.
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Solving systems by eliminations; finding the coeficients
please write all the problems down, 10 points for each problem, and Brainliest
Answer:
(-7, 2)
Step-by-step explanation: (see attachment for work)
Multiply the second equation by -4 to eliminate the y. Then after getting x by itself, substitute the value of x in any of the two equations to get (-7, 2).
Help please i need assistance on this equation that I don’t understand quite well
Answer:
3 1/5
Step-by-step explanation:
The ratio of the lengths of the edges of two cubes is #. What is the ratio of their
surtace areas?
The ratio of their surface areas is x^2
What is the ratio of their surface areas?Let's assume that the lengths of the edges of the first cube are a, and the lengths of the edges of the second cube are bx, where b is a constant.
The surface area of a cube is given by the formula A = 6a^2, where a is the length of an edge.
Therefore, the surface area of the first cube is 6a^2 and the surface area of the second cube is 6(bx)^2 = 6b^2x^2.
The ratio of their surface areas is:
(6b^2x^2) / (6a^2) = b^2x^2 / a^2
Since the ratio of the lengths of the edges of the two cubes is x, we have:
a / bx = 1 / x
Solving for a, we get:
a = bx^2
Substituting this value into the ratio of their surface areas, we get:
(b^2x^2) / (bx^2)^2 = (b^2x^2) / b^2x^4 = x^2
Therefore, the ratio of the surface areas of the two cubes is x^2.
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p
Based on the table, which best predicts the end
behavior of the graph of f(x)?
O Asx
co, f(x), and as x, f(x),
O Asx co, f(x), and as x, f(x) 44,
O As x, f(x), and as x, f(x) -
-, and as x
9
Asx - co, f(x)
f(x), a
Based on the table, a relationship which best predicts the end behavior of the graph of f(x) include the following: C. as, x → ∞, f(x) → –∞, And as x → –∞, f(x) → ∞.
What is an odd function?In Mathematics and Geometry, a function f(x) is generally considered as an odd function if the following condition holds for all x-values (both positive x-values and negative x-values) in the domain of function f(x):
-f(x) = f(-x) - f (x) = f(-x)
This ultimately implies that, the larger the x-values or independent values (domain) is, the smaller would be the y-values or output values (range). On the other hand (conversely), the smaller the x-values or independent values (domain) is, the larger would be the y-values or output values (range);
x → ∞, f(x) → –∞, And as x → –∞, f(x) → ∞.
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Suppose money grows according to the simple interest accumulation function a(t) = 1. 05t. How much money would you need to invest at time 3 in order to have $3,200 at time 8?
$2,560 needs to be invested at time 3 in order to have $3,200 at time 8.
Since the money grows according to the simple interest accumulation function a(t) = 1.05t, the amount of money A at time t, given an initial amount P, can be calculated using the formula:
A = P + Pr(t)
where r is the interest rate (in this case, 5% or 0.05) and t is the time period (measured in years).
To determine how much money needs to be invested at time 3 to have $3,200 at time 8, we can use the above formula and solve for P:
3200 = P + Pr(8-3)
3200 = P + 5P(0.05)
3200 = P + 0.25P
3200 = 1.25P
P = 3200 / 1.25
P = 2560
Therefore, an initial investment of $2,560 at time 3 would be needed to have $3,200 at time 8, assuming a simple interest accumulation function with an interest rate of 5%.
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the probability model for the number of heads observed when you flip a coin 4 times is below. what is the probability of observing less than 3 heads?
The probability of observing less than 3 heads is 0.6875 when you flip a coin four times.
Probability is a method that is used to find the number of events likely to occur. There are 3 types of probability which are Theoretical Probability, Experimental Probability, and Axiomatic Probability.
The formula used to find the probability is given as ;
P(E) = Number of Outcomes / Total Number of Outcomes.
We have to find the probability of observing less than 3 heads.
if the coin is tossed four times then the total number of outcomes is 16
Let X be the number of heads observed in 4 tosses of a coin, Then
the probability of getting x heads in 4 flips is P ( X = x )
The probability of observing less than 3 heads is expressed as,
P ( X < 3 ).
P(X < 3) = P(X = 0) + P(X = 1) + P(X = 2)
= 1/16 + 4/16 + 6/16
= 11/16
= 0.6875
Therefore, the probability of observing less than 3 heads is 0.6875.
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Calculate the lengths of the 2 unlabeled sides.
Leave your answer in exact form.
Answer:
BC=4
AC=[tex]4\sqrt{2}[/tex]
the amount of medication in rory's bloodstream decreases at a rate that is proportional at any time to the amount of the medication in the bloodstream at that time. rory takes 150 150150 milligrams of medication initially. the amount of medication is halved every 13 1313 hours. how many milligrams of the medication are in rory's bloodstream after 8 88 hours?
After 8 hours, there are approximately 76.052 milligrams of medication remaining in Rory's bloodstream.
To solve this problem, we can use the concept of exponential decay, where the amount of medication decreases at a constant rate proportional to the amount present at that time.
Given that the medication is halved every 13 hours, we can determine the decay constant (k) using the formula:
k = ln(0.5) / 13
where ln represents the natural logarithm.
Now, let's calculate the decay constant:
k = ln(0.5) / 13
≈ -0.05314 (rounded to five decimal places)
The equation representing the amount of medication (M) in Rory's bloodstream at any given time (t) is:
[tex]M(t) = M_o \times e^{(kt)[/tex]
where M₀ is the initial amount of medication (150 milligrams).
After 8 hours (t = 8), we can calculate the amount of medication remaining in Rory's bloodstream:
[tex]M(8) = 150 \times e^{(-0.05314 \times 8)[/tex]
M(8) ≈ 76.052 milligrams (rounded to three decimal places)
Therefore, after 8 hours, there are approximately 76.052 milligrams of medication remaining in Rory's bloodstream.
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If you have a 19 out of 30 what would be the percentage?
Answer:
63.3%
Step-by-step explanation:
30 divided by 100 and then multiplied by 19 gives u the answer
Find the value of x.
85% (4x + 21)°
x = [?]°
Answer:
x = 16
Step-by-step explanation:
The Gabrielsons ran a family relay race. The distance run by each family member (in kilometers) is listed below.
11
,
4
,
8
,
2
,
5
11,4,8,2,5
The Gabrielsons ran a total of 30 kilometers in the family relay race.
What is the equivalent expression?
Equivalent expressions are expressions that perform the same function despite their appearance. If two algebraic expressions are equivalent, they have the same value when we use the same variable value.
It seems that there are five family members who participated in the relay race, and the distance run by each of them in kilometers is listed as follows:
11, 4, 8, 2, 5
To find the total distance run by the family, we simply add up the distances:
11 + 4 + 8 + 2 + 5 = 30
Therefore, the Gabrielsons ran a total of 30 kilometers in the family relay race.
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Lesson 15.3 Tangents and Circumscribed Angles
Proof of Circumscribed Angle Theorem
Given: ZAXB is a circumscribed angle of circle C.
Prove: ZAXB and ZACB are supplementary.
Complete the proof.
X
A
B
C
If ZAXB is a circumscribed angle of circle C, XA and XB are
Student Home No
ConnectED
Angle ACB = 180 degrees - angle ADC . AXB and angle ACB are supplementary
What are supplementary angles with example?
Supplementary angles are angles whose sum is 180 degrees. For example, an angle of 130° and an angle of 50° are supplementary angles, because the sum of 130° and 50° is 180°. Similarly, complementary angles add up to 90 degrees.
To show that angle AXB and angle ACB are supplementary, we must show that their sum is 180 degrees.
First, we can use the fact that angle AXB is a circumscribed angle of circle C to say that XA and XB are the ears of the circle that intersect at B. Let O be the center of circle C. Then, by the inscribed angle theorem, we get:
angle AOB = 2 * angle AXB
Similarly, we can say that AC is a chord of a circle that intersects XB at D. Then, using the inscribed angle theorem again, we get:
angle AOC = 2 * angle ADC
Since the angles AOB and AOC are both subtended by the arc AC, they are equal. Therefore, we can equate the expressions AOB and AOC:
2 * angle AXB = 2 * angle ADC
Simplifying this expression, we get:
angle AXB = angle ADC
Now we can use this fact to show that angle AXB and angle ACB are supplementary. Since the angles AXB and ADC are opposite angles of the cyclic quadrilateral AXDC, we know that they add up to 180 degrees:
angle AXB + angle ADC = 180 degrees
Replacing angle AXB with angle ACB (since they are equal), we get:
angle ACB + angle ADC = 180 degrees
In the reorganization, we have:
angle ACB = 180 degrees - angle ADC
So angle ACB and angle ADC are also supplementary. Therefore, we have shown that angle AXB and angle ACB are supplementary by necessity.
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a researcher wishes to conduct a study of the color preferences of new car buyers. suppose that 60% of this population prefers the color green. if 15 buyers are randomly selected, what is the probability that at most a fifth of the buyers would prefer green? round your answer to four decimal places.
The probability that at most a fifth of the buyers would prefer green is approximately 0.0198
This problem can be solved by using the binomial distribution. Let X be the number of buyers out of 15 who prefer green. Then X follows a binomial distribution with parameters n = 15 and p = 0.6.
We want to find the probability that at most a fifth of the buyers would prefer green. This means we want to find P(X ≤ 3), since a fifth of 15 is 3.
Using the binomial probability formula, we have
P(X ≤ 3) = Σ P(X = k) for k = 0 to 3
= P(X = 0) + P(X = 1) + P(X = 2) + P(X = 3)
= (15 choose 0) (0.6)⁰ (0.4)¹⁵ + (15 choose 1) (0.6)¹(0.4)¹⁴ + (15 choose 2) (0.6)² (0.4)¹³ + (15 choose 3) (0.6)³ (0.4)¹²
= 0.0000265 + 0.000397 + 0.00312 + 0.0163
Add the number
= 0.0198
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Ratio of 2:3:30 in 385
The ratio of 2:3:30 in 385 can be expressed with the values 22:33:330 repectively.
How can the ratio can be gotten?To find the actual values represented by the ratio 2:3:30 in 385, we need to first add up the parts of the ratio: 2 + 3 + 30 = 35.
Next, we can find the value of each "part" of the ratio by dividing the total value (385) by the total number of parts (35):
385 ÷ 35 = 11
Now we can multiply each part of the ratio by this value to find the actual values:
2 x 11 = 22
3 x 11 = 33
30 x 11 = 330
So the ratio 2:3:30 in 385 represents the values 22:33:330.
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cars arrive randomly at a tollbooth at a rate of 25 cars per 11 minutes during rush hour. what is the probability that exactly five cars will arrive over a five-minute interval during rush hour?
Therefore, the probability of exactly 5 cars arriving over a 5-minute interval during rush hour is approximately 0.017 or 1.7%.
To solve this problem, we first need to determine the rate of cars arriving per minute. We can do this by dividing 25 cars by 11 minutes, which gives us a rate of approximately 2.27 cars per minute.
Next, we need to use the Poisson distribution formula to calculate the probability of exactly 5 cars arriving over a 5-minute interval. The Poisson distribution is used to model the probability of a certain number of events occurring within a given time frame when those events occur randomly and independently of each other.
The formula for the Poisson distribution is:
[tex]P(X = k) = (e^-lambda * lambda^k) / k![/tex]
Where:
- P(X = k) is the probability of k events occurring within the specified time frame
- e is Euler's number (approximately equal to 2.718)
- λ is the average rate of events occurring per unit of time (in our case, 2.27 cars per minute)
- k is the number of events we want to calculate the probability for
- k! is the factorial of k (i.e., k! = k * (k-1) * (k-2) * ... * 2 * 1)
Plugging in the values we have, we get:
[tex]P(X = 5) = (e^-2.27 * 2.27^5) / 5![/tex]
P(X = 5) = (0.040 * 51.84) / 120
P(X = 5) = 0.017
Therefore, the probability of exactly 5 cars arriving over a 5-minute interval during rush hour is approximately 0.017 or 1.7%.
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The probability that exactly five cars will arrive over a 5-minute interval during rush hour is approximately 0.0126 or 1.26%.
To solve this problem, we will use the Poisson distribution formula.
Calculate the average arrival rate (λ) for a 5-minute interval.
Since 25 cars arrive in 11 minutes, we can find the rate per minute as follows:
(25 cars) / (11 minutes) ≈ 2.27 cars per minute
For a 5-minute interval, multiply the rate per minute by 5:
(2.27 cars per minute) × (5 minutes) ≈ 11.36 cars.
Use the Poisson distribution formula to find the probability.
The Poisson distribution formula is:
[tex]P(x) = (e^{-\lambda} * (\lambda^x)) / x![/tex]
In this problem, x = 5 (exactly five cars) and λ ≈ 11.36.
Calculate the probability.
P(5) = (e^(-11.36) × (11.36^5)) / 5!
P(5) ≈ 0.0126.
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5 out of 7 questions. PLEASE help me.
Answer:
5 units is the distance
Step-by-step explanation:
7,2 is point c
7,7 is point d
7 - 7 = 0
7 - 2 = 5
5 is the answer
Write the coordinates of the vertices after a dilation with a scale factor of 1/4, centered at the origin.
Answer:
E'(-2, 2)F'(0, 0)G'(-2, -2)Step-by-step explanation:
You want the coordinates of the vertices of ∆E'F'G' after ∆EFG has been dilated with a scale factor of 1/4.
DilationDilation about the origin multiplies each preimage coordinate by the scale factor.
E' = (1/4)E = (1/4)(-8, 8) = (-2, 2)
F' = (1/4)F = (1/4)(0, 0) = (0, 0)
G' = (1/4)G = (1/4)(-8, -8) = (-2, -2)
The coordinates after dilation are E'(-2, 2), F'(0, 0), G'(-2, -2).
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Olivia rides her scooter 34
mile in 13
hour. What constant of proportionality relates the distance she travels to the time?
The proportionality constant that relates the distance traveled by Olivia to time is 34/13, or approximately 2.615.
The constant of proportionality is related to the distance Olivia travels and the time it takes to travel that distance. You can find it by dividing the distance by the time.
constant of proportionality = distance / time = 34 miles / 13 hours
This division can be simplified by partitioning both the numerator and denominator by their most prominent common divisor, 1.
constant of proportionality = 34/13
Therefore, the proportionality constant that relates the distance traveled by Olivia to time is 34/13, or approximately 2.615 (rounded to three decimal places).
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assume that the failure strength of a beam can be represented by a normal distribution where the population standard deviation is 4 psi. if you need the width of the 95% confidence interval to be 3 psi, how large of a sample do you need?
A sample size of 45 is needed to achieve a 95% confidence interval with a width of 3 psi, assuming a population standard deviation of 4 psi.
We must apply the following formula to get the sample size required to obtain the desired width of the confidence interval:
n = (z * σ / E)²
n is the sample size, σ is the population standard deviation of the data, E is the margin of error, z is the intended degree of confidence.
Inputting the values provided yields:
n = (1.96 * 4 / 1.5)²
n = 44.23
So, we need a sample size of 45 to get a confidence level of 95%.
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Average movie prices in the United States are, in general, lower than in other countries. It would cost $78.40 to buy three tickets in Japan plus two tickets in Switzerland. Three tickets in Switzerland plus two tickets in Japan would cost $74.05. How much does an average movie ticket cost in each of these countries?
Solving the equations we get the average cost of movie tickets for Japan is $17.42 and Switzerland is $13.07.
What is equation?
An equation is a mathematical statement which is made by two expressions connected by an equal sign. For example, 3x – 8 = 16 is an equation. Solving this equation, we get the value of the variable x as x = 8.
Let, the cost for 1 movie ticket in Japan = $x
the cost for 1 movie ticket in Switzerland = $y
It would cost $78.40 to buy three tickets in Japan plus two tickets in Switzerland.
So the first equation will be,
3x+2y= 78.40 ------------(1)
Three tickets in Switzerland plus two tickets in Japan would cost $74.05
From this the 2nd equation will be,
2x+3y= 74.05 --------------(2)
Multiplying equation (1) by 2 and multiplying equation (2) by 3 we get,
6x+4y= 156.8 --------------(3)
6x+9y= 222.15 ------------(4)
equation (4)- (3) gives,
5y= 65.35
y= 13.07
putting this value in equation (1) we get,
x= (78.40- 2× 13.07)/ 3
= 17.42
Hence, the average cost of movie tickets for Japan is $17.42 and Switzerland is $13.07.
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