The y-intercept of the function y = 3.5x - 7 is ( 0, - 7 ).
A function is an association between inputs in which each input has a unique link to one or more outputs. Each function has a range, codomain, and domain.
Consider the function,
y = 3.5x - 7
The equation of a straight line is expressed in the slope-intercept form (a linear function). It takes the formula y = mx + b, where m is the slope, b is the y-intercept, and y and x serve as variables.
The value of y at x = 0 can be used to determine the y-intercept. The graph's intersection with the y-axis occurs at this location.
Then,
y = 3.5x - 7
y = 3.5( 0 ) - 7
y = - 7
The y-intercept of the function is ( 0, - 7).
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In an examination, Sarah obtained 87.5% by gaining 105 marks. How
many marks did she lose?
Answer: 14
Step-by-step explanation:
87.5% of 105 is 91.875 (91)
105-91=14
considering the function for what values of x is f constant Options: (negative infinity,10]never(10,15)[15, infinity)
So, as shown at the function
f(x) is constant at the middle interval (10 , 15)
at which f(x) = 2 and the digit 2 is constant
so, the answer is (10 , 15)
Hi thank you so for all your time and help
Hello there. To solve this question, we'll have to remember some properties about trigonometric functions and the right triangle.
We want to find x such that:
[tex]\tan (x)=\sqrt[]{3}[/tex]We'll use the second right triangle to show what we want.
First, given a triangle:
We know that the hypotenuse will be:
[tex]\sqrt[]{x^2+y^2}[/tex]But most importantly, the tangent of the angles α and β can be calculated by only using the legs of the triangle: it is the ratio between the opposite side and the adjacent side to an angle.
[tex]\tan (\alpha)=\frac{y}{x}[/tex]and
[tex]\tan (\beta)=\frac{x}{y}[/tex]Now look at the triangle we have:
We can easily check that:
[tex]\sqrt[]{3}=\frac{\sqrt[]{3}}{1}[/tex]So it would be good to find something that relates the ratio between those two numbers: the tangent of 60º!!
Therefore, we have:
[tex]\tan (60^{\circ})=\frac{\sqrt[]{3}}{1}=\sqrt[]{3}[/tex]And the solution to x is:
[tex]x=60^{\circ}[/tex]please help!!!!
Submit a picture of your work :
Prove: All right angles are congruent. Use the definition of a right angle and the definition of congruent angles to prove
All right angles are congruent which is determined by the definitions of a right angle and congruent angles.
What are congruent angles?Congruent angles are two or more angles that are identical to each other. As a result, the measurements of these angles are equivalent.
Given that ∠1 and ∠2 are right angles.
By the definition of right angles i.e. right angle is one that is exactly 90 degrees. It is precisely one-quarter of a circle. When a pie is divided into four equal pieces, the tip of each slice forms a straight angle.
⇒ m ∠1 =90° ; m ∠2 = 90°
By the substitution to get
⇒ m ∠1 = m ∠2
Therefore, ∠1 ≅ ∠2
Hence, all right angles are congruent which is determined by the definitions of a right angle and congruent angles.
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the quotient of 21 and a equals 30
The resulting value for the quotient of 21 and a equals 30 is 7/10.
Quotient of two numbersThe result of dividing two numbers is known as the quotient. Six divided by two results in the number three.
Latin's "how many times" is the meaning of the word "quotient." That is really logical. For instance, the quotient of a and b is a/b
Given the statement "the quotient of 21 and a equals 30", this can be written mathematically as;
21/a = 30
Cross multiply
30a = 21
Divide both sides by 30
30a/30 = 21/30
a = 21/30
a = 7/10
Hence the value of a from the equivalent expression is 7/10.
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which of the following graphs could be the graph of g (x)= (x+1) (x-2) (x+5)
D
1) Taking the function g(x)= (x+1) (x-2) (x+5), as we can see this a 3rd degree ploynomial
g (x)= (x+1) (x-2) (x+5)
g(x) =x³+4x²-7x-10
As the coefficient is positive, then we'll have
Examining the options, we have as the roots S={-5,-1,2} So the answer is D
a bicycle path and a road cross at right angles. a police woman stands on the road 70 meters south of the crossing and watches an eastbound cyclist traveling at 6 meters per second. at how many meters per second is the cyclist moving away from the police woman 4 seconds after passing the intersection?
The Pythagorean Theorem states that the squares on the hypotenuse of a right triangle, or, in standard algebraic notation, a² + b² = c².
What is meant by Pythagorean Theorem?The Pythagorean Theorem states that the squares on the hypotenuse (the side across from the right angle) of a right triangle, or, in standard algebraic notation, a² + b² = c².
The Pythagorean theorem, sometimes known as Pythagoras' theorem, is a fundamental relationship between a right triangle's three sides in Euclidean geometry. According to this statement, the areas of the squares on the other two sides add up to the size of the square whose side is the hypotenuse.
First use the Pythagorean theorem. a² + b² = c²
then take the first derivative of it to get
2a(a') + 2b(b') = 2c(c')
Now figure out how far the train is after 4 seconds
6(4)=24
70² + 24² = c²
c = 74
Now plug in the variables you know
2(70)0 + 2(24)6 = 2(74)c' and solve for c' or the rate of change of c.
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What is the equation of the line that passes through the point (−6,−3) and has a slope of 0?
The equation of the line that passes through the point (-6,-3) and has a slope of 0 is y = -3
The line is passing through the point = (-6,-3)
The slope of the line = 0
The point slope form is
[tex](y-y_1)=m(x-x_1)[/tex]
Substitute the values in the equation
(y-(-3)) = 0×(x-(-6))
We have to convert this equation the slope intercept form
Slope intercept form is
y = mx + b
Where m is the slope of the line
b is the y intercept
(y-(-3)) = 0×(x-(-6))
y+3 = 0×(x+6)
y+3 = 0
y = -3
Hence, the equation of the line that passes through the point (-6,-3) and has a slope of 0 is y = -3.
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PLEASE HURRY
Which table represents a linear function?
The table that represents a linear function is Table 1. Thus, the correct option is A.
What is a linear equation?A linear equation is an equation in which each term has at max one degree. Linear equation in variable x and y can be written in the form y = mx + c.
Linear equation with two variables, when graphed on a cartesian plane with axes of those variables, give a straight line.
We know that, slope m= (y2-y1)/(x2-x1)
Table 1:
Put (x1, y1)=(1, 5) and (x2, y2)=(2, 9) in slope formula
That is, (9-5)/(2-1)
= 4
Similarly, the slope between last two points is (9-5)/(4-1)
=4
Table 2:
Put (x1, y1)=(1, -5) and (x2, y2)=(2, 10) in slope formula
That is, (10+5)/(2-1)
= 15
Similarly, slope between last two points (20+15)/(4-3)
=35
Hence, the table that represents a linear function is Table 1. Thus, the correct option is A.
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there are 324 students in a college who have taken a course in calculus, 211 who have take a course in discrete mathematics, and 135 who have taken a course in both calculus and discrete mathematics. how many students at this college have taken a course in either calculus or discrete mathematics?
265 students at this college have taken a course in either calculus or discrete mathematics.
Let X = number of students who have taken a course in calculus
Y = number of students who have taken a course in discrete mathematics
To determine the number of students who have taken a course in calculus only, subtract 135 from 324.
Only X = X - X∩Y
Only X = 324 - 135
Only X = 189
To determine the number of students who have taken a course in discrete mathematics only, subtract 135 from 211.
Only Y = Y - X∩Y
Only Y = 211 - 135
Only Y = 76
To determine the number of students who have taken a course in either calculus or discrete mathematics, add 189 and 76.
either X or Y = only X + only Y
either X or Y = 189 + 76
either X or Y = 265
To better illustrate the X and Y, see the attached photo of the Venn Diagram.
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Ellen renovates the foyer of an old farmhouse. The foyer is 15 feet long and 8 feetwide. Calculate the area of the foyer.foyer60 square feet46 square feet120 square feet23 square feet240 square feet
Data
Length = 15 ft
Width = 8 ft
Area
How many ways can four guests sit in a row of six chairs so that the leftmost chair is used and the rightmost chair is empty?
Answer:96
Step-by-step explanation: Answer is 96 because you can do 16 times 3 which is 48 so for the fifth seat to the end will be 96 ways.
Hope this helps! :)
Rectangle A measures 12 cm by 3 cm.Rectangle B is a scaled copy of rectangle A.Select all the measurement pairs that could be the dimensions of rectangle B.
The measurement pairs that could be the dimensions of rectangle B include:
A. 6cm by 1.5cm
D. 18cm by 4.5vm
F. 80cm by 20cm
How to illustrate the information?From the information, Rectangle A measures 12 cm by 3cm. Therefore, it should be noted that the scale factor is:
= 12/3
= 4/1
Therefore, the options should also have that same constant of 4:1
In this case, 6cm by 1.5cm, 18cm by 4.5cm, and 80cm by 20cm all possess this. This illustrates the concept of equivalent dimensions since they all have a ratio of 4:1.
The complete question is written below.
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Rectangle A measures 12 cm by 3 cm. Rectangle B is a scaled copy of Rectangle A. Select all of the measurement pairs that could be the dimensions of Rectangle B.
A. 6 cm by 1.5 cm
B.10 cm by 2 cm
C. 13 cm by 4 cm
D.18 cm by 4.5 cm
E.80 cm by 20 cm
HELP ME FIND X AND Y
<EOG =90° AS INDICATED IN THE DIAGRAM
<EOF+<FOG=<EOG(THEY MAKE THE ANGLE)
[tex]27 + 3y = 90 \\ 3y = 90 - 27 \\ 3y = 63 \\ \frac{3y}{3} = \frac{63}{3} \\ y= 21[/tex]
<AOB =180°( STRAIGHT LINE )
<AOE+EOF+<FOG+<GOB=<AOB(THWY MAKE THE ANGLE)
[tex]x + 27 + 3(21) + 8x + 18 = 180[/tex]
[tex]x + 27 + 63 + 8x + 18 = 180 \\ x + 8x + 27 + 63 + 18 = 180 \\ 9x - + 108 = 180 \\ 9x = 180 - 108 \\ 9x =72 \\ \frac{9x}{9} = \frac{72}{8} \\ x = 9[/tex]
ATTACHED IS THE SOLUTION
Subtract and simplify:
PLEEEEASE HEEEEELP ASAP
8 1/2 − 5 2/3 = _____
Responses
A 16/6
B 3 1/3
C 2 5/6
D 3 1/6
Answer:
C
Step-by-step explanation:
8.5 - 5.6666= 2.83
Answer:
C. 2 5/6
Step-by-step explanation:
8 1/2 - 5 2/3 1. convert mixed numbers into an improper fraction
17/2 - 17/3 2. convert fractions into 2 numbers that can be subtracted
51/6 - 34/6 3. subtract
17/6 4. convert to mixed number
2 5/6
explain why the solution to the equation |x-2|-1=x+3 is 1
[tex]|x-2|-1=x+3\rightarrow|1-2|-1=1+3\rightarrow1-1=4\rightarrow0=4[/tex]
Rewrite in exponential form: \log _3x=4
Answer:
x = 3⁴
Step-by-step explanation:
You want the exponential form of log₃(x) = 4.
LogarithmIt can be helpful to remember that a logarithm is an exponent of the base of the logarithm.
log₃(x) = 4 ⇔ x = 3⁴
The exponential form is x = 3⁴.
find x and y intercepts of x+4y=8
Answer: You could assume that X=8 and y=0
Step-by-step explanation:
Answer:
Solutions below.
Step-by-step explanation:
This Question involves the concept of intercepts of a graph.
InterceptsIntercepts of a graph are namely the x-intercept and y-intercept.
x-intercept is when y = 0. Example: (3,0)
y-intercept is when x = 0. Example: (0,9)
ApplicationWe are given the equation: x + 4y = 8
To find x-intercept, we can substitute y = 0 into the equation to obtain the value of x.
x + 4(0) = 8
x + 0 = 8
x = 8
Coordinates: (8, 0)
To fins y-intercept, we can substitute x = 0 into the equation to obtain the value of y.
0 + 4y = 8
4y = 8
y = 8 ÷ 4
y = 2
Coordinates: (0, 2)
i cn T FING THIS HELPPPPPPPP
The equation which describes Riya's graph is:
a). C(t) = -3t + 24.
We can easily find out the equation by concentrating on the axes.
For example,
Just look from the graph the value of C when t = 0.
We can conclude that C should be equal to 24 when t is equal to 0.
Now, let us put this value of t ( which is 0) in the equations one by one:
a). C(t) = -3t + 24
=> C(0) = -3 (0) + 24
=> C(0) = 24.
So, equation a). satisfies the given criteria.
Similarly, b) also qualifies but c) and d) are not equal to 24 when t = 0.
So, remove them.
Now, let's look at the value of t when C=0.
We can see that t should be equal to 8.
Let's put this value in equations,
a). 0 = -3t + 24
=> 3t = 24
=> t = 8.
Now, we can see that equation a). satisfies all the given conditions for the graph.
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Hello can you help me on my 7th grade math worksheet show all work
ANSWER:
78.5 ft
STEP-BY-STEP EXPLANATION:
One trip equals the circumference of the circle.
The circumference of a circle is calculated by means of the following formula:
[tex]\begin{gathered} c=\pi\cdot d \\ \\ d=\text{ diameter = 25 ft} \end{gathered}[/tex]Therefore, we substitute and calculate the distance the pony would walk for a trip:
[tex]\begin{gathered} c=(3.14)(25) \\ \\ c=78.5\text{ ft} \end{gathered}[/tex]That is, the number of feet the pony walks is 78.5
In one of its Spring catalogs , Bean advertised footwear on 29 of its 192 catalog pages. Suppose we randomly survey 20 pages. We are interested in the number of pages that advertise footwear. Each page may be picked at most once.
A. In words, define the random variable X.
B. List the values that X may take on.
C. How many pages do you expect to advertise footwear on them ?
D. Calculate the standard deviation .
A) The random variable X is The number of pages that advertise footwear
B) X = 1, 2, 3.....20
C) On average 3.02 pages expect to advertise footwear on them
Bean advertised footwear on 29 of its 192 catalog pages.
we randomly survey 20 pages
the random variable X is
X = The number of pages that advertise footwear
It is given that 20 pages have been surveyed
so, X = 1, 2, 3.....20
The average value for binomial distribution can be calculated as follows
μ = np
= 20 (29/192)
= 580/192
=3.02
On average 3.02 pages expect to advertise footwear on them
Therefore, A) The random variable X is The number of pages that advertise footwear
B) X = 1, 2, 3.....20
C) On average 3.02 pages expect to advertise footwear on them
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what rule will correctly describe the sequence
2,5,10,17,26,37
Answer:
The rule is. the nth term aₙ is given by
aₙ = n² + 1
Step-by-step explanation:
The following is the summary of n, aₙ
n aₙ In terms of n
1 2 1² + 1
2 5 2² + 1
3 10 3² + 1
4 17 4² + 1
5 26 5² + 1
6 37 6² + 1
So the nth term is given by
n² + 1
y=−3x+9
3y=−9x+9 how many solutions
The system of the linear equation y = −3x + 9 and 3y = −9x + 9 are parallel to each other and represent no solution. Then the number of the solution is zero.
What is the solution to the equation?The allocation of weights to the relevant variables that produce the calculation's equilibrium is referred to as a consequence.
A connection between two or more factors results in a linear model when displayed on a graph. The variable will have a degree of one.
The linear equations are given below.
y = -3x + 9 ...1
3y = -9x + 9 ...2
Divide the equation 2 by 3, then the equation will become.
y = -3x + 3
The slope of the lines is the same but the lines are separated by a distance.
The system of the linear equation y = −3x + 9 and 3y = −9x + 9 are parallel to each other and represent no solution. Then the number of the solution is zero.
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Write variable expressions: two operations
Write an expression for the sequence of operations described below.
multiply t by 5, then double the result
The expression for the sequence of operations is 2(t x 5).
Expression:
Expression consists of minimum of two terms containing numbers or variables, or both, connected by an operator in between.
Given,
Here we have the phrase "multiply t by 5, then double the result"
Now we have to written the algebraic expression for it.
For the given phrase, we have to divide it into two part,
The first part is "multiply t by 5",
So, it can be written as
=> 5 x t
Now, we have to move on to the next part that is,
"double the result".
For that, we have to multiply the first part by 2,
It can be written as,
=> 2 x ( 5 x t)
Therefore, the resulting expression is 2(5t).
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Please help me. Much Appreciated Each part of problem mark as either a, b, c
Given:
Total number of people surveyed = 205
a) Percentage of the survey respondents that do not like both hamburgers and burritos.
Number of people that do not like both = 54
To find the percentage of the respondents that do not like both, we have:
[tex]\begin{gathered} \text{ \% that do not like both = }\frac{Number\text{ that }do\text{ not like both}}{\text{Total surveyed}}\ast\frac{100}{1} \\ \\ \text{ \% that do not like both = }\frac{54}{205}\ast100\text{ = }26.3\text{ \%} \end{gathered}[/tex]Therefore, the percentage of the survey respondents that do not like both hamburgers and burritos is 26.3%
b) Marginal relative frequency of all customers that like hambugers.
Given:
Number of customers that like hamburgers = 110
To find the marginal relative frequency, we have:
[tex]M=\frac{110}{250}=0.54=54\text{ \%}[/tex]The marginal relative frequency of all customers that like hambugers is 54%
c) Conditional relative frequencies:
i) Conditional relative frequency that a person likes hamburgers given that the person does not like burritos:
[tex]\frac{110-29}{135}=\frac{81}{135}=0.6=60\text{ \%}[/tex]ii) Conditional relative frequency that a person likes burritos, given that the person does not like hamburgers:
[tex]\frac{41}{41+54}=\frac{41}{95}=0.43=43\text{ \%}[/tex]owen is the owner of the french realty company. he knows that the average number of homes sold per day is one. let x be the number of homes that french realty sells tomorrow. (a) (2 pts) what is the distribution of x and its parameter(s)? (b) (2 pts) what is the standard deviation of x ? (c) (2 pts) what is the probability that x is (inclusively) within one standard deviation of the mean of x
A) distribution of x and its parameter(s) is (λ^x e^-λ ) / x!
B) standard deviation of x is 1
C) probability that x is (inclusively) within one standard deviation of the mean of x is 0.7358
The term "standard deviation" (or "") refers to a measurement of the data's dispersion from the mean. A low standard deviation implies that the data are grouped around the mean, whereas a large standard deviation shows that the data are more dispersed.
The area of mathematics known as probability deals with numerical representations of the likelihood that an event will occur or that a statement is true. An event's probability is a number between 0 and 1, where, roughly speaking, 0 denotes the event's impossibility and 1 denotes certainty.
A) The poisson distribution with mean is followed by X = λ = 1
Therefore, ≈ (λ = 1)
Distribution of X is:
(λ^x e^-λ ) / x! , x = 0, 1, 2, 3 ......
B) Standard Deviation of X is :
σx = √x = 1
C) Probability of X = P (-1 ≤ x ≤ 1)
P(x = 0) + P(x = 1)
= (1⁰ e⁻¹) / 0! + 1¹ e-¹ / 1!
= 2e⁻¹
= 0.7358
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Given segments AB and CD intersect at E.
A(1, 2), B(4, 5), C(2, 4), D(2, 1), E(2, 3)
What is the midpoint of cd?
Answer: (2, 5/2)
Step-by-step explanation:
CD=(2, 4),(2, 1)
((2+2)/2, (4+1)/2)=
(4/2, 5/2)=(2, 5/2)
Find the value of x for which i II m?
Answer:
16. 36.67
17. 40
Step-by-step explanation:
See attached worksheet
pls help meeeee xxxxxxxxx
Tom has 13 new magazines to read. Let M be the number of magazines he would have left to Read after reading R of them. Write an equation relating to M to R. Then graph your equation using the axis below
The equation that relates M to R is M = 13 - R
How to determine the equation that relates M to R?From the question, we have the following parameters:
Total number of new magazines = 13Number of magazines read = RNumber of magazines left = MThe total number of new magazines is the sum of the number of magazines read and the number of magazines left
This is represented as
Total number of new magazines = Number of magazines read + Number of magazines left
Substitute the known values in the above equation
13 = R +M
Make M the subject
M = 13 - R
Hence, the equation is M = 13 - R
See attachment for the graph
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