The probability of that an incoming call to the service centre is 0.0219. And the probability that an incoming call is a request for purchasing more products is 0.135.
Probability of an event gives the possibility of an event which is never greater than 1 and the probability of impossible event is 0 and the probability of sure event is 1.
Probability = number of favourable cases/ total number of outcomes
a) The probability that an incoming call to the customer service = Probability of incoming calls to the service centre * probability of remaining number of calls in the centre = 0.73* 0.03 = 0.0219.
b) the probability that an incoming call is a request for purchasing more products = Probability of request of calls in the service centre * probability of request of purchase. = 0.5 * 0.27 = 0.135.
Hence, the probability that incoming call to the service is 0.0219 and of the request of purchase is 0.135.
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find the amount of rs 800000 for 2 years compounded annually and the rate being 9% during first year and 10% second year
Answer:
Amount = 800000×(1+0.09)2 = 800000×1.1881 = 946480
Amount = 800000×(1+0.1)2 = 800000×1.21 = 960000
Blocks that can be packed into a box that is 6 units tall, 7 units wide, and 8 units deep without exceeding the height of the box?
The greatest number of blocks that can be packed into a box that is 6 units tall, 7 units wide, and 8 units deep without exceeding the height of the box = 84
Let h represents the height, w represents the width and l represents the length of the box.
The box is 6 units tall, 7 units wide, and 8 units deep.
⇒ h = 6 units, w = 7 units and l = 8 units
The volume of the box would be,
V = l × w × h
V = 6 × 7 × 8
V = 336 cu. units
The four block has unit-cubes.
The volume of unit each unit cube would be, 1 × 1 × 1 = 1 cubic unit
so, the volume of 4 blocks would be,
V₁ = 4 × 1
V₁ = 4 cu. units
The number of blocks that can be placed in the box would be,
n = V / V₁
n = 336 / 4
n = 84
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The complete question is:
There is an ample supply of identical blocks (as shown). Each block is constructed from four 1 × 1 × 1 unit-cubes glued whole-face to whole-face. What is the greatest number of such blocks that can be packed into a box that is 6 units tall, 7 units wide, and 8 units deep without exceeding the height of the box?
Graham is hiking a trail that is 512 miles long. He has hiked 358 miles so far.
Which expression shows how many miles he has left to hike?
Answer:
512-358= how manyy miles left
Step-by-step explanation:
The expression that shows how many miles Graham has left to hike would be 512 - 358 = 154 miles.
shade exactly two of the nine smaller squares so that the resulting figure has a. only one vertical and one horizontal line of symmetry. b. only two lines of symmetry about the diagonals. c. only one horizontal line of symmetry. d. only one line of symmetry about a diagonal. e. no line of symmetry.
The attached figures(a., b., c., d., and e.) define the line of symmetry of the given options.
a) In order to have exactly one vertical and one horizontal line of symmetry, you can shade one square in the first row and one square in the centre column.
b) To have only two lines of symmetry about the diagonals, you can shade two squares that are diagonally opposite from each other.
c) To have only one horizontal line of symmetry, you can shade one square in the centre row.
d) To have only one line of symmetry about a diagonal, you can shade two squares that are on the same diagonal.
e) To have no line of symmetry, you can shade two squares that are not on the same row, column, or diagonal.
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--The given question is incomplete; the complete question is
"Use Figure 2 to answer the problem.
Shade exactly two of the nine smaller squares so that the resulting figure has
a. Only one vertical and one horizontal line of symmetry.
b. Only two lines of symmetry about the diagonals.
c. Only one horizontal line of symmetry.
d. Only one line of symmetry about a diagonal.
e. No line of symmetry."--
Which system of inequalities does (2,7) NOT satisfy?
● y ≥ 6x - 5
x + 2y ≤ 16
O y ≤ 6x-5
x + 2y ≥ 16
O x - 2y ≤-16
6x - y < 5
O у ≥ 6x - 5
X - 6y ≥ -54
Answer: (2,7) does not satisfy the system:
x - 2y ≤ -16
6x - y < 5
We can substitute the point (2,7) into the inequalities and see if they are true:
2 - 2*7 ≤ -16
-10 ≤ -16 which is false
6*2 - 7 < 5
5 < 5 which is also false
Since (2,7) does not satisfy both inequalities of the system, it is the correct answer.
Step-by-step explanation:
a longitudinal study is able to help resolve which of the following limitations of a traditional correlational study? a. whether there is a third, unmeasured variable causing both of the measured variables b. the direction of a possible causal relationship between the variables c. whether the sample size is sufficient to detect a relationship between variables d. whether the relationship between variables is statistically significant
A longitudinal study is a type of research method used to observe changes in a given behavior or condition of a group of individuals over a period of time.
It is especially useful in resolving the limitation of a traditional correlational study in that it can provide evidence for the direction of a possible causal relationship between the variables. This is because the study is conducted over a period of time, which allows for the observation of changes in the variables over time, and the ability to determine which variable is causing the changes in the other. This can be done through the use of statistical tests, such as regression analysis, which can measure the strength of the correlation and the direction of the relationship. Additionally, longitudinal studies can also help to determine whether the sample size is sufficient, as well as whether the relationship between the variables is statistically significant.
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suppose ax d b has a solution. explain why the solution is unique precisely when ax d 0 has only the trivial solution.
The solution of Ax = b is unique precisely when Ax = 0 has only the trivial solution, because Ax-b is consistent, its solution set is obtained by translating the solution set of Ax-0. So the solution set of Ax = b is a single vector if and only if the solution set of Ax 0 is a single vector, and that happens if and only if Ax 0 has only the trivial solution.
The correct answer is an option (b)
Let us assume that the equation Ax = b has a solution.
Now we need to show the solution is unique when Ax = 0 has only the trivial solution.
As we know Ax = 0 represents homogenous equation.
If Ax = b has a solution, it is unique if and only if every column of A is a pivot column. If every column of A is a pivot column, there are no free variables, and therefore the homogeneous equation has only the trivial solution.
Since Ax-b is consistent, its solution set is obtained by translating the solution set of Ax=0. So the solution set of Ax = b is a single vector if and only if the solution set of Ax= 0 is a single vector, and that happens if and only if Ax 0 has only the trivial solution.
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The complete question is:
Suppose Ax = b has a solution. Explain why the solution is unique precisely when Ax = 0 has only the trivial solution. Choose the correct answer.
A. Since Ax = b is inconsistent, its solution set is obtained by translating the solution set of Ax-0. For Ax-b to be inconsistent, Ax = 0 has only the trivial solution.
B. Since Ax-b is consistent, its solution set is obtained by translating the solution set of Ax-0. So the solution set of Ax = b is a single vector if and only if the solution set of Ax 0 is a single vector, and that happens if and only if Ax 0 has only the trivial solution.
C. Since Ax = b is inconsistent, then the solution set of Ax = 0 is also inconsistent. The solution set of Ax = 0 is inconsistent if and only if Ax = 0 has only the trivial solution.
D. Since Ax = b is consistent, then the solution is unique if and only if there is at least one free variable in the corresponding system of equations. This happens if and only if the equation Ax 0 has only the trivial solution.
true or false: the residuals from a linear regression analysis on any possible dataset (with more than 1 observation) will add up to 0.
The statement is False. The residuals will not necessarily add up to 0.
The residuals from a linear regression analysis are the differences between the observed values of the dependent variable and the predicted values of the dependent variable. Therefore, the sum of the residuals will depend on the data and the model used. If the model is a perfect fit, then the sum of the residuals will be 0. However, in most cases, the model will not be a perfect fit and the sum of the residuals will not be 0. Therefore, it is not true that the residuals from a linear regression analysis on any possible dataset (with more than 1 observation) will add up to 0.
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A counter in Reagan's kitchen is 1 meter wide and 3 meters long. Reagan wants to replace the counter with a granite countertop, which would cost $185.00 per square meter. How much would the granite countertop cost?
The granite countertop costs $555
How much would the granite countertop cost?From the question, we have the following parameters that can be used in our computation:
Length = 3 meters
Width = 1 meter
Cost per square meter = $185.00
The cost of the granite counter is then calculated as
Cost = Length * width * Cost per square meter
substitute the known values in the above equation, so, we have the following representation
cost = 3 * 1 * 185
Evaluate
cost = 555
hence, the cost is $555
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if a lawyer charges $120 an hour (or any fraction of an hour), how much is a bill for 3 hours and 20 minutes? what is the equation for this problem?
Answer: If a lawyer charges $120 an hour (or any fraction of an hour), how much is a bill for 3 hours and 20 minutes? What is the equation for this problem? answer choices l (x) = 120x l (x) = 120 [x-1] l (x) = 120 [x] l (x) = 120 [x+1]
Thank me later.
What is the value of x? x =
24
7
X
Answer:
x = 25
Step-by-step explanation:
Following the Pythagoras' Theorem,
a² + b² = c²
24² + 7² = c²
c² = 625
∴ c = 25
In this case, since the length of the hypotenuse is x cm, ∴ c = x.
∴ x = 25
Answer:
25
Step-by-step explanation:
According to Pythagoras theorem,
H²=P²+B²
(H-hypotenuse, P-perpendicular, B-Base)
X²=24²+7²
X²=576+49
X²=625
X²=25²
X=25
help me please i need your help
Answer:
∞
Step-by-step explanation:
I don’t know just think it out. That is the explaination
can someone help me do #1 please
Answer:
All parts are below
Step-by-step explanation:
Seeing the first part asking for f(1). The equation f(n) lies above, so right here is plug and play. Since the n was replaced with a 1, we'll go to the table and find n and find 1.
Since it's the first number, looking directly below it is 7. Meaning f(1) = 7
Seeing common ratio... everytime n goes up 1, the value doubles, making r = 2/1 also known as 2
Now that we know f(1) is 7 and r is 2, we can plug it all in
f(n) = f(1) * (r)^n-1
Plugged in, it's f(n) = 7 * 2^1-1. 1-1 = 0. Anything to the power of 0 equals 1, which means 2^0 is 1
Multiplying 7 and 1 gives you 7, so
f(n) = 7
Geometric sequence is that f(n) = f(1) * (r)^n-1
Also known as f(n) = 7 * 2^n-1
For problem #2, try replicating all this and let me know how it goes
the police chief in a local city claims that the average speed for cars and trucks on a stretch of road is at least 45 mph. if this claim is to be tested, the null and alternative hypotheses are:
The population mean speed for automobiles and trucks on the length of road is equal to or less than 45 mph, which is the null hypothesis (H0) for this claim. This can be expressed mathematically as H0: = 45 mph.
where the population's average speed is represented by.
For this claim, the alternative hypothesis (H1) would be that the average population speed for vehicles and trucks on that section of road is higher than 45 mph. This can be expressed mathematically as H1: > 45 mph.
A random sample of cars and trucks would be chosen in order to test the assertion, and their speeds would be recorded. The probability of detecting the sample mean speed under the null hypothesis would then be calculated using a statistical test like the t-test.
Therefore, the alternative hypothesis is that the population mean speed for vehicles and trucks on the length of road is more than 45 mph, whereas the null hypothesis is that it is equal to or less than 45 mph.
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The null hypothesis (H0) for this statement is that the population mean speed for cars and trucks on the length of the road is equal to or less than 45 mph. H0: = 45 mph is a mathematical expression for this.
where is the average speed of the population.
The alternative hypothesis (H1) for this assertion is that the typical population speed for cars and trucks on that stretch of road is greater than 45 mph. Mathematically, this is represented as H1: > 45 mph.
The population's average speed for cars and trucks travelling the distance of the road is equal to or lower than
To test the claim, a sample of randomly selected cars and trucks would be selected, and their speeds would be recorded. An analytical statistical test like the t-test would then be used to determine the chance of detecting the sample mean speed under the null hypothesis.
The null hypothesis is that the population's mean speed for cars and trucks on the length of the road is equal to or less than 45 mph, whereas the alternative hypothesis is that it is more than 45 mph.
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Solve log (4x + 8) − log 3 = 2.
The value of x for the expression is 73.
What is an expression?An expression is a way of writing a statement with more than two variables or numbers with operations such as addition, subtraction, multiplication, and division.
Example: 2 + 3x + 4y = 7 is an expression.
We have,
log (4x + 8) - log 3 = 2
[ log (a/b) = log a - log b ]
So,
log (4x + 8) - log 3 = 2 can be written as,
log (4x + 8)/3 = 2
Taking exponents on both sides.
(4x + 8)/3 = [tex]10^2[/tex]
4x + 8 = 100 x 3
4x + 8 = 300
4x = 292
x = 73
Thus,
The value of x is 73.
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The value of a house increased by 6% the house then had a vaue of £26000 work out the value of the house before the increase
The value of the house before the increase is £1560
Now, According to the question:
Percentage basically means a part per hundred. It can be expressed in fraction form as well as decimal form. For example, if we say 25%, it means 25 out of 100. So, 25% is equivalent to the fraction 25/100 or 0.4 in decimal form.
"Information available from the question"
The value of a house increased by 6% the house then had a value of £26000.
Now, The expression will be :
= 6% of £26000.
= 6/100 × £26000.
= £1560
Hence, the value of the house before the increase is £1560.
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The figure is made up of a cylinder and a hemisphere.
To the nearest whole number, what is the volume of this figure?
Use 3. 14 to approximate π. Round only your final answer to the nearest whole number.
Enter your answer in the box.
in³
A 7 inch cylinder with a dome on top of it that has a 5 inch diameter
Approximate volume of the figure formed with the cylinder with a dome of hemispherical shape with diameter 5 inch is equal to 170 cubic inch ( nearest whole number ).
Figure attached.
Diameter of the hemisphere = 5 inch
Height of the cylinder 'h'= 7 inch
Radius of the cylinder and hemisphere is same 'r' = 2.5 inch
Volume of the figure
= Volume of the cylinder + volume of the hemisphere
= πr²h + (2/3)πr³
= πr² [h + (2/3)r ]
Substitute the values we get,
= 3.14 ( 2.5 )² [ 7 + (2/3)2.5 ]
= 3.14 (6.25 ) [ 7 + 1.67 ]
= 170.14
= 170 cubic inch ( nearest whole number )
Therefore, the volume of the given figure of the cylinder with dome in hemispherical shape is equal to 170 cubic inch ( nearest whole number ).
The above question is incomplete, the complete question is:
The figure is made up of a cylinder and a hemisphere.
To the nearest whole number, what is the volume of this figure?
Use 3. 14 to approximate π. Round only your final answer to the nearest whole number. Enter your answer in the box in³ .
A 7 inch cylinder with a dome on top of it that has a 5 inch diameter.
Figure is attached.
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The sides of a triangle are measured at a = 4, b = 5 and c = 6. What is the length of Median A?
Jackie made the same
amount of bracelets for
8 days. Write an expression
for the number of bracelets
made.
Jackie made 12 bracelets each day and the equation used to represent this is 8x = 96. The solution has been obtained using the concept of simplification.
What is simplification?
In mathematics, the operation and interpretation of a function to make it simple or easier to grasp is known as simplifying, and the process is known as simplification.
We are given that Jackie made bracelets for 8 days and when he was done he had 96 bracelets with him.
Let 'x' be the number of bracelets made by Jackie each day
So, we get
⇒8x = 96
⇒x = 96/8
⇒x = 12
Hence, Jackie made 12 bracelets each day and the equation used to represent this is 8x = 96.
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Question: Jackie made bracelets for 8 days. When he was done he had 96 bracelets Write equation to express how many bracelets Jackie made each day.
What is the area of this polygon? 28. 5 units² 34. 5 units² 37. 5 units² 40. 5 units² 6 sided polygon on a coordinate plane with vertices at (negative 6, negative 2), (negative 5, 1), (negative 1, 4), (1, 1), (5, 3), and (1, negative 2)
After solving the polygon, the area of this polygon is 34.5 unit². So the option 2 is correct.
an equilateral triangle is a plane shape with at least three straight sides and angles, and usually five or more.
The total length of all the sides equals the perimeter. Apothem is the term for the segment that connects the midpoint of any perpendicular side to any side's midpoint in a polygon.
Let A(-6, -2), B(-5, 1), C(-1, 4), D(1, 1), E(5, 3), and F(1, -2) are the vertices of polygon.
Divide the shape into 3 triangles and 1 rectangle to get 4 separate forms.
Area of a triangle = 1/2 x base x height
Area of rectangle = length x width
Calculate the areas of each of the four forms, then add them.
The area of Shape 1 from the diagram:
Area of shape 1 = 1/2 × 1 × 3
Area of shape 1 = 1.5
Area of shape 2 = 1/2 × 6 × 3
Area of shape 2 = 9
Area of shape 3 = 1/2 × 3 × 4
Area of shape 3 = 6
Area of shape 4 = 3 × 6
Area of shape 4 = 18
Total Area = 1.5 + 9 + 6 + 18
Total Area = 34.5
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The complete question is given below:
at what intercepts is the function f(x)=-1/4x^3 constant ?
The function f(x) = 1/4x³ is constant when the intercept is 0
What are polynomial graph?Polynomials are sums of terms of the form k⋅xⁿ, where k is any number and n is a positive integer.
the graph of a polynomial function is a smooth continuous curve.
The y-intercept is the point where the graph crosses the y-axis and can be found by substituting x = 0. The x-intercepts are points where the graph crosses the x-axis and can be found by making the function equal to zero and solving for x.
therefore f(0) = 1/4 0³ = 0
therefore the y- intercept of the function is 0
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Find the probability of drawing a single card from a 52 card deck for the following
a. Diamond or a 10.
b. A spade or a queen.
Answer: a. The probability of drawing a single card from a 52 card deck that is a diamond or a 10 is 13/52 or 1/4. There are 13 diamonds in a standard deck of 52 cards and 4 of them are 10s. So, the chance of drawing a diamond 10 is 4/52 and the chance of drawing a diamond is 13/52. The probability of drawing a diamond or a 10 is the sum of the individual probabilities, which is (4/52) + (13/52) = 17/52 or 1/3.
b. The probability of drawing a single card from a 52 card deck that is a spade or a queen is 13/52 or 1/4. There are 13 spades in a standard deck of 52 cards and 4 of them are queens. So, the chance of drawing a spade queen is 4/52 and the chance of drawing a spade is 13/52. The probability of drawing a spade or a queen is the sum of the individual probabilities, which is (4/52) + (13/52) = 17/52 or 1/4.
Step-by-step explanation:
Kieran is horseback riding. His horse can trot 470 yards in 2 minutes and 1,410 yards in 6 minutes when Kieran is riding. How fast, to the nearest integer, is Kieran riding if he continues at this rate?
Kieran can ride at 235 yd per min if he continues at this rate.
What is speed?Speed is a scalar quantity that refers to "how fast an object is moving."
Speed can be thought of as the rate at which an object covers distance. A fast-moving object has a high speed and covers a relatively large distance in a short amount of time.
Given that, Kieran is horseback riding. His horse can trot 470 yards in 2 minutes and 1,410 yards in 6 minutes when Kieran is riding.
Here, the question is asking about how fast Kieran riding if he continues at the given rate,
That mean we have to find the speed,
Speed = distance / time
Therefore,
Speed of Kieran = 470 / 2
= 235 yd per min
Speed of Kieran = 1410 / 6
= 235 yd per min
Therefore, we can say kieran us riding for 235 yd in a minute.
Hence, Kieran can ride at 235 yd per min if he continues at this rate.
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5. Segment AB has endpoints at A(-4,-8) and B(10, 13). If point P lies on AB such that AP: BP = 2:5 then find the coordinates of P. Show all your work.
Answer:
To find the coordinates of P, we can use the concept of proportional division of line segments. Given that AP:BP = 2:5, it means that the ratio of the length of AP to BP is 2:5.
Let's first find the vector that represents the direction of AB, which is the vector pointing from A to B. We can find this by subtracting the coordinates of A from the coordinates of B:
(10,13) - (-4,-8) = (14, 21)
This is the vector <14,21>
Now, we can find the point P, which is located two fifths of the way from A to B, by multiplying the vector <14,21> by 2/7 and adding the result to the coordinates of A:
P = A + (2/7) * <14,21>
= (-4,-8) + (2/7) * <14,21>
= (-4,-8) + <8,6>
= (4,-2)
So, the coordinates of P are (4,-2)
We can observe that point P is two fifth of the way from A to B.
a tablet pc manufacturer wishes to estimate the proportion of people who want to purchase tablet pcs which cost more than $700. find the required sample size when its 95% error margin is 0.03.
The required sample size when its 95% error margin is 0.03 with 385 samples.
Sample Size RequiredTo estimate the proportion of people who want to purchase tablet PCs that cost more than $700 with a 95% confidence level and an error margin of 0.03, you can use the formula for sample size:
n = (z² * p * (1-p)) / E²
where:
n is the sample sizez is the standard normal deviate (1.96 for a 95% confidence level)p is the proportion of people who want to purchase tablet PCs that cost more than $700 (unknown)E is the error margin (0.03)Since we don't know the proportion of people who want to purchase tablet PCs that cost more than $700, you can use a reasonable estimate or a conservative estimate (e.g., 0.50) in the formula.
n = (1.96² * 0.50 * (1 - 0.50)) / (0.03²)
n = 384.16
The sample size required is 385.
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which of choices (a) through (d) is not a condition for performing a significance test about a population proportion p?
Answer: The answer is D
Step-by-step explanation: I hope this helps!
Drag numbers to the table so it shows a proportional relationship between x
and y
A proportional relationship between x and y is
y/x = 8.
What is proportional relationship?A proportional relationship is a relationship between two expressions and where changes in one expression means some constant change in the other expression as well. Generally, it is represented as x/y = k, where x and y are two expressions and k is constant.
A table is given below.
To show a proportional relationship:
y/x = k
6/0.75 = 8
So, 1.5 x 8 = 12
And 3 x 8 = 24
So, the complete table is given in the attached image.
Therefore, the complete table is given in the attached image.
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Taye wants to find 352+116. Show how he can use place value to find the sum
Answer:
Step-by-step explanation:
well if you 6+2 is 8 that is the one's place then 50+10 is 60 that is the tens place then 300+100 is 400 that is the hundreds place and add 400+60+8 is 468
You Welcome
Analyzing a Proof Click here to see a proof of the converse of the parallelogram angle theorem. As you read through the proof, look for how to complete the statements on the right. Complete the statements by choosing the correct answer from the drop-down menu. Are being used to get the equation in step 6. Are being used to get the equation in step 8. Are being used to get the equation in step 9. In step 14, "similar argument" means to draw segment and follow the same logic in steps 3-12
The converse of the parallelogram angle theorem is proved.
The term parallelogram is defined as a quadrilateral whose two pairs of sides are parallel to each and the four angles at the vertices are not equal to the right angle and then the quadrilateral.
Here we have to prove the the converse of the parallelogram angle theorem.
Here we have given that LM ≅ ON and LO ≅ MN
Here we have also know that ∠LNO and ∠NLM are alternative and interior angles
Where as the angles ∠OLN and ∠MNL are alternative interior angles
Then according to the reflexive property, it can be written as
=> LN ≅ LN
Then as per the SSS similarity the given triangle is written as,
=> ΔLNO ≅ ΔNLM
Here we have also it can be written as
=> ∠OLN ≅ ∠MNL and ∠LNO ≅ ∠NLM
Then it can be written as LM || ON and LO || MN
Then the LMNO is a parallelogram
Complete Question:
Analyzing a Proof Click here to see a proof of the converse of the parallelogram angle theorem. Complete the statements by choosing the correct answer from the proof of theorem.
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chris made 27 of the 45 putts while practicing golf. What percent of putts did he miss
Answer: The percent of putts that he missed is 60%.
Step-by-step explanation: You divide 27 by 45, and that equals 0.6. After that you multiply 0.6 by 100, which gets it to 60/60%.