Put the rational numbers in order from least to greatest. -4.2, -4 1/2, -4, 0, 4

Answers

Answer 1

Let's express the mixed fraction in decimal.

[tex]-4\frac{1}{2}=-4.5[/tex]

Then, from least to greatest, the numbers are

[tex]-4.5,-4.2,-4,0,4[/tex]


Related Questions

Can some on help me on these please and thank you!

Answers

If you divide the first one by those numbers it will give you the total

write the decimal for the given words:forty-one ten-thousandths

Answers

[tex]41.01[/tex]

1) Since we know the decimal places, then we can write out the following number:

[tex]41.010[/tex]

Note the 3 decimal places after the dot is the thousandth's place. Note that we can either write the last digit or omit it.

3/5 3) Find the equation of the line passing through the points (1, -2) and (-2, 7). Write the equation in slop-intercept from. Oy = 3x - 5 Oy= 3x + 13 Oy=-3x + 1 Oy=-3x - 2 Previous Next Submit arch O

Answers

hello

to solve this question we would first of all find the slope of the line

[tex]\begin{gathered} slope(m)=\frac{y_2-y_1}{x_2-x_1} \\ \end{gathered}[/tex][tex]\begin{gathered} y_1=-2 \\ x_1=1 \\ y_2=7 \\ x_2=-2 \end{gathered}[/tex]

we can now substitute this into the equation

[tex]\begin{gathered} m=\frac{y_2-y_1}{x_2-x_1} \\ m=\frac{7-(-2)}{-2-1} \\ m=\frac{7+2}{-3}=\frac{9}{-3}=-3 \end{gathered}[/tex]

the slope of the line is -3

we can write out how the equation looks

[tex]\begin{gathered} y=mx+b \\ y=-3x+b \\ b=\text{intercept} \end{gathered}[/tex]

we can use one of the points to solve for b

[tex]\begin{gathered} y=-3x+b \\ u\sin g\text{ the first point} \\ (1,-2) \\ -2=-3(1)+b \\ -2=-3+b \\ b=3-2 \\ b=1 \end{gathered}[/tex]

we can now rewrite our equation with slope and intercept

[tex]\begin{gathered} y=mx+b \\ y=-3x+1 \end{gathered}[/tex]

from the calculation above, the equation of the line is given as y = -3x + 1

Multiply.3/5⋅3/4Enter your answer as a fraction in simplest form in the box.

Answers

Hello!

We have the following multiplication:

[tex]\frac{3}{5}\times\frac{3}{4}[/tex]

To solve it, we have to multiply numerator with numerator and denominator with denominator, look:

[tex]\frac{3}{5}\times\frac{3}{4}=\frac{3\times3}{5\times4}=\frac{9}{20}[/tex]

So, the fraction in is the simplest form is 9/20.

The figure below represents of a full circle. Find the measure of the marked centralangle.10Answer: Central Angle=Submit Answerattempt 1 out of 2

Answers

ANSWER

36°

EXPLANATION

A full circle has a central angle of 360°. If this figure represents 1/10 of a full circle, then its central angle is 1/10 of the central angle of the full circle:

[tex]360\degree\cdot\frac{1}{10}=36\degree[/tex]

Hence, the measure of the central angle in this figure is 36°.

Find the quotient and remainder for the following expression using the division algorithm.

33402

Answers

The quotient of 33/402 is 0 and the remainder is 369

How to determine the quotient?

The division expression is given as

33/402

From the above expression, we have

Numerator = 33

Denominator = 402

As a general rule of quotient, when the denominator is greater than the numeration, then the quotient is 0

How to determine the remainder?

The division expression is given as

33/402

From the above expression, we have

Numerator = 33

Denominator = 402

As a general rule of quotient, when the denominator is greater than the numeration, then the remainder is 0

Remainder = Denominator - Numerator

This gives

Remainder = 402 - 33

Evaluate

Remainder = 369

This means that the remainder of 33/402 is 369

Read more about quotient at

https://brainly.com/question/629998

#SPJ1

Possible question

Find the quotient and remainder for the following expression using the division algorithm.

33/402

Which would be used to solve this equation? Check all that apply.
StartFraction p Over 3 EndFraction = 12

Answers

The steps that would be applied to solve the equation are:

multiplying both sides of the equation by 3

substituting 36 for p to check the solution

What are the steps to take to solve the equation?

An equation is a statement in mathematics that consists of two or more expressions that are connected by an equal to sign.

The given equation is:

p / 3 = 12

In order to solve, the equation, p has to be made the subject of the formula.

In order to make the subject of the formula, take the following step:

Multiply both sides of the equation by the denominator of p. The denominator of p is 3.

3 x (p/3) = (12 x 3)

p = 36

Substitute for p using 36 to check the accuracy of the answer derived

36 / 3 =12

Here are the options:

subtracting 3 from both sides of the equation

multiplying both sides of the equation by 3

dividing both sides of the equation by 3

substituting 4 for p to check the solution

substituting 36 for p to check the solution

To learn more about mathematical equations, please check: https://brainly.com/question/26427570

#SPJ1

11. Richard's resting heart rate is 54 beats per minute (bpm). a. How many times will his heart beat in 4 minutes? b. How long will it take to beat 855 times?​

Answers

Answer: a) 216 beats     b) almost 16 minutes

Step-by-step explanation:

54 beats/minute x 4 minutes = 216 beats

855 beats / 54 beats/minutes = 15.83333 minutes

Hope this helps!

If it cost $13 to fill a gas tank in 2000, how much of the same tank
could be filled with $13 in 2010?

Answers

Answer:

4.58 gallons

Step-by-step explanation:

13$ in 2000 = 8 1/3 gallons

13$ in 2010 = 4.577 gallons

consider the function h(x)=(1/64)(x^5+16x^3). It can be seen from the graph that h(x) is one-to-one and so has an inverse function h^-1(x). Compute the slope of each respective graph at this point.
(h^-1)'(-32)=

Answers

The numeric value of the slope of the inverse function at x = -32 is given by:

(h^-1)'(-32) = 0.03.

How to find the inverse of a function?

To find the inverse of a function, we exchange x and y in the original function, then isolate y.

This means that if the original function has a point (x,y) graphed, the inverse will have point (y,x) graphed.

From it's graph, the function h(x) has these two following points:

(-4.552, -32) and (-4.555, -32.1)

Hence the inverse will have these two following points:

(-32, -4.552) and (-32.1, -4.555).

The slope is given by change in y divided by change in x, hence:

(h^-1)'(-32) = (-4.552 - (-4.555))/(-32 - (-32.1)) = 0.03.

Which is also equivalent to the derivative of the inverse function at x = -32.

More can be learned about inverse functions at https://brainly.com/question/3831584

#SPJ1

the following group of equations represents which type of system {x^2 + y^2 = 9 x^2/16 + y^2/9 =1

Answers

The given group of equations represents a system of non-linear      equations.

How to know if an equation is linear or nonlinear?

A mathematical equation must take the form y = m x +b in order to be classified as a linear function (in which m is the slope and b is the y-intercept). This form cannot be satisfied by a nonlinear function.

Only first degree variables and terms that contain the products of variables are present in a linear equation.

However, in the case of nonlinear equations, either the equation comprises a product of variables or at least one of the variables is not of the first degree.

If the graph of an equation is a straight line, the equation is linear. Otherwise, if the power of x is more than one, then it is nonlinear.

The given equations has the degree more than 1 and their graph is also not a straight line.

Hence, the given group of equations represents a system of non-linear      equations.

Learn more about Linear and Non-linear equations here;

https://brainly.com/question/2030026

#SPJ10

Question 3
Write an addition problem that has a sum of -3/ 2/3

Answers

The answer is -3 2/3 + 1 = -2 3/5

It's a linear equation form  -3/ 2/3

What is linear equation?

An equation between two variables that, when plotted on a graph, produces a straight line or say first degree equation is known as linear equation.

An addition problem that has a sum of -3 2/3 may take different forms one of which is the answer supplied where; -3 2/3 is added to 1 and the result is -2 3/5

Therefore, the answer of  -3 2/3 is -2 3/5

To read more about Linear equation

https://brainly.in/question/24318520

#SPJ10

Nancy is buying a new pair of boots. The store is having a sale and all boots are 20% off. Part A Choose an expression that can represent the sale price of the boots where x is the original price of the boots (0.2x, 0.8x, 1.2x) Part B Thus means that the sale price of the boots is (20%, 80%, 120%) of the original. cost

Answers

Answer:

Part A: 0.8x

Part B: 80% of the original price.

Explanation:

Part A:

The store sells the boots at a sale price of 20% off, meaning the price of the shoes is 100% - 20 % = 80% of the original price. If we call x the original price, then the sale price would be

[tex]\frac{80}{100}\times x[/tex][tex]=0.8x[/tex]

Part B:

The sale price of the boots is 100% - 20% = 80% of the original price.

20 more than half a number is 70 what is the number

Answers

The expression for this problem can be shown as:

1/2n + 20 = 70

where n represents the number. We can solve by isolating the variable. To do this, we subtract 20 on both sides to make the equation become:

1/2n = 50

Let’s divide both sides by 1/2 to find that:

n = 100

We can substitute 100 into the initial equation for verification:

1/2(100) + 20 = 70

50 + 20 = 70

Since this is true, we now know that the number is 100.

complete it for me please urgent​

Answers

Answer:

8. y=3x+2

9. y=2x-6

10. y=1/2x+3

14. y=-2x

all i know hope this helps

What is the slope of the line passing through (5, 0) and (2, 0)

A) 2/5
B) 0
C) 5/2
D) Undefined

Answers

Answer: B. 0

Explanation:

16, 12, 20,35,21,17,19,20,13,12,15
What is the
O A. 7 OC. 20
OB. 13 OD. 12
interquartile range of the scores?

Answers

Interquartile range of the scores is 7.

What is interquartile range?

When values are ranked from lowest to highest, the IQR designates the middle 50% of those values. Find the median (middle value) of the bottom half and upper half of the data before calculating the interquartile range (IQR). Quartile 1 (Q1) and Quartile 3 are these values (Q3). The IQR represents the variation between Q3 and Q1. The strongest indicator of variability in data sets with outliers or skewed distributions is the interquartile range. It's unlikely to be impacted by outliers because it's based on numbers that come from the center half of the distribution.

Given Set

16, 12, 20,35,21,17,19,20,13,12,15

12, 12, 13, 15, 16, 17, 19, 20, 20, 21, 35

25 percentile(Q₁) = 13

50 percentile(Q₂) = 17

75 percentile(Q₃) = 20

Interquartile range = Q₃ - Q₁

Interquartile range = 20-13

Interquartile range = 7

Interquartile range of the scores is 7.

To learn more about interquartile range, visit:

https://brainly.com/question/15686744

#SPJ13

Dose anyone get this i am confused

Answers

Answers:

a) 32500

b) 0.00604

c)  2.4 * 10^6

d) 1.47 * 10^(-3)

===================================================

Explanation:

The exponent over the 10 tells us how many spaces to move right or left.  If the exponent is positive, we move right. If negative, we move left. Think of a number line.

For part (a), the exponent is 4. So we move the decimal point 4 spaces to the right.

The 3.25 then becomes 32500

--------------

In part (b), the exponent -3 means we move 3 spots to the left to go from 6.04 to 0.00604

---------------

Part (c)

Place the decimal point between the first two digits and erase the zeros to get 2.4

Then we need to move the decimal point 6 spots to the right to get back to 2,400,000 again

Therefore we can say 2,400,000 = 2.4*10^6

---------------

Part (d)

Place the decimal point just after the first nonzero digit, and erase the zeros to the left to get 1.47

We must move the decimal point 3 spots to the left to go from 1.47 back to 0.00147 again

It means 0.00147 = 1.47*10^(-3)

Answer: he is right

Step-by-step explanation:

please follow directions and refer to rubric Will mark brainliest
screenshots attached thank you I really need this

Answers

Answer:

Step-by-step explanation: To find the x-intercept, substitute in

0

for

y

and solve for

x

. To find the y-intercept, substitute in  0 for x

and solve for  y

x-intercept(s):  735,0

y-intercept(s):   0,490

How many times greater is the value of 4,563 than the value of 4.563?

Answers

The given number 4,563 is 4558.437 times greater than 4.563.

What is decimal?


Decimals are numbers that have two components, a whole number component and a fractional component, which are separated by a decimal point. 12.5 is a decimal number, for instance.

Using a single notation, decimals can convey both the entire number and the fraction. Whole numbers and fractions are separated from each other in decimals by a point called a decimal point. For instance, in the number 65.4, the entire number is 65, while the fractional half is 4 (10).

The given numbers are 4,563 that is four thousand five hundred sixty- three and 4.563 that is four point five six three.

The difference between these two numbers is 4558.437.

To know more about decimal visit:
https://brainly.com/question/109147

#SPJ9

Write a math problem that this expression could be used to represent. Create a visual fraction model to represent the situation. Record the equation with the product. 9x6

Answers

Please, give me some minutes to take over your question

Ben run 6 miles in an hour. How many miles does Ben run in nine hours?

Ratio

6 miles / 1 hour

6 miles/ 1 hour = x miles / 9 hours

x= 6 * 9 = 54 miles

Ben runs 54 miles in 9 hours.

what is the answer to 7 3/16 + 4 5/48

Answers

Answer:

[tex]11\frac{14}{48}[/tex]

Step-by-step explanation:

[tex]7\frac{3}{16}+4\frac{5}{48}[/tex]

First, make these improper fractions.

[tex]\frac{115}{16} +\frac{197}{48}[/tex]

And now to add these fractions, make the denominators the same.

For that, multiply both the numerator and denominator of the fraction 115/16 by 3.

[tex]\frac{115*3}{16*3} +\frac{197}{48}\\\\\frac{345}{48} +\frac{197}{48}\\\\\frac{542}{48} \\\\=11\frac{14}{48}[/tex]

HELP ASAP WILL GIVE BRAINLEST Write 4,650,000,000 in scientific notation.

4.65 x 10−9
4.65 x 109
465 x 10−7
465 x 107

Answers

Answer:

  (b)  4.65×10⁹

Step-by-step explanation:

You want 4,650,000,000 written in scientific notation.

Scientific Notation

A number is written in scientific notation in the form shown in the second attachment. The coefficient has one digit to the left of the decimal point. The remaining significant digits of the number are to the right of the decimal point.

The exponent is the same as the exponent of the place value of the most significant digit of the number. Some of those exponents are shown in the first attachment.

Application

The given number has its most significant digit (4) in the "billions" place. The corresponding exponent of 10 is 9. Putting 4 to the left of the decimal point, the number is written in scientific notation as ...

  4.65×10⁹

__

Additional comment

In the above, we have used the superscript font to indicate the exponent. In plain text, an exponent is indicated with a caret (^), as in 4.65·10^9.

If you use an "x" character for a multiplication symbol, you need to make sure it cannot be confused with a variable named "x".

In spreadsheets and some calculators, the base and exponent are written as "E". Here, the number would be 4.65E9. (This is a carryover from one of the earliest high-level computer programming languages.)

(You will notice that the number in the second attachment is similar to, but not the same as, the one given in this problem statement. We intend that attachment to show the format, not the answer to this question.)

Lynn Golding is employed as a payroll supervisor and earns $18 per hour. This pay period she worked 40 hours. She is married and claims 6 allowances. The state tax is 3.0% of gross earnings, and the local tax is 1.5% of gross earnings. Lynn pays $35 for medical insurance and $17 in union dues. Calculate Gross pay, net pay, federal income tax, social security, Medicare, State, Local, Medical and Union Dues.​

Answers

The earnings and deductions, are given as follows:

Gross pay: $720.Net pay: $498.07.Federal income tax: $82.45.Social security tax: $44.64.Medicare tax: $10.44.State tax: $21.60.Local tax: $10.80.Medical due: $35.Union due: $17.

What are her earnings and deductions?

First we find her gross earning, which is given by the hourly wage multiplied by the number of hours worked, hence:

Gross pay = 40 x 18 = $720.

Hence her yearly income is given by:

Yearly income = 52 x 720 = $37440.

Meaning that her federal tax rate is of $19.76 a week plus 12% of the excess over $197.60, then:

Federal tax = 19.76 + 0.12 x (720 - 197.60) = $82.45.

The social security tax rate is of 6.2% of her gross weekly earnings, hence it is given by:

Social Security = 0.062 x 720 = $44.64.

The medicare tax rate is of 1.45% for Lynn(employee), hence:

Medicare = 0.0145 x 720 = $10.44.

The state tax is 3% of her gross earnings, hence:

State tax = 0.03 x 720 = $21.60.

The local tax is 1.5% of her gross earnings, hence:

State tax = 0.015 x 720 = $10.80.

The medical and union dues are stated in the problem, hence the sum of all discounts is given by:

82.45 + 44.64 + 10.44 + 21.60 + 10.80 + 35 + 17 = $221.93.

The net pay is the gross pay subtracted by the discounts, hence:

Net pay = 720 - 221.93 = $498.07.

Missing information

The value of an allowance is not stated, hence they are not considered for the calculations.

More can be learned about earnings and deductions at https://brainly.com/question/14299456

#SPJ1

Give two real-world situations that could be represented by the value -2

Answers

We have to represent two real world situations that could be represented by the value -2.

(1) Let there be a fish which is 2 meter below the sea level.

Considering the sea level point to be zero and denoting the points above sea level as positive and the points below sea level as negative, like we do in a cartesian plane, the point which is 2 meter below the ground level will be -2.

(2) Let there be a box buried 2 feet under the ground.

Considering the ground level to be zero and denoting the point above the ground level as positive and the points below ground level as negative, the point which is 2 meter below the ground level will be -2.

To learn more about cartesian plane, here:-

https://brainly.com/question/28574364

#SPJ1

suppse that you buy and exerice ball with diameter of 85 cm and your brother buys and exercise ball with 65 cm what is the diffrence bewtween the volume and surface are of both balls? round to the nearest 100

Answers

Given:

• Diameter of my ball = 85 cm

• Diameter of my brother's ball = 65 cm

Let's find the difference between the volume of the both balls and also let's find the difference between the surface area of both balls.

A ball has the shape of a sphere.

Therefore, we have the following formulas:

• Volume of a sphere formula:

[tex]V=\frac{\pi d^3}{6}[/tex]

• Surface area of a sphere formula:

[tex]A=\pi d^2[/tex]

Where d is the diameter.

• Now, to find the difference between the volume of both balls, we have:

[tex]V_1=\frac{\pi d^3}{6}=\frac{\pi85^3}{6}=321555.09\approx321555\text{ cm}^3[/tex]

The volume of my ball is 321555 cubic cm.

[tex]V_2=\frac{\pi *65^3}{6}=143793.3\approx143793\text{ cm}^3[/tex]

Volume of my brother's ball is 143793 cubic cm.

Therefore, to find the difference between the volume of both balls, we have:

V = V1 - V2 = 321555 - 143793 = 177762 cm³ = 177800 cm³

The difference between the volume of both balls is 177800 cm³

• Now for the surface area, we have:

[tex]A_1=\pi d^2=\pi *85^2=22698.01=22698\text{ cm}^2[/tex]

The surface area of my ball is 22698 cm²

For surface area of my brother's ball:

[tex]A_2=\pi d^2=\pi *65^2=13273.23\approx13273\text{ cm}^2[/tex]

The surface area of my brother's ball is 13273 cm².

Difference of surface areas:

A = A1 - A2 = 22698 - 13273 = 9425 cm² = 9400 cm²

Therefore, the difference between the surface area of both balls is 940O cm².

ANSWER:

• Difference between volume of both balls= 177800 cm³

• Difference between the surface area of both balls = 9400 cm²

The following data shows the number of contacts that a sample of high school students had in their cell phones. 154,109,137,115,152,140,154,178,80,103,126,126,137,165,165,129,200,148A.) Identify any outliers in the dataB.) Draw a box plot to represent the dataC.) Analyze your data

Answers

Given set :

154,109,137,115,152,140,154,178,80,103,126,126,137,165,165,129,200,148.

Rewrite the given data set from least to highest values.



80, 103, 109, 115, 126, 126, 129, 137, 137, 140, 148, 152, 154, 154, 165, 165, 178, 200.

Recall that a data point is an outlier if it is over 1.5 times the IQR below the first quartile or 1.5 times the IQR above the third quartile.

We know that

[tex]\text{IQR}=Q_3-Q_1[/tex][tex]Q_3=The\text{ third quartile = The median of the upper half of the data set.}[/tex]

[tex]Q_1=The\text{ first quartile = The median of the lower half of the data set.}[/tex]

The upper half of the data set is

{137, 140, 148, 152, 154, 154, 165, 165, 178, 200}

The number of data in the set is even.

There are two middle terms in this upper half of the given set. That are 154 and 154.

[tex]Q_3=\frac{154+154}{2}=154[/tex]

The lower half of the data set is

{80, 103, 109, 115, 126, 126, 129, 137, 137, 140}

The number of data in the set is even.

There are two middle terms in this lower half of the given set. Which are 126 and 126.

[tex]Q_1=\frac{126+126}{2}=126[/tex]

Substitute known values in the IQR formula.

[tex]\text{IQR}=154-126=28[/tex]

We get IQR=28.

[tex]\text{HIgher outlier }\ge Q_3+(1.5\times IQR)[/tex][tex]undefined[/tex]

Use congruent triangles to find side lengths.If you were asked to draw the two congruent triangles described below, what would be each side length? ABC≈ EFGAB = 6, GF = 8, AC = 10.

Answers

ANSWER

• AB and EF

,

• BC and FG

,

• AC and EG

EXPLANATION

The order in which the vertices of the triangles are named gives us which sides are congruent. If ΔABC ≅ ΔEFG, then the pairs of corresponding congruent sides are,

[tex]\begin{gathered} AB\cong EF \\ BC\cong FG \\ AC\cong EG \end{gathered}[/tex]

I need help with this question but no one is helping me! Can someone please help me.​

Answers

Step-by-step explanation:

"with replacement" is important.

that means that the mixture of the marbles and therefore the chances to pull certain marbles does not change with the previous pull.

a probability is always

desired cases / totally possible cases

we have 14 marbles in the bag

4 orange

2 green

8 purple

the probability to pull an orange marble is therefore

4/14 = 2/7

the probability to pull a green marble is therefore

2/14 = 1/7

the probability to pull a purple marble is therefore

8/14 = 4/7

a.

a green marble is pulled AND then a purple marble is selected.

we need to combine both probabilities for one combined event :

1/7 × 4/7 = 4/49

b.

a purple marble and then a green marble is selected.

4/7 × 1/7 = 4/49

since we replace the marbles after every pull, both probabilities are the same, of course.

every pull has the same probability for each desired event.

c.

2 orange marbles are selected.

2/7 × 2/7 = 4/49

d.

2 non-orange marbles are pulled

there are 10 non-orange marbles. so this is

10/14 × 10/14 = 5/7 × 5/7 = 25/49

the model of the skateboard you want to buy is available in 9 different colors and 3 different styles. in how many ways can you order the board?

Answers

Multiply the number of colors by the number of styles

9 x 3 =27 ways

Other Questions
Could you provide a step by step resolution for this question? B= (s+z/2) m solve for s please help i need to get my grade up how did world war ii affect the economy? - ApexA. it decreased the number of working women.B. It decreased employment.C. it increased the variety of consumer goods.D. it increased wages. Write the equation of a line using the given information:Same slope as x=-2 and passes through the point (7,-1) Which of these best describes the two main conflicts Lara faces in the story? Enjoying the time with the twins and spending too much energy Working hard to earn money and wanting to get some restKeeping the twins nourished and finding easy food to feed Having to leave her ill father and caring for the energetic twins List 2 ways that will not prove two triangles are congruent What type of decision-support system analysis attempts to predict the impact of changes in the assumptions, that is, the input data, on the proposed solution?. Name the transformations happening to the absolute value parent function, f(x) = |x|, in each of the following in the correct order. ignacio is a toddler who loves going to the library. when ignacio and his mother get to the library, ignacio knows exactly where to go to get to the children's section. what type of memory is used in this instance? what is the base and coefficient of the exponential function: nokia is a cell phone brand that offers digital cameras as part of its cell phone products. it is now in direct competition with camera brands such as canon and sony, and has become the world's largest seller of cameras. this is an example of: metric preferred to write 5.8 * 10 to -3 g hello i have a upcoming test and want to know how to solve this Evaluate 8x - 4y when x = 2 and y = 3(b) o Why did many African people adopt Islam Provide an objective summary of the article embarrassed blame your brain An investment firm invested in two companies last year. They invested $12,000 in Company A and made a profit of 14%. Theyinvested $8000 in Company B and made a profit of 21%.Answer the questions below. Do not do any rounding.(a) What was the investment firm's total profit?$0(b) What was the percent profit for their total investment? David leaves the house to go to school. He walks 200 m west and 45 m north. how far away is he from his starting point? I need help with Systems of 2 equations Word Problems. Could some one help? If L, M and N are the midpoints of the sides of the triangle PQR, PR= 46, PQ = 40, and LN = 17, find each measure.; LM, MN, QR and the perimeter of LMN