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mart [117]
3 years ago
8

Write an equation to solve the following. Show all your work, including the steps for solving the equation and checking your ans

wer. Clearly state your answer.
The perimeter of a rectangular photo is 72 cm. The length is twice the width.
What are the length and width of the photo?
(Hint: The formula for perimeter is 2w + 2l = P where w is the width, l is the length, and P is the perimeter.)
Answer:
Mathematics
1 answer:
vlada-n [284]3 years ago
3 0
The perimeter is 72 and P=2(L+W), furthermore, L=2W so altogether...

2(L+W)=72  and using L=2W in this we have:

2(2W+W)=72

3W=36

W=12 and since L=2W

L=24

So the length is 24cm and the width is 12cm.
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For Matthew's lemonade recipe, 4 lemons are required to make 6 cups of lemonade. At what rate are lemons being used in cups of l
Svetlanka [38]

Answer:

1.5 cups of lemonade per 1 lemon

Step-by-step explanation:

find the unit rate:

4/4=1

6/4=1.5

1.5 cups of lemonade per 1 lemon

I hope I read this correctly

3 0
3 years ago
Solve the following system of equations using the elimination method.
Margaret [11]
So for eliminating, you only solve for one variable first.

I solved for y, so I multiplied by -4 to eliminate the x.

Then I got y= -1

I then substituted that to one of the equations to get x.

3 0
3 years ago
Complete the solution of the equation. Find the value of y when x equals 15.
GuDViN [60]
So first, we want to substitute in 15 to all the x variables.

So,

3x - 8y = 5

Becomes

3 * 15 - 8y = 5

Or, 

45 - 8y = 5

So here, you can subtract 45 from both sides to move all like terms to one side.

-8y = 5 - 45

And then simplify:

-8y = -40

Then divide both sides by -8

y = 5
4 0
3 years ago
Read 2 more answers
The total points earned in the football game was 42. The Falcons earned 2/3 of that score. How many points did the other team sc
Elodia [21]

Step-by-step explanation:

other team earned 1/3,

42/1 * 2/3 = 84/3

so 84/3 is 28

then the Falcons = 28

so other team = total score - the Falcons

which is 42 - 28 = 14

4 0
3 years ago
Suppose that the breaking strength of a rope (in pounds) is normally distributed, with a mean of 100 pounds and a standard devia
EleoNora [17]

Answer:

0.961

Step-by-step explanation:

To answer this, find the area under the standard normal curve to the left of 130 pounds:

Using the function normalcdf( on a TI calculator, we get:

normalcdf(-1000, 130, 100, 17) = 0.961

8 0
2 years ago
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