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slava [35]
2 years ago
7

30 PTS!! URGENT JUST 3 QUESTIONS PLEASE

Mathematics
1 answer:
Harrizon [31]2 years ago
4 0

Answer:

1. 7    

2. B

3. C

Step-by-step explanation:

hope its right

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Step-by-step explanation:

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The area of a rectangular window is 6525cm2. If the length of the window is 87cm, what is its width?
nataly862011 [7]

Answer:

width= 75 cm

Step-by-step explanation:

We need to recall the formula to calculate the area of a rectangle, since we are dealing with a rectangular window:

Area of rectangle = width * length

therefore, since they give us the window's area: 6525 cm^2, and also the window's length: 87 cm, we just need to replace those values in the area formula and solve for the unknown "width". We do such by dividing both sides of the equation by 87 cm in order to isolate the unknown on one side of the equal sign;

6525cm^2 =87cm*width\\\frac{6525cm^2}{87cm} =width\\width=75cm

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A rectangle has a perimeter equal to 24 if we consider its width x how could we talk about its length y in terms of x what are t
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2x + 2y must equal 24. 24 - 2x = 2y and 24 - 2y = 2x. Therefore, 12 - y = x. x could be able to add with y to get 12.

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