3 years ago

How does doubling the side length of a rectangle affect its area

1 answer:

7 0

Doubling the side-lengths will multiply the area by four.

Proof:
Let the side-lengths of the rectangle by x and y. Clearly, the area will be x*y=xy. The new rectangle will have side-lengths 2x and 2y, and thus area 2x*2y=4xy. 4xy/xy=4 - hence, the new rectangle has four times the area of the old one.

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1) 5x + 3 = 23<br> Is the value of x 4

Nataly [62]

Answer:

X = 4

Step-by-step explanation:

5x + 3 = 23

Subtract 3 from both sides: 5x = 20

Divide both sides by 5: x = 4

3 0

2 years ago

Write h(x) in general form <br> h(x)=x(x-5)+5

bekas [8.4K]

H(x)

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3 years ago

A sequence of numbers can be found by using the expression 2n + 7. Find the 3rd

xenn [34]

Answer:

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3 years ago

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Vlad1618 [11]

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8 0

3 years ago

Allan and Dave bowl together and their combined total score for one game was 375 points. Allan’s score was 60 less than twice Da

Bess [88]

A system of equations is:
B )
x + y = 375
x = 2 y - 60
We will solve this system:
2 y - 60 + y = 375
3 y = 435
y = 435 : 3
y = 145
x = 375 - 145
x = 230
Allan`s score was 230 and Dave`s score was 145.

6 0

3 years ago

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