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3 years ago

9

Joe and Ben are saving money for a new x-box game. Joe has saved $15.00 in 2 weeks and $37.50 in 5 weeks. Ben's savings are repr

esented by the equation
y=8.25x
y=8.25x
.
Find the difference in their savings each week?

1 answer:

ivanzaharov [21]3 years ago

5 0

Answer:

37.50/5 = $7.50/week

so the difference is 8.25-7.50 = $0.75/week

Step-by-step explanation:

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Part B) The perimeter of the square is $3x\ cm$

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Part D) $39\ cm^{2}$

Step-by-step explanation:

Part A) Find the length of the rectangle

we know that

The perimeter of rectangle is equal to

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Part B) Find the perimeter of the square

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Part C) Find how many cm greater the rectangle's perimeter than the square's perimeter if x=4

<u>Find the value of rectangle's perimeter</u>

$P=8x\ cm$ ------> $P=8(4)=32\ cm$

<u>Find the value of square's perimeter</u>

$P=3x\ cm$ ------> $P=3(4)=12\ cm$

<u>Find the difference</u>

$32\ cm-12\ cm=20\ cm$

Part D) Find how many square cm greater the rectangle's area is than the square's area if x=4

<u>Find the value of rectangle's area</u>

$A=(3x)(x)=3x^{2}\ cm^{2}$ ------> $A=3(4^{2})=48\ cm^{2}$

<u>Find the value of square's area</u>

$A=((3/4)x)^{2}\ cm^{2}$ ------> $A=((3/4)(4))^{2}=9\ cm^{2}$

<u>Find the difference</u>

$48\ cm^{2}-9\ cm^{2}=39\ cm^{2}$

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