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malfutka [58]
3 years ago
9

Jessie is saving up for a purse that is $890. She gets $8 allowance per week, and already has $80 saved up. How long will it tak

e Jessie to buy the purse?
Mathematics
1 answer:
LekaFEV [45]3 years ago
8 0

Answer:

101.25 weeks

Step-by-step explanation:

890-80=810

810/8=101.25

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Answer:

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And the width for this case is:

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And we know that the perimeter is given by:

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And replacing we got:

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And symplifying we got:

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Step-by-step explanation:

For this problem we know that the lenght of the rectangle is given by:

L= x

And the width for this case is:

W= 5x^3 +4 -x^2

And we know that the perimeter is given by:

P= 2L +2W

And replacing we got:

P(x) = 2x +2(5x^3 +4 -x^2)= 2x +10x^3 +8 -2x^2

And symplifying we got:

P(x)= 10x^3 -2x^2 +2x+8

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Answer:

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Step-by-step explanation:

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The area of a rectangle is denoted by: A = lw, where l is the length and w is the width. Here, the length is l = 4 and the width is w = 7, so the area is:

A = lw

A = 7 * 4 = 28 cm²

The area of a trapezoid is denoted by: A = \frac{(b_1+b_2)*h}{2}, where b1 and b2 are the bases and h is the height. Here, the two bases are 7 and 19 and the height is h = 8. So, the area is:

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