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exis [7]
4 years ago
11

saves $20 per week for n weeks she saves up to $240 write an equation to express how many weeks it took to save

Mathematics
1 answer:
miv72 [106K]4 years ago
6 0
$20 a week for n weeks
$240 in total
20n=240
n = 240/20
n = 12
The answer is 12 but when you are writing this answer, be sure to show all your work.
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What is the solutions of the equation 2 (x+2) ^2-4=28
JulsSmile [24]

Answer:

x = 2            x = -6

Step-by-step explanation:

2 (x+2) ^2-4=28

Add 4 to each side

2 (x+2) ^2-4+4=28+4

2 (x+2) ^2= 32

Divide by 2

2/2 (x+2) ^2=32/2

(x+2)^2 = 16

Take the square root of each side

sqrt((x+2)^2) =±sqrt( 16)

x+2 = ±4

Subtract 2 from each side

x+2-2 = -2±4

x = -2±4

x = -2+4      and x = -2-4

x = 2            x = -6

3 0
3 years ago
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Goryan [66]
In equation form it would be the following:

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3 years ago
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The weight of a newborn is 7.5 pounds. The baby gained one-half pound a month constantly for its first year.
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3 years ago
I need help on three questions. I hope it doesn't take up a lot of time.
Romashka-Z-Leto [24]

Answer:

1) x ≤ 8

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3 years ago
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