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Ulleksa [173]
3 years ago
6

Angel has $60 and his sister has $120. Angel saves $7 per week, and his sister saves $5 per week. Which equation and solution re

present the number of weeks, w, it will take for the siblings to have the same amount of money?
A. 7w + 60 = 5w + 120; w = 30

B. 60w + 7 = 120w + 5; w = 30

C. Not here

D. 7w - 60 = 5w - 120; w = 30
Mathematics
2 answers:
dusya [7]3 years ago
7 0

Answer:

9 weeks

Step-by-step explanation:

borishaifa [10]3 years ago
6 0

Answer:

A. 7w + 60 = 5w + 120; w = 30

Step-by-step explanation:

  • 60 + 7x = 120 + 5x
  • 7x - 5x = 120 - 60
  • 2x = 60
  • x = 30
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ADC is a line, which is perpendicularly bisected by BD.

Thus AD = DC

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elena-s [515]

factor took out was y^2 , And resultant expression is  y\sqrt{3} .

<u>Step-by-step explanation:</u>

Here we need to Take a factor out of the square root:  sqrt(3y^2) , where y<0 .Let's do this :

The given expression is  sqrt(3y^2) or , \sqrt{(3y^2)}

We know that , to take out a factor out of the square root that factor must have a degree in multiple of 2 , as   x^2,x^4,x^16,(x+6)^2,(x-2)^4  etc . So ,

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Step-by-step explanation:

​

=

x

1.8

​

\cos 40=\frac{1.8}{x}

cos40=

x

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x\cos 40=1.8

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Cross multiply.

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Divide each side by cos 40.

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