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White raven [17]
3 years ago
12

Joshua babysits for his sister after school. He is paid

Mathematics
2 answers:
Yakvenalex [24]3 years ago
7 0

Answer:

9 hrs

Step-by-step explanation:

Joshua has already saved $43.50 so you subtract $43.50 from 70 which leaves you with $26.50. Joshua still needs $26.50.

$26.50 divided by $3 per hr is 8.833 repeating. Obviously you can’t work 8.833 hrs so you round it up to 9. So, Joshua has to work for at least 9 hrs more.

Hope this helps :)

Darina [25.2K]3 years ago
4 0
The answer is 14.50. Hope that helped
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Step-by-step explanation:

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Step-by-step explanation:

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3 years ago
Need help.
aev [14]

Answer:

1. y= 3x+7

2.y=1/2 x -1

Step-by-step explanation:

1.

Parallel lines have the same gradient.In the equation given,

y= 3x+5 , the slope is 3

So now, you find the equation of a line passing through point (-1,4) with m=3

m=Δ y/Δx

3= y-4/ x--1

3= y-4 /x+1

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3x+3 =y-4

3x+3+4=y

⇒⇒ y= 3x+7   is the equation.

2.

Two lines that are perpendicular to each other have the product of their slopes to be -1

Given equation to be y= -2x +8 then, m₁ = -2

Finding m₂ will be;

m₁ *m₂ = -1

-2 * m₂ = -1

-2 m₂ = -1

m₂ = -1/-2 = 1/2

So writing the equation of the perpendicular line with m₂ =1/2 , point (-4,-3)

will be;

m=Δy/Δx

1/2=y--3/x--4

1/2 = y+3/x+4

x+4 = 2( y+3)

x+4 = 2(y+3)

x+4 =2y+6

x+4-6=2y

x-2=2y

x/2 -2/2=y

y=1/2 x -1   is the equation.

5 0
3 years ago
If 8x + 6 = 3x + 21,
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Answer:

x = 3

Step-by-step explanation:

First, subtract 3x from both sides. That leaves 5x+6=21.

Next, subtract 6 from both sides. That leaves 5x=15.

Lastly, divide by 5 and you get x=3

4 0
3 years ago
a window is shaped like a semicircle and has diameter of 2 feet which expression describes the perimeter in feet of the window
mart [117]

Answer:

5.14 ft

Step-by-step explanation:

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3 years ago
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