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velikii [3]
3 years ago
11

Rob is travelling at a constant speed in a car. He travels 105km in 1 hour and 30 minutes. The speed limit is 80km/h. Is Rob tra

velling within the speed limit? Show how you decide.​
Mathematics
1 answer:
abruzzese [7]3 years ago
8 0

Answer:

Yes.

Step-by-step explanation:

Let's first convert his speed to km/h.

\frac{105km}{1.5h}  = 70\frac{km}{h} > 80\frac{km}{h}. Therefore, Rob is traveling within the speed limit.

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What is the solution to the equation 1/4x +2= -5/8x - 5
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Answer:

x = -8

Step-by-step explanation:

1/4x +2= -5/8x - 5

Add 5/8x to each side

1/4x +5/8x +2= -5/8x+5/8x - 5

1/4x+5/8x +2=  - 5

Subtract 2 from each side

1/4x+5/8x +2-2=  - 5-2

1/4x+5/8x =  - 7

Get a common denominator

1/4 *2/2 x + 5/8x = -7

2/8x + 5/8x = -7

7/8x = -7

Multiply each side by 8/7

8/7x * 7/8x = -7 *8/7

x = -8

7 0
3 years ago
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Answer:

15x + 40 = 115

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The number of hours times the charge per mile, plus the $40 to rent it, will equal $115.

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Step-by-step explanation:

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