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Elza [17]
3 years ago
10

Gavin and Jim are marking exam papers. Each set takes Gavin 48 minutes and Jim 1 hour. Express the times Gavin and Jim take as a

ratio. Give your answer in its simplest form.
Mathematics
1 answer:
murzikaleks [220]3 years ago
4 0

Answer:

4:5

Step-by-step explanation:

1HR=60 MIN

48 MIN - 60MIN

48/60=4/5

4/5=4:5

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Answer:

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Step-by-step explanation:

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Elliot's employer pays time-and-a-half for all hours worked over 40 hours per week. Elliot's regular hourly rate is $9 per hour.
musickatia [10]
E=9h+1.5(9)(h-40)

e=9h+13.5(h-40), since h=49

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3 years ago
Need Help with 44.. picture above
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Answer:

Ok:

Step-by-step explanation:

I see that you set up 90 miles = 60 mph * t, where you found out that t = 1.5. What what you needed to do was set 180 miles = 45 mph * t. This is because it is 45 mph for the <em>whole</em> trip. Then, you find that t = 4 hours. That that means that he spent 2.5 hours driving back. Then, we can do d=vt and find 90/2.5 as the speed he went home at. Which comes out to be 36 mph.

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3 years ago
What would the variables for a and b be? 3/x + 5/x^2 = (ax+b)/x^2
allsm [11]

Answer:

a=3,b=5

Step-by-step explanation:

\frac{3}{x}  +  \frac{5}{ {x}^{2}  }  \\  =  \frac{3x}{ {x}^{2} }   +  \frac{5}{ {x}^{2} }  \\  =  \frac{3x + 5}{ {x}^{2} }

so as you got it:

\frac{(ax + b)}{ {x}^{2} }  =  \frac{3x + 5}{ {x}^{2} }  \\ a = 3 \\ b = 5

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