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Free_Kalibri [48]
3 years ago
5

Lin ride her bike 20 miles in 15 minutes. If she rode at constant speed what is the unit rate and how do you know ?

Mathematics
1 answer:
Varvara68 [4.7K]3 years ago
6 0
v=\frac{d}{t} \ \ \where: v=spped \ \ \ d=distane \ \ \ \ t=time\\
\\
\boxed{v=\frac{20 \ mi}{\frac{1}{4} \ h}=20*4=80 \ mi/h}
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Help!!!
Artyom0805 [142]

Answer:

  C:  y+7=2/5(x+4)

Step-by-step explanation:

The point-slope form of the equation of a line with slope m through point (h, k) is ...

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You are given m=2/5 and (h, k) = (-4, -7). Put these numbers into the form and simplify the signs:

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3 years ago
During the worst periods of hyperinflation in a certain country, the price of food increased at a rate of 30% per month. State w
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Answer:

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Step-by-step explanation:

First, this scenario is exponential, because the price of food is increasing with a percentage, based on the price that it was the previous amount.

Next, to find what the bill will be in 3 months, an equation needs to be made representing the situation.

Use the standard exponential equation: y = ab^x, where a is the initial amount, b is the growth rate, and x is the amount of time.

Plug in the values we know:

y = 130(1.3)^3

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3 years ago
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mafiozo [28]

Answer:

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we know that

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3 years ago
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vesna_86 [32]
The answer is 12.4 :)


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3 years ago
Read 2 more answers
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