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2 years ago

15

A student can solve 12 math problems in 45 minutes. How long will it take the student to complete 20 problems if all the problem

s take the same amount of time?

1 answer:

Alekssandra [29.7K]2 years ago

7 0

Answer:

75min or 1 hour 15min

Step-by-step explanation:

45/12 = 3.75min per problem

3.75 x 20 = 75min or 1 hour 15min

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3 years ago

A number,n,is multiplied by -5/8. The product is -0.4. What is the value of n?

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3 years ago

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3 years ago

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3 years ago

Use linear approximation to approximate √25.3 as follows.

Sophie [7]

The idea is to use the tangent line to $f(x)=\sqrt x$ at $x=25$ in order to approximate $f(25.3)=\sqrt{25.3}$ .

We have

$f(x)=\sqrt x\implies f(25)=\sqrt{25}=5$

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so the linear approximation to $f(x)$ is

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Hence $m=\frac1{10}$ and $b=\frac92$ .

Then

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3 years ago