2 years ago

Sam can solve 30 multiplication problems in 2 mins. How many can he solve in 20 mins.

2 answers:

8 0

To find the answer using unit rates, you do 30 divided by 2 which is 15/1. Then do 15*20 which is 300. So he can do 300 problems in 20 minutes.

6 0

To get to 20 minutes from 2 minutes you multiply by 10, do the same to the 30 problems to get 300. The answer is 300 problems in 20 minutes.

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ikadub [295]

Answer:

Should be 38.28

Step-by-step explanation:

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2 years ago

Helga [31]

Answer:

It is 50 cm squared hxb/2=a

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2 years ago

Eduardwww [97]

$d_f=d_i+v_0t+\dfrac{1}{2}at^2 \\d_f-d_i-\dfrac{1}{2}at^2=v_0t \\v_0=\boxed{\dfrac{d_f+d_i-\frac{1}{2}at^2}{t}} \\$

Hope this helps.

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2 years ago

Anna [14]

$38.05 or more because you need a minimum of $38.10

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2 years ago

m_a_m_a [10]

Shouldn;t it be 540?

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2 years ago