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2 years ago

Bryan can solve 25 math problems in 30 minutes. At this rate, how many problems can he solve in 1

Mathematics

1 answer:

Ksenya-84 [330]2 years ago

5 0

Answer:

Step-by-step explanation:

25 ----------- 1/2 h (half and hour)

x ------------- 1 h

---------------------------------

25 * 1h = x * 1/2h

25 = x/2

50 = x

he can solve 50 problems in 1 hour

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3 years ago

Can somebody help me with this question?

V125BC [204]

Answer:

$\frac{2}{5}\vec{a}+\vec{b}$

Step-by-step explanation:

$\vec{DE}=\vec{DB}+\vec{BE}$

$=\frac{3}{5}\vec{OB}+\frac{1}{5}\vec{BC}$ $\left\{OD:DB=2:3,BE:EC=1:4\right\}$

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8 0

3 years ago

In one statistics course, students reported studying an average (mean) of 9.92 hours a week, with a standard deviation of 4.54.

quester [9]

Answer:

For the student who is studying 10 hours a week is in the 57.93th percentile.

Step-by-step explanation:

Corresponding z-score for the student who studies 10 hours a week can be calculated by the formula

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3 years ago

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3 years ago