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3 years ago

5

Mathematics

2 answers:

ziro4ka [17]3 years ago

7 0

This question doesn’t make sense

Sloan [31]3 years ago

5 0

I do not know what question you asked..

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Round 3,567 to the nearest ten

WINSTONCH [101]

Answer:3,570

Step-by-step explanation: The 7 is over 5 so u know, 5 or more up the score. 4 percent or less let it rest.

8 0

4 years ago

Read 2 more answers

Another fair dice is rolled 300 times. How many times would you expect it to land with a multiple of three on top? I need help t

ira [324]

Answer:

100 times

Step-by-step explanation:

multiples of 3 on a number cube are 3 and 6

probability of rolling a '3' or '6' is 1/6 + 1/6 = 2/6 or 1/3

1/3 x 300 = 100

7 0

3 years ago

Simplify . (1/c + 1/h)/(1/(c ^ 2) - 1/(r ^ 2))

Marrrta [24]

Answer:

$\frac{\left(h+c\right)cr^2}{h\left(r^2-c^2\right)}$

Step-by-step explanation:

$\frac{\frac{1}{c}+\frac{1}{h}}{\frac{1}{c^2}-\frac{1}{r^2}}$

Combine $\frac{1}{c} + \frac{1}{h}$

$\frac{\frac{h+c}{ch}}{\frac{1}{c^2}-\frac{1}{r^2}}$

Combine the bottom, too.

$=\frac{\frac{h+c}{ch}}{\frac{r^2-c^2}{c^2r^2}}$

Apply the fraction rule

$=\frac{\left(h+c\right)c^2r^2}{ch\left(r^2-c^2\right)}$

Cancel

$=\frac{\left(h+c\right)cr^2}{h\left(r^2-c^2\right)}$

Therefore, $\frac{\left(\frac{1}{c}+\frac{1}{h}\right)}{\left(\frac{1}{\left(c^2\right)}-\frac{1}{\left(r^2\right)}\right)}:\quad \frac{\left(h+c\right)cr^2}{h\left(r^2-c^2\right)}$

5 0

3 years ago

Sylvester says that 0.000002015 written in scientific notation is 2.015 x 10 by the power of 6. Do you agree with him? Explain w

Marrrta [24]

Answer:

$0.000002015$ is not equal to $2.015x10^6$

Step-by-step explanation:

When a power of 10 is positive the dot must be moved to the right, and when the power of 10 is negative, the dot must be moved to the left.

For example $50.000x10^3=50000$ and $45.00x10^{-3}=0.045$

$2.015x10^6=2,015,000$

wich is clearly not equal to 0.000002015

the correct scientific notation for 0.000002015 must be:

$2.015x10^{-6}$

With a negative in the power of 10, referring to a small quantity.

3 0

3 years ago

A construction company needs to remove 2 1/6 tons of dirt from a construction site. They can remove 7/8 tons of dirt each hour.

raketka [301]

The answer is 4.

Hope I helped :)

3 0

3 years ago