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3 years ago

Please help me

Mathematics

1 answer:

Alex Ar [27]3 years ago

4 0

Answer:

The answer is 62.83

Step-by-step explanation: Just do 3.14 times 2 squared or 4 they are the same thing in this context then multiply 5 because that's your height.

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Solve for g. g + 19 = 43 −62−62 −24−24 24 62

daser333 [38]

The answer is C) 24.

24 + 19 = 43.

43 - 24 = 19.

5 0

3 years ago

Two quantities vary inversely. If the value of the first is 15 when the value of the second is 18, find the value of the second

vovikov84 [41]

Answer:

The value of second quantity is 27

Step-by-step explanation:

Inverse variation can be represented by the equation xy=k or $y = \frac{k}{x}$ i.e,

y varies inversely as x , if there is some nonzero constant k such that, xy =k or $y = \frac{k}{x}$ where x≠0 and y≠0.

Given: Two quantities vary inversely.

Let x be the first quantity and y be the second quantity if they vary inversely.

then, by definition of inverse variation;

$y = \frac{k}{x}$ .....[1]

Substitute the value of x=15 and y=18 to solve for k;

$18= \frac{k}{15}$

Multiply both sides by 15 we have;

$15\times 18=15 \times \frac{k}{15}$

Simplify:

k=270

now, find the second quantity y using same method when x=10.

then;

after substituting the value of x=10 and k=270 in [1] ;

$y = \frac{270}{10}$

Simplify:

y= 27

Therefore, the second quantity value i.e,y = 27

7 0

3 years ago

Read 2 more answers

Doris is investigating if height has any effect on red blood cell count. What is the explanatory variable?

sammy [17]

Answer:

a) The number of people that are being studied.

Step-by-step explanation:

1) The (missing) options are:

a) The number of people that are being studied.

b) red blood cell count

c) height

d) none of the above

2) Explanatory variables are synonymical terms for independent variables.

In short when those variables are really not affected by other ones they are also called Explanatory Variables.

It is useful to make a distinction between response variable, and explanatory ones. The first one is affected somehow and it is the response Doris wants to find out.

3) Certainly, the sample or population of this research is absolutely free of prior influence over the final results. Since theoretically, the same research can be done over different samples and find other responses.

Then it's "a"

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3 years ago

She has written 90 page essay so far she needs 150 pages. What percent of pages has she completed.

creativ13 [48]

Answer:

75%

Step-by-step explanation:

i am not going to say it right but i think it is but my teacher have us doing this now

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3 years ago

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In 2010 the population of Brazil was about 1.907×10 to the 8 power. The population of Mexico is about 1.123×10 to the 8 power. A

Romashka [77]

Brazil population: 1.907× $10^{8}$

Mexico population 1.123× $10^{8}$

To find how much more the population was in Brazil than in mexico, you would subtract the Brazil population to Mexico's population:

The $10^{8}$ 's would not cancel out because they are representing further decimal places that aren't written, so you would subtract 1.907 and 1.123.

1.907 - 1.123= 0.784 $10^{8}$

Brazil's population is 0.784× $10^{8}$ larger than Mexico.

6 0

3 years ago