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3 years ago

HELPPP PLEASE!!! I REALLY NEED HELP PLEASE EXPLAIN UR ANSWER ITS DUE SOONNN

Mathematics

1 answer:

Gemiola [76]3 years ago

6 0

Answer:

Step-by-step explanation:

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HELP im behinds on math and need help with this

pav-90 [236]

Answer:

261.7 mm³

Step-by-step explanation:

the volume= ⅓×3.14×5²×10

= ⅓× 785

= 261.7 mm³

6 0

3 years ago

The result of a random survey showed that 40 out of 75 people plan to vote for Mr. Best for a position on the local store school

Anna35 [415]

Answer: 1,600 people

Step-by-step explanation:

The survey showed that 40 out of 75 people would vote for Mr. Best.

Convert this figure to a percentage so that you can use it to find out the number of people that would vote for him if numbers were larger:

= 40 / 75

= 53.33%

If 3,000 people voted, 53.33% would vote for Mr. Best which is:

= 3,000 * 53.33%

= 1,599.9

= 1,600 people

5 0

3 years ago

The slope of a line is 5 /7. What is the slope of any line that is perpendicular to that line?

Lady bird [3.3K]

Answer:

-7/5

Step-by-step explanation:

The slope of a perpendicular line is the "negative reciprocal" of the slope of the original line. so just switch the numbers and put the top number into a negative.

4 0

4 years ago

The population density of the world is calculated by finding the ratio of the total number of people in the world to the area of

Romashka [77]

Answer:

Step-by-step explanation:

A = Surface area of the Earth = $1.5\times 10^8\ \text{km}^2$

Total number of people on Earth = 7.594 billion as of 2018 = $7.594\times 10^9$

We need to find the number of people living in each square km of land area.

So, we need to divide the number of people by the land area of the Earth.

$1.5\times 10^8\ \text{km}^2=7.594\times 10^9\ \text{people}$

$\Rightarrow 1\ \text{km}^2=\dfrac{7.594\times 10^9}{1.5\times 10^8}$

$\Rightarrow 1\ \text{km}^2=50.63\approx 51\ \text{people}$

So, 51 people will inhabit each square km of land area.

5 0

3 years ago

Find the student’s error in solving the following inequality. 31 < –5x + 6 25 < –5x –5 < x

zaharov [31]

Answer:

He subtracted -5 from both sides, not -6

Step-by-step explanation:

The inequality that we have to solve in this problem is

$31$

To solve the inequality, we proceed as follows:

First, we isolate the term in x. To do that, we add -6 on both sides of the inequality, and we find:

$31-6$

So, this is now the new inequality.

Then, we divide both sides of the equation by 5; we get:

$\frac{25}{5}$

Finally, we change sign to the inequality, so we get:

$x$

So, the student's error is that he subtracted -5 from both sides, not -6.

7 0

3 years ago