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3 years ago

Someone knows it, I take help

Mathematics

1 answer:

Nezavi [6.7K]3 years ago

6 0

Answer:

5a^2 + 7a

Step-by-step explanation:

Combine like terms

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A cylindrical barrel has a diameter of 19.875 inches.Estimate the circumference of the barrel in feet?

viktelen [127]

The best estimate for the circumference of a 19.875 diameter barrel would be 5ft.

Answer: 5ft

~Lillyprince

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3 years ago

Estimate the fractional part of the shaded portions below. Explain how you decided

zloy xaker [14]

Answer:

do you have a picture?

8 0

4 years ago

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If the measure of an angle is 13, find the measure of its supplement

WITCHER [35]

An angle added with it's supplement is 180.

Knowing this: 180 - 13 = 167

It's supplement is 167

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3 years ago

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There are some people in a cinema.

Elan Coil [88]

Answer:

$Adults = 510$

Step-by-step explanation:

Given

$Children = \frac{3}{5}$

$Girls:Boys = 2 : 7$

$Girls = 170$

Required

Determine the number of adults

First, we need to calculate the number of children

$Girls:Boys = 2 : 7$

Given that: $Girls = 170$

Substitute 170 for Girls in $Girls:Boys = 2 : 7$

$170 : Boys = 2 : 7$

Convert to fraction

$\frac{170}{Boys} = \frac{2}{7}$

Cross Multiply

$Boys * 2 = 170 * 7$

Divide both sides by 2

$Boys = \frac{170 * 7}{2}$

$Boys = \frac{1190}{2}$

$Boys = 595$

So, the number of children are:

$Children = Boys + Girls$

$Children = 595 + 170$

$Children = 765$

Next, we calculate the number of people in the cinema.

$Children = \frac{3}{5} * People$

Substitute 765 for Children

$765 = \frac{3}{5} * People$

Make People the subject.

$People = \frac{765 * 5}{3}$

$People = \frac{3825}{3}$

$People = 1275$

If 3/5 are children, then 2/5 are adults.

So:

$Adults = \frac{2}{5} * 1275$

$Adults = \frac{2* 1275}{5}$

$Adults = \frac{2550}{5}$

$Adults = 510$

7 0

3 years ago

Check all of the answers that are in the solution set of the inequality.

blsea [12.9K]

Well, plug in all the values.

(sqrt)3>3

False. 3 would be more than it's square root.

(sqrt)9>3
3>3

This is false. 3 is not bigger than 3. They are equal.

(sqrt)15>3

3.8729..... >3

That is true,

(sqrt)10>3

3.1622>3

This true.

-3 and 0 would not work either.

So,

"C" and "D" are correct solutions.

I hope this helps!
~kaikers

7 0

4 years ago