3 years ago

Which promblem can be solved using 3 times 7=21

Mathematics

1 answer:

Eddi Din [679]3 years ago

8 0

Answer:

21/7= 3

Step-by-step explanation:

When we multiply 3 into 7 we get 21 .

Hence by the multiplication method, we get our answer.

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Aileen worked 35.5 hours last week. She earns $7.75 per hour. How much money did she make last week.

andrezito [222]

Answer:

275.125

Step-by-step explanation:

just multiply 35.5 with 7.75 and theres your answer

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3 years ago

What are the possible lengths for x, the third side of a triangle, if two sides are 21 and 10

SashulF [63]

To solve we need to use Pythagoras theorem ( $a^{2} + b^{2} = c^{2}$ )

There are 2 possible lengths for x: hypotenuse or one of the 2 shorter sides.

Hypotenuse:
10^{2} + 21^2 = $x^{2}$
100+441= $x^{2}$
$\sqrt{541} = \sqrt{ x^{2} }$
23.3≈x

Shorter leg:
$10^2 + x^2=21^2$
$x^2= 21^2-10^2$
$x^{2}$ = 441-100
$\sqrt{ x^{2} } = \sqrt{341}$
x≈18.47

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3 years ago

A tennis court is 24 m long and 11 m wide. What is the perimeter of a tennis court? A. 78 m B. 70 m C.264 m D.35 m

scoundrel [369]

The answer is B..........................................................

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3 years ago

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In a division of a company, 15% of the women and 25% of the men are working on a project. 60% of the division are women. what pe

lord [1]

19%
In the division, 60% are women and 100%-60% = 40% are men. And for this project, we have 15% of the women, or 15%*60% = 9% of the personal and 25% of the men or 25% * 40% = 10% of the personal working on the project. Therefore 9% + 10% = 19% of the division is working on the project.

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3 years ago

What percentage is 28 min of 3 h. <br><br> Plssss explain too!!

Olegator [25]

Answer:

it's 15.5555555556%

Step-by-step explanation:

$28 \: min \: of \: 3h$