3 years ago

The mean of four numbers is 70. The mean increases to 80 when a fifth number is added. What is the fifth number?

Mathematics

1 answer:

irga5000 [103]3 years ago

7 0

The fifth number is 90

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3 years ago

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garri49 [273]

Answer:

The area of the regular hexagon is $166.3\ units^{2}$

Step-by-step explanation:

we know that

The area of a regular hexagon can be divided into 6 equilateral triangles

step 1

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$A=\frac{1}{2}(b)(h)$

we have

$b=r=8\ units$

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substitute

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3 years ago

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Sloan [31]

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Step-by-step explanation:

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3 years ago

Evaluate each expression. Order of operations<br> 1) (-2)+(5 + 5)2

Virty [35]

Answer:

Step-by-step explanation:

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3 years ago

What number is 25% of 60?

nekit [7.7K]

25% of 60 is 15$ or just 15

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3 years ago

Read 2 more answers