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4 years ago

What is the average of 80 and 31?

Mathematics

1 answer:

MArishka [77]4 years ago

5 0

Avg equals = VALUE1 + VALUE2 / 2

so avg = 80+31 /2

avg = 55.5

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Solve square root equation. <br><br> 2x^2-2=-12

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Answer:

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3 years ago

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What is 8.675 as a mixed number in simplified formation

7nadin3 [17]

8 675/1000

8 27/40

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3 years ago

HELP FAST WILL MARK BRAINLIEST

amid [387]

Answer:

$\$1,282.28$

Step-by-step explanation:

we know that

The compound interest formula is equal to

$A=P(1+\frac{r}{n})^{nt}$

where

A is the Final Investment Value

P is the Principal amount of money to be invested

r is the rate of interest in decimal

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n is the number of times interest is compounded per year

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3 years ago

What if the simplest form of the radical expression?

patriot [66]

Answer:

$\large\boxed{\dfrac{\sqrt2+\sqrt5}{\sqrt2-\sqrt5}=-\dfrac{7+2\sqrt{10}}{3}}$

Step-by-step explanation:

$\text{Use}\ (a-b)(a+b)=a^2-b^2\ \text{and}\ (a+b)^2=a^2+2ab+b^2\\\\\\\dfrac{\sqrt2+\sqrt5}{\sqrt2-\sqrt5}=\dfrac{\sqrt2+\sqrt5}{\sqrt2-\sqrt5}\cdot\dfrac{\sqrt2+\sqrt5}{\sqrt2+\sqrt5}=\dfrac{(\sqrt2+\sqrt5)^2}{(\sqrt2)^2-(\sqrt5)^2}\\\\=\dfrac{(\sqrt2)^2+2(\sqrt2)(\sqrt5)+(\sqrt5)^2}{2-5}=\dfrac{2+2\sqrt{(2)(5)}+5}{-3}\\\\=-\dfrac{7+2\sqrt{10}}{3}$

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4 years ago

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7nadin3 [17]

Answer:

Step-by-step explanation:

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3 years ago