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3 years ago

Find the value of r in the triangle shown below.

Mathematics

1 answer:

lisabon 2012 [21]3 years ago

4 0

Answer:

(A) Square root of 65

Step-by-step explanation:

We can use Pythagorean Theorem for this, as a^2 + b^2 = c^2, that means:

4^2 + 7^2 = x^2, so 16 + 49 = x^2, add 16 and 49 and you get 65. Remember though, x was squared, so we have to find the square root of 65. Making it the square root of 65 or (A) the answer.

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LaTeX: \sqrt[]{36} 36 2) LaTeX: \sqrt[3]{-8} − 8 3 3) LaTeX: -\sqrt[]{100} − 100 4) LaTeX: \sqrt[3]{27} I'm sorry that's the bes

Mamont248 [21]

Given:

Consider the expression are

1) $\sqrt{36}$

2) $\sqrt[3]{-8}$

3) $-\sqrt{100}$

4) $\sqrt[3]{27}$

To find:

The simplified form of each expression.

Solution:

1. We have,

$\sqrt{36}=\sqrt{6^2}$

$\sqrt{36}=6$

Therefore, the value of this expression is 6.

2. We have,

$\sqrt[3]{-8}=(-8)^{\frac{1}{3}}$

$\sqrt[3]{-8}=((-2)^3)^{\frac{1}{3}}$

$\sqrt[3]{-8}=(-2)^{\frac{3}{3}}$

$\sqrt[3]{-8}=-2$

Therefore, the value of this expression is -2.

3. We have,

$-\sqrt{100}=-\sqrt{10^2}$

$-\sqrt{100}=-10$

Therefore, the value of this expression is -10.

4. We have,

$\sqrt[3]{27}=(27)^{\frac{1}{3}}$

$\sqrt[3]{27}=(3^3)^{\frac{1}{3}}$

$\sqrt[3]{27}=(3)^{\frac{3}{3}}$

$\sqrt[3]{27}=3$

Therefore, the value of this expression is 3.

3 0

4 years ago

20% of 150 is what number?

tensa zangetsu [6.8K]

Answer=30

20%=20/100=0.2

150*.20=30

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