What is 5% of 82?! i need answer asap!!!!!!!!

Mathematics

1 answer:

Digiron [165]3 years ago

5 0

<h3>Answer is 4.1</h3>

To get this answer, multiply 0.05 by 82

The 0.05 is the decimal form of 5%

You move the decimal point 2 spots to the left to go from percent form to decimal form.

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Simplify this expression.<br><br> 4^8 / 4^4

kolbaska11 [484]

4^4 because of exponent laws.

When you divide two exponents that is attached to the same base (4), you need to subtract exponents (8-4=4)

4^4 = 256

65536 / 256 = 256
(4^8) (4^4)

7 0

4 years ago

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What steps should be followed to solve the inequality -4x < 8.

monitta

Answer:

Divide by -4 on each side and flip the sign. Can you give brainliest???

Step-by-step explanation:

You have to divide -4 into both sides in order to isolate the variable. Then flip the sign because you are dividing by a negative number. Whatever you do on one side, you also do to the other.

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3 years ago

An electric pole is 10m high if it's shadow is 10×√3 in length find the elevation ofthe sum

lianna [129]

First, Look at the attached picture as a reference.

Now, using Pythagoras theorem,

$AC^2=AB^2+BC^2 \\\\AC=\sqrt{AB^2+BC^2 }\\\\AC=\sqrt{10^2+(10\sqrt3)^2}\\\\ AC = \sqrt{100+300}\\\\AC=\sqrt{400}\\\\AC=20~in.$

Now, lets find the elevation of the sun.

<span> </span> $tan\theta = \frac{AB}{BC} \\\\ tan\theta = \frac{10}{10\sqrt3} \\\\ \theta = tan^{-1} \left(\frac{10}{10\sqrt3}\right) \\\\ \boxed{\theta = 30 \°}$

∴ The elevation of the sun is 30°