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3 years ago

What is 45% of 90 ?

Mathematics

2 answers:

Liula [17]3 years ago

4 0

Answer:

40.5

Step-by-step explanation:

This answer makes sense because we know that 50% of 90 is 45.

Since 45% of 90 is 40.5, we can self-check our answer.

Hope I helped!

~PumpkinSpice1♥

sergij07 [2.7K]3 years ago

4 0

Answer:

40.5

Step-by-step explanation:

1. Convert 45% into a decimal.

45%= .45

2. Multiply .45 by 90.

.45x90= 40.5

Your answer is 40.5.

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vladimir1956 [14]

Answer:

StartFraction StartRoot 3 EndRoot Over 3 EndFraction

Step-by-step explanation:

see the attached figure to better understand the problem

step 1

we know that

In the right triangle XYZ

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substitute the values

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Remember that

$cos(30\°)=\frac{\sqrt{3}}{2}$

substitute

$\frac{\sqrt{3}}{2}=\frac{ZY}{4}$

$ZY=(4)\frac{\sqrt{3}}{2}$

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step 2

$sin(Y)=\frac{XZ}{XY}$ --> opposite side divided by the hypotenuse

substitute the values

$sin(30\°)=\frac{XZ}{4}$

Remember that

$sin(30\°)=\frac{1}{2}$

$\frac{1}{2}=\frac{XZ}{4}$

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step 3

$tan(Y)=\frac{XZ}{ZY}$ --> opposite side divided by adjacent side

substitute the values

$tan(Y)=\frac{2}{2\sqrt{3}}$

$tan(Y)=\frac{1}{\sqrt{3}}$

Simplify

$tan(Y)=\frac{\sqrt{3}}{3}$

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3 years ago

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Answer:

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4 years ago

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zhuklara [117]

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*Note the ">" sign is similar to the "=" sign.

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3 years ago

What is 45% of 90￼ ?

What is 45% of 90 ?