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meriva
3 years ago
12

Explain what is 90% of 180

Mathematics
1 answer:
Yakvenalex [24]3 years ago
4 0

Answer:

The answer is 162.

Step-by-step explanation:

To find the percentage of a number:

Turn the percentage into a decimal. 90% to .90

Multiply the decimal by the number you want to find the percentage of. .90 x 180

The answer is the product.

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<h2><u>question 1</u></h2>

n^{2} - 20n -96 = 0

use product and sum method

product = -96

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<h2><u>Question 2 </u></h2>

<u />x^{2} + 12 x = 48<u />

in the form ax^{2}  +bx +c = 0

= x^{2} +12x - 48

make use of the formula :

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replace values to make 2 equations :

1.\frac{-12+\sqrt{12^{2} -4*1*-48} }{2*1} = 3.17

2.\frac{-12-\sqrt{12^{2} -4*1*-48} }{2*1} = -15.2

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<h2><u>Question 3 </u></h2>

<u />x^{2} -14x+40=0<u />

use product and sum method

product = 40

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<u />

<h2><u>Question 4 </u></h2>

<u />5b^{2} -20b-18 = 7<u />

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