3 years ago

What is the positive solution to this equation? 4x2 + 12x = 135

Mathematics

1 answer:

Svet_ta [14]3 years ago

3 0

Answer:

x = 9/2 - 15/2

Step-by-step explanation:

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Americans who are 65 years of age or older make up 12.9% of the total population. If there at 30.3 million american in this age

telo118 [61]

Total population of US is 234.88 million.

Step-by-step explanation:

Given,

Number of people are 65 or older = 30.3 million

This represents 12.9% of total population.

Let,

x represent the total population.

12.9% of x = 30.3 million

$\frac{12.9}{100}x=30.3\ million\\0.129x=30.3\ million$

Dividing both sides by 0.129x

$\frac{0.129x}{0.129}=\frac{30.3}{0.129}\ million\\\\x=234.88\ million$

Total population of US is 234.88 million.

Keywords: percentage, division

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5 0

3 years ago

What is the positive solution to this equation? 4x2 + 12x = 135​

What is the positive solution to this equation? 4x2 + 12x = 135