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2 years ago

For what values of x is x2-36=5x true?

Mathematics

2 answers:

Inessa05 [86]2 years ago

6 0

Answer:

X = -12

Step-by-step explanation:

x2-36=5x

take away 2x from both sides

-36=3x

divide both sides by 3

X = -12

katrin2010 [14]2 years ago

3 0

Answer:

x=-12

Step-by-step explanation:

x2-36=5x

add 36 to both sides

x2=5x+36

subtract 5x from both sides

x(-3)=36

divide both sides by -3

x=-12

substitute to prove right

(-12)2-36=5(-12)

-24-36=-60

-60=-60

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2 years ago

A pair of boots marked for $25 was sold at $15. What was the

patriot [66]

Answer:

40%

Step-by-step explanation:

Original price: $25

Discounted price: $15

Amount of discount: $25 - $15 = $10

The boots sold for $10 less than the original price.

To find the percent discount, we need to find what percent of $25 is $10.

percent = part/whole * 100%

percent = 10/25 * 100%

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5 0

2 years ago

Andrew and Ryan spend a total of $44 at a state fair. There is an entrance fee of x dollars per person, and each ride costs $3.5

olya-2409 [2.1K]

N represent the number of rides each of them took

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3 years ago

Read 2 more answers

Liam earns 7.50 an hour his benefits package is equal to 25 percent of his hourly wages when you include that valid if his benef

IgorC [24]

Answer:

Liam earns $9.375 per hour

Step-by-step explanation:

<em>The given information is</em>

Lima earns $7.50 per hour
His benefits package is 25% of his hourly wages

We need to find his hourly wages when his benefits package is included

Assume that he earns 100% per hour

∵ He earns 100% per hour

∵ His benefits package is 25% of his hourly wages

→ Add 25% to 100% to find his total hourly wages

∴ He will earn = 100% + 25% = 125% of his hourly wage

→ Find the value of 125% of his hourly earn

∵ 125% of 7.50 = $\frac{125}{100}$ × 7.50 = 9.375

∴ His hourly earns = $9.375

Liam earns $9.375 per hour

8 0

2 years ago

After constructing a confidence interval estimate for a population mean, you believe that the interval is useless because it is

choli [55]

Answer:

a. increase the sample size

Step-by-step explanation:

The width of a confidence interval is twice the margin of error, which is given by:

$M = z*\frac{\sigma}{\sqrt{n}}$

In which $\sigma$ is the standrd deviation of the population, n is the size of the sample, and z is the confidence coefficient(the higher the confidence level, the higher z is).

The only of those variables which is direct proportional to M is the sample size. This means that if we want to decrease the width of M, we need to increase the sample size.

So the correct answer is:

a. increase the sample size

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2 years ago