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3 years ago

Ten times the square of a nonzero number is equal to forty times the number. what is the number?

1 answer:

5 0

For the answer to the question, what is tTen times the square of a nonzero number is equal to forty times the number10∗x2=40xthe question's statementx2−4x=0simplifyx(x−4)=0factor out an x x=0,x=4 the two solutions

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The ratio of red cars to blue cars in a parking lot was 8 : 7. If there were 48 red cars, how many blue cars were there?

shutvik [7]

What you need to do is multiply both sides by the same number. If 8 times 6 is 48, then 7 times 6 is your answer.

8 0

3 years ago

Use technology and the given confidence level and sample data to find the confidence interval for the population mean mu. Assume

Sphinxa [80]

Answer: (1.55, 6.45)

Step-by-step explanation:

The confidence interval for population mean is given by :-

$\overline\ {x}\pm\ z_{\alpha/2}\dfrac{\sigma}{\sqrt{n}}$

Given : Significance level : $\alpha: 1-0.99=0.01$

Critical value : $z_{\alpha/2}=2.576$

Sample size : n=41

Sample mean : $\overline{x}=4.0\text{ kg}$

Standard deviation : $\sigma=6.1\text{ kg}$

Then, 99% confidence interval for population mean will be :_

$4\pm\ (2.576)\dfrac{6.1}{\sqrt{41}}\\\\\approx4\pm2.45\\\\=(4-2.45, 4+2.45)=(1.55, 6.45)$

8 0

3 years ago

Which number has the least absolute value?

8090 [49]

A.

Explanation: The bigger the negative number, the lower the number actually is.

4 0

2 years ago

2x^2-21x-36. Can someone help me out?

sergeinik [125]

-752thatswhat the answer should be

8 0

2 years ago

Read 2 more answers

9x2/3 help due in 3 min

sattari [20]

Answer:

Step-by-step explanation:

9/1 × 2/3

(9 × 2 = 18)

(1 × 3 = 3)

18 ÷ 3 = 6

7 0

2 years ago