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3 years ago

Which number should each side of the equation 4/5x=8 be multiplied by too produce the equivalent equation of x= 10

Mathematics

1 answer:

Mariulka [41]3 years ago

5 0

5/4 because 4/5x * 5/4 = x and 8 * 5/4 = 10

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(10+2-8)2-5 Evaluate if necessary.

bixtya [17]

Answer is 3. You have to do what’s in the parentheses first: 10+2-8=4. Then multiply 4 • 2 = 8 and then finally subtract: 8-5=3

4 0

2 years ago

Using the simple random sample of weights of women from a data set, we obtain these sample statistics: nequals45 and x overbar

Tomtit [17]

Answer: (141.1, 156.48)

Step-by-step explanation:

Given sample statistics : $n=45$

$\overline{x}=148.79\text{ lb}$

$\sigma=31.37\text{ lb}$

a) We know that the best point estimate of the population mean is the sample mean.

Therefore, the best point estimate of the mean weight of all women = $\mu=148.79\text{ lb}$

b) The confidence interval for the population mean is given by :-

$\mu\ \pm E$ , where E is the margin of error.

Formula for Margin of error :-

$z_{\alpha/2}\times\dfrac{\sigma}{\sqrt{n}}$

Given : Significance level : $\alpha=1-0.90=0.1$

Critical value : $z_{\alpha/2}=z_{0.05}=\pm1.645$

Margin of error : $E=1.645\times\dfrac{31.37}{\sqrt{45}}\approx 7.69$

Now, the 90% confidence interval for the population mean will be :-

$148.79\ \pm\ 7.69 =(148.79-7.69\ ,\ 148.79+7.69)=(141.1,\ 156.48)$

Hence, the 90% confidence interval estimate of the mean weight of all women= (141.1, 156.48)

3 0

2 years ago

H/3+h/6=1 how many hours will it take them to mow their lawn a.6 b.3 c.2 d.1

Furkat [3]

Answer:

c 2

Step-by-step explanation:

h/3 + h/6 =1

Multiply both sides by 6 to eliminate the fractions

6(h/3+h/6) = 1*6

2h +h =6

Combine like terms

3h = 6

Divide by 3

3h/3 = 6/3

h =2

2 hours

8 0

2 years ago

Solve -5y+6=-9 pls help me with this

alexandr402 [8]

Answer:

-5y + 6 = -9

y = 3

Step-by-step explanation:

subtract 6 from both sides

-5y + 6 - 6 = -9 - 6

simplify

-5y = -15

divide both sides by -5

(-5y)/5 = (-15)/5

simplify

y = 3

6 0

2 years ago

The lynch family bought a house for $75,300.a few year later, they sold the house for $80,250.how much greater was the selling p

Doss [256]

You take away from them so your answer will be 4,950

hope this help you with your question~~~~

love

meowlover

4 0

3 years ago