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Vlada [557]
3 years ago
6

 

Mathematics
2 answers:
Misha Larkins [42]3 years ago
8 0

Answer:

It's 130.66, D

Step-by-step explanation:

:)) yw

adoni [48]3 years ago
8 0

Answer:

C. 130.66

Step-by-step explanation:

I just took the assesment and i got it right

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Basile [38]
3x^-2 can be written

3/x^2 because x^-2 is = 1/x^2
3 0
3 years ago
Please help me!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!ASAP
Leona [35]

When the sign is < or > (less than/greater than), you graph an open circle.

When the sign is ≤ or ≥ (less than/greater than <u>or equal to)</u>, you graph a closed circle.

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3 0
2 years ago
Which of the following shows the additive inverse property? 9 + 0 = 9 9 + 1 = 10 9 + (-1) = 8 9 + (-9) = 0
UkoKoshka [18]
9+(-9)=0  you are showing the opposite sign of the number that added together would give you the sum of zero.

5 0
2 years ago
Young children in the United States are exposed to an average of 4.0 hours of background
Norma-Jean [14]

Answer:

The critical value approach and the p-value approach gave the same result.              

Step-by-step explanation:

We are given the following in the question:

Population mean, μ = 4 hours

Sample mean, \bar{x} = 4.5

Sample size, n = 460

Alpha, α = 0.051

Population standard deviation, σ = 1.00 hour

First, we design the null and the alternate hypothesis

H_{0}: \mu = 4.00\text{ hours}\\H_A: \mu > 4.00\text{ hours}

We use One-tailed z test to perform this hypothesis.

Formula:

z_{stat} = \displaystyle\frac{\bar{x} - \mu}{\frac{\sigma}{\sqrt{n}} }

Putting all the values, we have

z_{stat} = \displaystyle\frac{4.5 - 4}{\frac{1}{\sqrt{60}} } = 3.87

Now, z_{critical} \text{ at 0.01 level of significance } = 2.326

Since,  

z_{stat} > z_{critical}

We reject the null hypothesis and accept the alternate hypothesis. Thus, low-income families are exposed to more than 4.0 hours of daily background television.

p value at z-stat 3.87 is 0.000054. Since p-value is less than the significance level. We reject the null hypothesis.

Hence, the critical value approach and the p-value approach gave the same result.

5 0
3 years ago
macy lives 1.15 miles away from her grandmother what fraction represents the distance between macy house and her grandmother​
Katyanochek1 [597]

Answer:

1/15

Step-by-step explanation:

5 0
3 years ago
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