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AnnyKZ [126]
3 years ago
6

Help?... 1/3(-3) + 13

Mathematics
2 answers:
ra1l [238]3 years ago
7 0

Answer: 12

Step-by-step explanation:

Veronika [31]3 years ago
3 0

Answer:

12

Step-by-step explanation:

1/3(-3)=-1

-1+13=12

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F(x) = -2(x + 2)2 + 4
USPshnik [31]

Answer:

4x4=?        then we have 2x2=?

Step-by-step explanation: H-JJ-

7 0
2 years ago
Five members of the soccer team and five members of the track team ran the 100-meter dash. Their times are listed in the table b
viva [34]
The last one....0.74
5 0
3 years ago
Read 2 more answers
Help now fast..................................
Yuliya22 [10]

Answer:

C

Step-by-step explanation:

There are 6 units in the numberline, and 2 are shaded. So, 2/6 are shaded.

8 0
2 years ago
Number when multiplied by 0.5?<br> Which number produces a rational
Vladimir79 [104]
I don’t really know what your asking but anything multiplied by 0.5 or .5 is going to be half of that number
Example 2•.5=1

I don’t know if this is what you were asking, but I hope this helps
6 0
2 years ago
A random sample of 864 births in a state included 426 boys. Construct a 95% confidence interval estimate of the proportion of bo
oksian1 [2.3K]

Using the z-distribution, it is found that the 95% confidence interval is (0.46, 0.526), and it does not provide strong evidence against that belief.

<h3>What is a confidence interval of proportions?</h3>

A confidence interval of proportions is given by:

\pi \pm z\sqrt{\frac{\pi(1-\pi)}{n}}

In which:

  • \pi is the sample proportion.
  • z is the critical value.
  • n is the sample size.

In this problem, we have a 95% confidence level, hence\alpha = 0.95, z is the value of Z that has a p-value of \frac{1+0.95}{2} = 0.975, so the critical value is z = 1.96.

We have that a random sample of 864 births in a state included 426 boys, hence the parameters are given by:

n = 864, \pi = \frac{426}{864} = 0.493

Then, the bounds of the interval are given by:

\pi - z\sqrt{\frac{\pi(1-\pi)}{n}} = 0.493 - 1.96\sqrt{\frac{0.493(0.507)}{864}} = 0.46

\pi + z\sqrt{\frac{\pi(1-\pi)}{n}} = 0.493 + 1.96\sqrt{\frac{0.493(0.507)}{864}} = 0.526

The 95% confidence interval estimate of the proportion of boys in all births is (0.46, 0.526). Since the interval contains 0.506, it does not provide strong evidence against that belief.

More can be learned about the z-distribution at brainly.com/question/25890103

4 0
2 years ago
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