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Alona [7]
3 years ago
15

5(-7)+9(4) I am confused on this problem

Mathematics
2 answers:
amm18123 years ago
5 0

Answer:

the answer is 1

Step-by-step explanation:

Rama09 [41]3 years ago
4 0

Answer:

It's really easy, just need to multiply and add the symbol of the multiplication, the answer is: 1

-35+36=1

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An amusement park would like to determine if they want to add in a new roller coaster. In order to decide whether or not they sh
Rzqust [24]

Using the z-distribution, it is found that the 90% confidence interval is given by: (0.6350, 0.6984).

<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 90% confidence level, hence\alpha = 0.9, z is the value of Z that has a p-value of \frac{1+0.9}{2} = 0.95, so the critical value is z = 1.645.

The sample size and the estimate are given by:

n = 600, \pi = \frac{400}{600} = 0.6667

Hence, the bounds of the interval are given by:

\pi - z\sqrt{\frac{\pi(1-\pi)}{n}} = 0.6667 - 1.645\sqrt{\frac{0.6667(0.3333)}{600}} = 0.6350

\pi + z\sqrt{\frac{\pi(1-\pi)}{n}} = 0.6667 + 1.645\sqrt{\frac{0.6667(0.3333)}{600}} = 0.6984

The 90% confidence interval is given by: (0.6350, 0.6984).

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

#SPJ1

5 0
2 years ago
What are x and 8 in this lineat equation? 8/x+5=50/25
MatroZZZ [7]

Answer:

x= -8/3

Step-by-step explanation:

4 0
3 years ago
Please help with this problem
Kazeer [188]

In this case the chords are congruent.


x = 7 + 7 = 14

3 0
3 years ago
Read 2 more answers
Need help ASAP will give Brainly!
elena-14-01-66 [18.8K]
I believe the zeros are the x intercept. which makes the answer, 1 & 3.
3 0
3 years ago
HELP PLEASEE:(((((( THANk YOU
alina1380 [7]

Answer:

<em>(C). g(x) = ( </em>\frac{1}{4}<em> x )² </em>

Step-by-step explanation:

The correct answer is <em>(C). g(x) = ( </em>\frac{1}{4}<em> x )²</em>

7 0
2 years ago
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