1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Shalnov [3]
3 years ago
12

Please helppp don’t understand

Mathematics
2 answers:
Vinvika [58]3 years ago
8 0
Use use photomath just take a picture and get the answer download it in the Play Store
siniylev [52]3 years ago
3 0

Answer:

2 raise to -9

Step-by-step explanation:

use the formula a raise to m the whole to raise to n, in such case multiply the powers

You might be interested in
Please help me it’s due today!
shepuryov [24]

Answer:

Check explanation

Step-by-step explanation:

\frac{3(x+2)}{3(x+3)(x+3)}*\frac{(x+3)(x-4)}{(x+2)(x-2)}

3 0
3 years ago
Golf course designer Roberto Langabeer is evaluating two sites, Palmetto Dunes and Ocean Greens, for his next golf course. He wa
Alex787 [66]

Answer:

a) Null hypothesis:\mu_{1} \leq \mu_{2}

Alternative hypothesis:\mu_{1} > \mu_{2}

b) z_{crit}=2.33

And since the calculated value is lower than the critical value we have enough evidence at 0.01 of significance to FAIL to reject the null hypothesis.

Step-by-step explanation:

Part a

A hypothesis is defined as "a speculation or theory based on insufficient evidence that lends itself to further testing and experimentation. With further testing, a hypothesis can usually be proven true or false".  

The null hypothesis is defined as "a hypothesis that says there is no statistical significance between the two variables in the hypothesis. It is the hypothesis that the researcher is trying to disprove".

The alternative hypothesis is "just the inverse, or opposite, of the null hypothesis. It is the hypothesis that researcher is trying to prove".

We want to test this:

Null hypothesis:\mu_{1} \leq \mu_{2}

Alternative hypothesis:\mu_{1} > \mu_{2}

Part b

Golf course designer Roberto Langabeer is evaluating two sites, Palmetto Dunes and Ocean Greens, for his next golf course. He wants to prove that Palmetto Dunes residents (population 1) play golf more often than Ocean Greens residents (population 2). Roberto commissions a market survey to test this hypothesis. The market researcher used a random sample of 64 individuals from each suburb, and reported the following:  X 1 = 15  times per month and  X 2 = 14  times per month. Assume that  σ 1 = 2  and  σ 2 = 3 . With  α = .01 , the critical z value is _____.

Data given and notation

\bar X_{1}=15 represent the mean for the sample 1

\bar X_{2}=14 represent the mean for the sample 2

\sigma_{1}=2 represent the population deviation for 1

\sigma_{2}=3 represent the population deviation for 2

n_{1}=64 sample size selected for 1

n_{2}=64 sample size selected for 2

\alpha=0.01 represent the significance level for the hypothesis test.

z would represent the statistic (variable of interest)

p_v represent the p value for the test (variable of interest)

The statistic is given by:

z=\frac{\bar X_{1}-\bar X_{2}}{\sqrt{\frac{\sigma^2_{1}}{n_{1}}+\frac{\sigma^2_{2}}{n_{2}}}}     (1)

z=\frac{15-14}{\sqrt{\frac{2^2}{64}+\frac{3^2}{64}}}}=2.22  

In order to find the critical value we need a value that accumulates 0.01 of the area on the right tail, since we are conducting a right tailed test. And the critical value is:

z_{crit}=2.33

And since the calculated value is lower than the critical value we have enough evidence at 0.01 of significance to FAIL to reject the null hypothesis.

8 0
2 years ago
Convert 330 degrees to radians. Plz help
geniusboy [140]
5.7595. i am not sure if i’m correct but it is the rounded version.
7 0
2 years ago
The distance from Elena's chin to the top of her head is 150 mm in an imag
ollegr [7]

The height of the image of the ditance from Elena's chin to her head after it has been scaled 80% 3 times is 76.8 mm

<h3>What is the height of the image after it has been scaled?</h3>

When an image is scaled, it means that its dimensions have been reduced by a certain percentage. In this question, the image is reduced by 80%.

The height of the image after it has been scaled = 150 x 0.8^3 = 76.8 mm

To learn more about scale drawings, please check: brainly.com/question/26388230

7 0
1 year ago
The width of a rectangle is 23 yd. What is the perimeter of the rectangle if the length is 6 yd less than the width?
Molodets [167]
C is the answer to your question
5 0
3 years ago
Other questions:
  • Find the volume of a right circular cone that has a height of 9 m and a base with a circumference of 19.6 m. Round your answer t
    9·2 answers
  • Let f(x)=e^x and g(x)=x-3 what are the domain and range of (f g) (x)
    15·2 answers
  • Factor the polynomial:3x^3-x^2-15x+5
    11·1 answer
  • How do you determine a rate of change with a graph
    9·1 answer
  • The five patterns are: circle, plus sign, wavy lines, empty box, and star. One hundred trials were conducted, and your very impr
    13·1 answer
  • What is 2/3 divide by 2/9
    15·1 answer
  • I have 7000$ invested in annuity, part at a yearly rate of 9% and part at a yearly rate of 11%. The total interest earned for on
    11·1 answer
  • What’s the equation.
    13·1 answer
  • What is the answer<br> ????
    9·1 answer
  • Determine the x-intercept of the following equation.<br><br> (-x-2)(x-3)=y
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!