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
nikitadnepr [17]
3 years ago
5

I WILL MARK AS BRAINLIEST PLEASEEEEE HELPPPP MEEEEE!!! (look at the pic)

Mathematics
1 answer:
nikdorinn [45]3 years ago
7 0

Answer:

C x = 5 ÷ 3

Step-by-step explanation:

x³ = 125 ÷ 27

x = ³√125 ÷ ³√27

x = 5 ÷ 3

It can't be D because a negative number cubed will result in a negative number. Therefore it must be C.

You might be interested in
Ten years ago 53% of American families owned stocks or stock funds. Sample data collected by the Investment Company Institute in
stiks02 [169]

Answer:

a) The null and alternative hypothesis are:

H_0: \pi=0.53\\\\H_a:\pi

b) If 300 families were sampled, for a significance level of 5%, there is enough evidence to support the claim that a smaller proportion of American families own stocks or stock funds this year than 10 years ago (P-value = 0.001).

 

Step-by-step explanation:

The claim that we want to have evidence to support is that a smaller proportion of American families own stocks or stock funds this year than 10 years ago.

The hypothesis for this test should state:

- For the null hypothesis, that the population proportion is not significantly different from 53%.

H_0:\pi=0.53

- For the alternative hypothesis, that the population proportion is significantly less than 53%.

H_a: \pi

If 300 families are sampled, we can perform a hypothesis test for a proportion.

The claim is that a smaller proportion of American families own stocks or stock funds this year than 10 years ago.

Then, the null and alternative hypothesis are:

H_0: \pi=0.53\\\\H_a:\pi

The significance level is 0.05.

The sample has a size n=300.

The sample proportion is p=0.44.

The standard error of the proportion is:

\sigma_p=\sqrt{\dfrac{\pi(1-\pi)}{n}}=\sqrt{\dfrac{0.53*0.47}{300}}\\\\\\ \sigma_p=\sqrt{0.00083}=0.029

Then, we can calculate the z-statistic as:

z=\dfrac{p-\pi+0.5/n}{\sigma_p}=\dfrac{0.44-0.53+0.5/300}{0.029}=\dfrac{-0.088}{0.029}=-3.065

This test is a left-tailed test, so the P-value for this test is calculated as:

\text{P-value}=P(z

As the P-value (0.001) is smaller than the significance level (0.05), the effect is  significant.

The null hypothesis is rejected.

There is enough evidence to support the claim that a smaller proportion of American families own stocks or stock funds this year than 10 years ago.

3 0
3 years ago
Solve for z. assume the equation has a solution for z.<br> −p⋅(d+z)=−2z+59<br> Plz Help
Troyanec [42]

Answer:

 z= \frac{pd-59}{-2+p}

Step-by-step explanation:

-p(d+z)=-2z+59

-pd-pz=-2z+59

lets bring all z integers on one side

-2z+pz = -pd-59

z(-2+p)=-pd-59

z = (pd-59) / (-2+p)

6 0
2 years ago
5. Are the slidutu pun<br> - Complete: 1 = = = 8<br> It’s asking me to complete 1/2=
meriva

Answer:1/2=2/4=4/8

Step-by-step explanation:It's quite simple if you do 1/2 times 2 you would get 2/4 1*2=2  2*2=4 2/4 same with 2/4 time 2 2*2=4 4*2=8 4/8.

5 0
3 years ago
200 people are asked about three brands of beverages Coffee, Tea and Chocolate. 36 like Coffee only, 46 like Coffee but not Tea,
omeli [17]

Step-by-step explanation:

3 0
2 years ago
Read 2 more answers
I know number 13 is right, how do I do 11 and 12?
snow_tiger [21]
11. 43 ; 137
12. 12 ; 102
8 0
3 years ago
Other questions:
  • 16 divided by (13+7)-(12+4)
    5·1 answer
  • Find the circumference of a circle with radius, r = 19.5m.<br> Give your answer in terms of pie
    7·1 answer
  • Helpp pt.4 plzzzzzz​
    14·1 answer
  • A probability close to 1/2 indicates a chance event is ________ to occur
    5·1 answer
  • How many roots of the polynomial 30x^4 + 7x^3-125x^2-54x+72 have absolute value greater than 1?
    12·1 answer
  • If you roll a six sided die six times What is the best prediction possible for the number of times you will roll an even number?
    8·1 answer
  • What are ways do you use math.How would the day have been different if you couldn't do math.
    7·1 answer
  • Identify the kind of sample that is described. A researcher asked a simple random sample of home-schooled children, a simple ran
    12·1 answer
  • Hai!! Can anyone help me? :D
    9·1 answer
  • One cubic meter represents a cube shape that measures 1 meter in all three dimensions. how long is each side in centimeters?
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!