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
djverab [1.8K]
3 years ago
12

Need help don’t know how to do this

Mathematics
1 answer:
DerKrebs [107]3 years ago
4 0
I am not sure but I think the answer is 8
You might be interested in
It’s twice a number is divided by five the results is 4
nasty-shy [4]

Answer: 10

Step-by-step explanation: 10 divided by 5 is 2. 2 times 2 is 4

3 0
2 years ago
Work out the size of one interior angle of a regular 10-sided shape.
andrew-mc [135]

Answer:

144*

Step-by-step explanation:

decagon has 10 sides every side is 144* angles

6 0
2 years ago
A candle burns down at the rate of 0.75 inches per hour. The original height of the candle was 9 inches.
VashaNatasha [74]

Answer:

hope this one help you byee

3 0
2 years ago
A sample of 47 observations is selected from a normal population. The sample mean is 30, and the population standard deviation i
erma4kov [3.2K]

Answer:

We accept the null hypothesis and reject  the alternate hypothesis. There is no evidence to conclude that the population mean is greater than 29. The population mean is less than or equal to 29.

Step-by-step explanation:

We are given the following in the question:

Population mean, μ = 29

Sample mean, \bar{x} = 30

Sample size, n = 47

Alpha, α = 0.05

Population standard deviation, σ = 5

First, we design the null and the alternate hypothesis

H_{0}: \mu \leq 29\\H_A: \mu > 29

a) This is a one-tailed test because the alternate hypothesis is in greater than direction.

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

b) z_{stat} > z_{critical} , we reject the null hypothesis and accept the alternate hypothesis and if z_{stat} < z_{critical} , we accept the null hypothesis and reject  the alternate hypothesis.

c) Formula:

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

Putting all the values, we have

z_{stat} = \displaystyle\frac{30 - 29}{\frac{5}{\sqrt{47}} } = 1.37

d) Now, z_{critical} \text{ at 0.05 level of significance } = 1.64

Since,  

z_{stat} < z_{critical}

We accept the null hypothesis and reject  the alternate hypothesis. There is no evidence to conclude that the population mean is greater than 29. The population mean is less than or equal to 29.

e) P-value is 0.0853

On the basis of p value we again accept the null hypothesis.

5 0
3 years ago
For every car you sell, you get a 6% commission. IF your total sales for the month is $125,650, what is your commission?
Lera25 [3.4K]
Let
x= total cost of cars
y= total commission paid out for all cars sold

6%= 6/100 = .06

Set up an equation:
y= .06(x)

Given: x= $125,650

substitute into the y= .06(x)

multiply $125,650 by .06.

The answers would be: 7539


hope this helped :)
3 0
2 years ago
Read 2 more answers
Other questions:
  • Buffy is purchasing a decorative ribbon in sections that each measure
    10·1 answer
  • True or False<br> The greater (the absolute value of) the slope, the steeper the line.
    13·2 answers
  • The Suarez family paid 15.75 for 3 movie tickets. How much money would they paid for 12 tickets
    8·2 answers
  • If x=1+√2, evaluate x³+1/x³.
    8·1 answer
  • Put in order rational numbers
    7·2 answers
  • The graph of y = f(x) is graphed below. What is the end behavior of f(x)?
    11·1 answer
  • In \triangle BCD,△BCD, \overline{BC}\cong \overline{DB}
    10·1 answer
  • The slope of a line is -4, and the y-intercept is -3. What is the equation of the line written in slope-intercept form?
    9·2 answers
  • What is the slope of a perpendicular line to 3.2 + 4y = 9?
    14·1 answer
  • (d) 200 gm
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!