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
charle [14.2K]
3 years ago
7

Could someone tell me if I am correct? WILL GIVE BRAINLIEST!!

Mathematics
2 answers:
ladessa [460]3 years ago
6 0

Answer:correct

Step-by-step explanation:

Romashka [77]3 years ago
5 0

You have a typo in your answer where you "got 9x + 12". Should be a negative 12.

You might be interested in
How many millimeters are in 15 fluid ounces
Helen [10]

There are 443,603 cubic millimeters in 15 fluid ounces.

Because there are 29,573.5 in 1 fluid ounces, so you would just multiply that answer by 15.

Good luck and have a great day Monkeybutt8103!

8 0
3 years ago
A coffee machine can be adjusted to deliver any fixed number of ounces of coffee. if the machine has a standard deviation in del
zysi [14]
The mean will be calculates as follows; from the formula of z-score we shall have:
z=(x-μ)/σ
the z-score associated with 0.5% is 0
thus
0=
(8-μ)/0.4=0
solving for x we get:
μ=9 

Answer: μ=9

6 0
4 years ago
A doctor at a local hospital is interested in estimating the birth weight of infants. How large a sample must she select if she
Nataly_w [17]

Answer:

The minimum sample size needed is n = (\frac{1.96\sqrt{\sigma}}{4})^2. If n is a decimal number, it is rounded up to the next integer. \sigma is the standard deviation of the population.

Step-by-step explanation:

We have that to find our \alpha level, that is the subtraction of 1 by the confidence interval divided by 2. So:

\alpha = \frac{1 - 0.9}{2} = 0.05

Now, we have to find z in the Z-table as such z has a p-value of 1 - \alpha.

That is z with a pvalue of 1 - 0.05 = 0.95, so Z = 1.645.

Now, find the margin of error M as such

M = z\frac{\sigma}{\sqrt{n}}

In which \sigma is the standard deviation of the population and n is the size of the sample.

How large a sample must she select if she desires to be 90% confident that her estimate is within 4 ounces of the true mean?

A sample of n is needed, and n is found when M = 4. So

M = z\frac{\sigma}{\sqrt{n}}

4 = 1.96\frac{\sigma}{\sqrt{n}}

4\sqrt{n} = 1.96\sqrt{\sigma}

\sqrt{n} = \frac{1.96\sqrt{\sigma}}{4}

(\sqrt{n})^2 = (\frac{1.96\sqrt{\sigma}}{4})^2

n = (\frac{1.96\sqrt{\sigma}}{4})^2

The minimum sample size needed is n = (\frac{1.96\sqrt{\sigma}}{4})^2. If n is a decimal number, it is rounded up to the next integer. \sigma is the standard deviation of the population.

4 0
3 years ago
What is the solution for this inequality?
Allisa [31]
-10x<40
divide both sides with -10
x>-4
sign changes since it's divided with negative number
8 0
3 years ago
Read 2 more answers
Plzz help....Calculate the length of the corresponding sides for FGHIJ and ABCDE. You will need to use the distance formula
GaryK [48]

Answer:

PLATO Explanation in the image below :)

5 0
3 years ago
Read 2 more answers
Other questions:
  • What is 17pi/4 in decimal form nearest the thousandth
    11·1 answer
  • Tremaine is mailing a package to his grandmother. Which tool and unit could be used to measure the weight of the package?
    13·2 answers
  • In the figure below, GRAH is a rectangle, RA=7, and GA=10. Determine AH.
    12·1 answer
  • Plz help if you know THANK YOU SO MUCH?BIG POINTS ON THIS TO FOR WHO EVER ANSWERS
    14·1 answer
  • What is the maximum number of terms in the sum of two trinomials
    6·2 answers
  • Help Me With This Question
    7·1 answer
  • Find the equation of the line that passes through the following lines points (0,-1) and (3,12).​
    11·1 answer
  • Need help!!!
    10·1 answer
  • How much time do you actually save by speeding?
    12·2 answers
  • Can someone please solve this
    15·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!