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
marusya05 [52]
3 years ago
12

Subtract (3x - 7x^2 + 2) - (4x^2 - 5 + 6x)

Mathematics
1 answer:
Gre4nikov [31]3 years ago
7 0

Answer:

-3x-11x²+7

Step-by-step explanation:

You might be interested in
What are three ways to get 256 using exponents
Nastasia [14]

recall from the previous posting, 2⁸ = 256, so that's one way to represent it.

now, another way hmmm


\bf 2^8\implies 2^{2\cdot 4}\implies (2^2)^4\implies (4)^4\implies 4^4
\\\\\\
\stackrel{\textit{yet another way}}{2^8\implies 2^{4\cdot 2}}\implies (2^4)^2\implies (16)^2\implies 16^2

5 0
3 years ago
The perimeter of a square is 20, find the length of a diagonal. Round your answer to the
nata0808 [166]

Answer:

20

Step-by-step explanation:

5 0
3 years ago
Help me with this please also please show me how you got the answer so I understand it
Ilya [14]
We already know that C = 45.  All we really need to do is simplify the equation and then solve for x.

45 = x + 0.06x + 0.08x + 0.1x
45 = (1 + 0.06 + 0.08 + 0.1)x
45 = 1.24x
x = 36.2903, which rounds to $36.29 for the haircut.
3 0
3 years ago
Which of the following would be an appropriate alternative hypothesis?
Dennis_Churaev [7]

Answer:

a. The population proportion is less than 0.65

True, we ar interested in see if the population proportion is (less, higher, not equal) to a specified value.

Step-by-step explanation:

1) Previous concepts

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".

2) Solution to the problem

a. The population proportion is less than 0.65

True, we ar interested in see if the population proportion is (less, higher, not equal) to a specified value.

b. The sample proportion is less than 0.65

FALSE, we are interesed on parameters, not in statistics like the sample proportion when we conduct a hypothesis test.

c. The population proportion is equal to 0.65

FALSE, the alternative hypothesis can never have an equal sign.

d. The sample proportion is equal to 0.65

FALSE, the alternative hypothesis can never have an equal sign. And we are interesed on parameters, not in statistics like the sample proportion when we conduct a hypothesis test.

e. both (a) and (d)

FALSE, a its correct but option d no.

5 0
3 years ago
How do you solve 5/8a-27=-7
Ber [7]
First of all you need to get rid of the -27 on the left side, to do so you add 27 to both sides so it becomes:
5/8a=20
Now you can divide it by 5 to get:
1/8a=4
Now multiply it by 8 to get:
a=32

Hope this helps :)
5 0
3 years ago
Other questions:
  • We draw a random sample of size 25 from a normal population with variance 2.4. If the sample mean is 12.5, what is a 99% confide
    9·1 answer
  • Order these numbers from least to greatest pleaseeeee<br> 7,213,25.63, 6.23
    7·2 answers
  • Factor the following polynomial completely.<br><br><br><br> A. <br><br> B. <br><br> C. <br><br> D.
    9·1 answer
  • Sammy goes to McDonalds for lunch. He is on a diet that requires that he consume no more than 150 grams of carbohydrates for lun
    8·1 answer
  • The residents of the city voted on whether to raise property taxes. The ratio of yes votes to no votes was 4 to 7. If there were
    7·1 answer
  • I NEED HELP ASAP
    14·2 answers
  • Subtract 9a from -15a
    12·2 answers
  • The measures of the angles of a triangle are shown in the figure below. Solve for x.
    5·1 answer
  • Find three consecutive integers such that the sum of twice the smallest and 3 times the largest is 126
    12·1 answer
  • PLEASE HELP ME FIND THE ANSWER!!!
    6·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!