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
vichka [17]
3 years ago
8

What is twice the sum of 4x^2-x+1 and -6x^2+x-4 ?

Mathematics
2 answers:
pantera1 [17]3 years ago
8 0

Answer:

-4x^2 - 6

Step-by-step explanation:

When you add them together it gives a sum of -2x^2 - 6. Multiplying that by 2 gives you the above answer.

lesantik [10]3 years ago
6 0
-4x^2 - 6

When you add them together it gives a sum of -2x^2 - 6. Multiplying that by 2 gives you the above answer. 
You might be interested in
A store buys 13 sweaters for $52 and sells them for $377. How much profit does the store make per sweater?
elena-s [515]

Answer:

25

Step-by-step explanation:

So, 13 sweaters cost $52, so 1 sweater costs $4. If he sells the 13 sweaters for $377, you will need to do 377 divided by 13, and that is 29. The last step you have to do is find the difference (subtraction) of 4 and 29. So, 29-4=25. Therefore, The profit the store made was $25 per sweater. Hoped that helped!!

5 0
2 years ago
Read 2 more answers
Scientists are preparing two satellites to be launched. The equation y = 8000.C represents the number of miles, y, that the sate
Tema [17]

Answer: 6800

Step-by-step explanation:

24000 divided into 20

8000-1200

6 0
2 years ago
Read 2 more answers
Find the highest common factor (HCF) of 12 and 20.
damaskus [11]
<span>The factors of are 12, 6, 4, 3, 2, 1, while those for 20 are 20, 10, 5, 4, 2, 1. The common highest factor for the two numbers is 4.</span>
5 0
3 years ago
You are planning a promotion that will feature breakfast sandwiches. Your store normally sells 75 breakfast sandwiches per week.
EleoNora [17]
The number of additional sandwiches is 15.

If we multiply 75 sandwiches by 0.2 (20%), then we get 15, which would be the number of sandwiches needed to be sold to meet the sales goal.

Hope this helped.
7 0
2 years ago
Find all the zeros of the equation x^4-6x^2-7x-6=0
rusak2 [61]

Answer:

The zeros are

x=-2,\:x=3,\:x=-\frac{1}{2}+i\frac{\sqrt{3}}{2},\:x=-\frac{1}{2}-i\frac{\sqrt{3}}{2}

Step-by-step explanation:

We have been given the equation x^4-6x^2-7x-6=0

Use rational root theorem, we have

a_0=6,\:\quad a_n=1

\mathrm{The\:dividers\:of\:}a_0:\quad 1,\:2,\:3,\:6,\:\quad \mathrm{The\:dividers\:of\:}a_n:\quad 1

\mathrm{Therefore,\:check\:the\:following\:rational\:numbers:\quad }\pm \frac{1,\:2,\:3,\:6}{1}

-\frac{2}{1}\mathrm{\:is\:a\:root\:of\:the\:expression,\:so\:factor\:out\:}x+2

=\left(x+2\right)\frac{x^4-6x^2-7x-6}{x+2}\\

=x^3-2x^2-2x-3

Again factor using the rational root test, we get

=\left(x+2\right)\left(x-3\right)\left(x^2+x+1\right)

Using the zero product rule, we have

x+2=0:\quad x=-2\\x-3=0:\quad x=3\\x^2+x+1=0\\\\x_{1,\:2}=\frac{-1\pm \sqrt{1^2-4\cdot \:1\cdot \:1}}{2\cdot \:1}\\\\=-\frac{1}{2}+i\frac{\sqrt{3}}{2},\:x=-\frac{1}{2}-i\frac{\sqrt{3}}{2}

Therefore, the zeros are

x=-2,\:x=3,\:x=-\frac{1}{2}+i\frac{\sqrt{3}}{2},\:x=-\frac{1}{2}-i\frac{\sqrt{3}}{2}


4 0
3 years ago
Read 2 more answers
Other questions:
  • The sum of a number and 12 is 20. What is the number?
    12·2 answers
  • Write 4.7 as a mixed number in simplest form
    9·1 answer
  • Sara can drive 240 miles in 6 hours. How many miles can she drive in 1 hour?
    6·1 answer
  • Which of the following is the domain of the function y = √x + 4 - 3
    12·1 answer
  • How can x^2=x^2+2x+9 be set up as a system of equations
    12·1 answer
  • To convert 352 fluid ounces into gallons, which two ratios would you multiply by
    11·1 answer
  • Annie estimates that the height of a bookcase is 78.25 in. The actual height is 75.50 in.
    12·1 answer
  • What is the answer to this problem?  7.5/12=4.2/x
    12·2 answers
  • The members of the student council are selling raffle tickets. The school decides that the top three raffle ticket sellers will
    11·1 answer
  • What is the formula for squares area​
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!