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
-Dominant- [34]
4 years ago
8

How to substitute x=-2 and x=5 into 2x^2+6-20=0 to check my work

Mathematics
1 answer:
Komok [63]4 years ago
4 0
First answer (x=-2)
...
(2)[(-2)^2]+6-20
2(4)+6-20
8+6-20
14-20
<em>-6 (answer)
</em><em>
</em><em />Second answer (x=5)
...
(2)[(-5)^2]+6-20
2(25)+6-20
50+6-20
56-20
<em>36 (answer)
</em>Hope this helps!
You might be interested in
Look at this picture to help
vlabodo [156]
The answer is N(-3,3) the formula of reflecting across the x-axis is (x,-y)
7 0
4 years ago
George has opened a new store and he is monitoring its success closely.
Nataly_w [17]
(r-c)(3) means that you will simply plug in the value 3 as x in the functions r(x) and c(x) and take the difference of both.

Solving for the value of the functions we'll get:
r(3)= (3)^{2}+5(3)+14=9+15+14=38
c(3)= (3)^{2}-3(3)+14=9-9+4=4
(r-c)(3)=38-4=34

Since the value is positive, we can say that the store will profit in its third month. Knowing that r(x) and c(x) is measured in hundreds of dollars, we can also say that the profit will be $3400.

ANSWER: C. The new store will have a profit of $3400 after its third month in business.
4 0
3 years ago
Read 2 more answers
Edwin writes an absolute value equation to determine the values that are 0.3 units from 3.9.
Fittoniya [83]

The absolute value equation written by Edwin according to his intention in the task content is; |x -3.9| = 0.3 and The values that are 0.3unuts from 3.9 are; 4.2 and 3.6.

<h3>What absolute value equation can be written by Edwin to find the numbers which are 0.3 units away from 3.9 on the number line?</h3>

Since the numbers in discuss are required to be 0.3 units from 3.9, it follows that one number is greater while the other is less than 3.9 and hence the required absolute value equation is;

|x -3.9| = 0.3. which can be solved as;

x-3.9 = 0.3; x =4.2.

Or

x -3.9 = -0.3; x = 3.6.

Read more on absolute value equation;

brainly.com/question/26954538

#SPJ1

4 0
2 years ago
#19. State the possible number of imaginary zeros of f(x) = 7x3(to the third power) - x2 (to the second power) + 10x - 4.
Mrac [35]
Since imaginary zeros always come in conjugate pairs there are either zero or two imaginary zeros
6 0
3 years ago
I don’t know the answer to the question
DerKrebs [107]

Answer:

10i

Step-by-step explanation:

answer shown and pictured

3 0
3 years ago
Other questions:
  • If f is a continuous function with odd symmetry and limit as x approaches infinity of f of x equals 6, which of the following st
    6·2 answers
  • Compare 7.16 and 7.61
    9·1 answer
  • A 10-speed bicycle tire has a
    13·1 answer
  • The area of a square garden is 200 m². How long is the diagonal?
    6·1 answer
  • A dozen bagels for $7.80_<br>Vhs or<br>a pack off 3 bagels for $2.10 what is the answer​
    14·1 answer
  • En una radio, 1/8 del dia esta destinado a emitir publicidad. Del total de publucidad, 3/5 corresponden a comerciales de univerc
    6·1 answer
  • Tell weather each equation can be written in the from y=mx+b. Write yes or no
    7·2 answers
  • -4(5+n)=-12<br><br> if yall could hurry this is for my friend
    5·2 answers
  • Gordon makes 4/5 of a recipe with 2/3 bag of cheese. At this rate, what fraction of the bag of cheese will Gordon use to make th
    10·1 answer
  • 5(-2x²-9x+3)-(4x²-10x+2)
    10·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!