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
Sonja [21]
4 years ago
8

For which equation will f(-2)= -6?

Mathematics
2 answers:
Mila [183]4 years ago
7 0

Answer:

C. f(x)=4x^3+6x^2-x

Step-by-step explanation:

Lets plug in -2 into each of these equation to see which one gives us the solution of -6

A. f(x)=x^3+x

f(-2)=(-2)^3+(-2)\\\\f(-2)=-8-2\\\\f(-2)=-10

B. f(x)=x^4-5x

f(-2)=(-2)^4-5(-2)\\\\f(-2)=16+10\\\\f(-2)=26

C. f(x)=4x^3+6x^2-x

f(-2)=4(-2)^3+6(-2)^2-(-2) \\\\f(-2)=4(-8)+6(4)+2\\\\f(-2)=-32+24+2\\\\f(-2)=-6

D. f(x)=-3x^3-4x^2+4x

f(-2)=-3(-2)^3-4(-2)^2+4(-2)\\\\f(-2)=-3(-8)-4(4)-8\\\\f(-2)=24-16-8\\\\f(-2)=0

As we can see, function C was the only one that gave us the value of -6, so that is our answer.

diamong [38]4 years ago
7 0

Answer:the correct option is C

Step-by-step explanation:

To find the equation for which

f(-2) = - 6, we will substitute x = - 2 into each of the equations. It becomes

A) f(x) = -2^3 + (-2) = - 8 - 2 = -10

B) f(x) = (-2)^4 -5(-2) = 16 + 10 = 26

C) f(x) = 4x^3 + 6x^2 - x = 4(-2)^3 + 6(-2)^2 - (-2) = (4 × -8) + (6 × 4) + 2

= - 32 + 24 + 2 = - 6

D) f(x) = - 3(-2)^3 - 4(-2)^2 + 4(-2) = (-3 × - 8) - (4 × 4) + (4 × -2) = 24 - 16 - 8 = 0

Therefore, the correct option is C

You might be interested in
compare-and-contrast analysis of how culture shapes the heroes in Heart of a Samurai and Black Ships Before Troy. Use transition
BaLLatris [955]

Answer:

Culture has a significant impact on heroes. For starters, it influences how a person or character perceives a particular situation or idea, as well as their point of view on a variety of ideas and topics. Next, it has an impact on how the hero is portrayed in the story. Third, it influences how a character reacts to an idea or situation.

Culture has an impact on heroes. We see an example of this in 'Black Ships Before Troy,' where in Achilles' culture, to be a hero, you must be brave and fight. This is also evident in 'Heart of a Samurai,' where Manjiro's culture dictates that in order to be a hero, you must provide for your family.

6 0
3 years ago
11. If the diagonal of a rectangle is 40 meters, and the length is 24 meters. What is the
Stella [2.4K]

Answer:

The area is 768 square meters

Step-by-step explanation:

Use the Pythagorean theorem to find the width, then multiply the width by the length to find the area of the rectangle.

3 0
3 years ago
Find the length of the missing side of the right triangle.​
Vladimir79 [104]
Here you are trying to find the hypotenuse. So you would take
5^2 (five squared) plus 12^2 (twelve squared) and add them using the equation a^2+b^2= c^2. Now you square 5 and 12 to get 25 and 144. You add them together and get 169. Take the square root of 169 and c. The square root on c will cancel out the squared (to the power of two) part leaving you with just c. And the square root of 169 is 13. So c (the missing length) is 13. C=13.
4 0
4 years ago
Read 2 more answers
Solve 4x-2=2x-10 help
ycow [4]
4x-2x=-10+2
2x=-8
x=-8/2
x=-4
5 0
3 years ago
Read 2 more answers
Five more than the product of a number and 4 is equal to 3 less than the number
Lady bird [3.3K]
Answer: 4x + 5 = x - 3
**Since one of the numbers is unknown you would just use a variable in its place**
5 0
3 years ago
Other questions:
  • Is each line parallel, perpendicular, or neither parallel nor perpendicular to a line whose slope is -6?
    15·1 answer
  • The time for this event for boys in secondary school is known to possess a normal distribution with a mean of 460 seconds and a
    8·1 answer
  • At 3:00 pm Jamie leaves he house and drives north to the beach. she arrives at 530 pm. Also leaving at 3pm, her brother Raul lea
    11·1 answer
  • Lena reflected this figure across the x-axis. She writes the vertices of the image as A'(−2, 8), B'(−5, 6), C'(−8, 8), D'(−4, 2)
    10·1 answer
  • In triangle abc what is the value of cos b A 5/13 B 12/13 C 5/12 D 13/12
    14·1 answer
  • Four friends went scuba diving. According to the following statements, who spotted sea life at the fastest rate? Lance saw 2 ree
    9·1 answer
  • A car can cover a distance of 522 km on 36 liters of petrol. How far can it travel on 14 liters of petrol?
    6·1 answer
  • Madison is going to hike to the point (4,4) on the coordinate grid, which is the top of the
    14·1 answer
  • I am very behind in edge, is anyone willing to help me?
    12·2 answers
  • Need help with this geometry question
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!