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
frutty [35]
3 years ago
15

Find the average rate of change between f(-7) and f(-1) in the function f(x)=x^2+2x -8

Mathematics
1 answer:
Viktor [21]3 years ago
3 0

Solve the equation by replacing x with -7 and then -1.

Then subtract the two to find the difference and divide that by the difference between -7 and -1.

f(-7) = -7^2 + 2(-7) -8 = 49 -14 -8 = 27

f(-1) = -1^2 + 2(-1) -8 = 1 -2 - 8 = -9

Difference between 27 and -9 = -36

Difference between -1 and -7 = -6

Rate of change = -36 /-6 = 6

You might be interested in
20% of what original number is 25?
marshall27 [118]

Answer:

Y is 25, P% is 20, so the equation is 25/20% = X Convert the percentage to a decimal by dividing by 100. Converting 20% to a decimal: 20/100 = 0.20

Step-by-step explanation:

3 0
2 years ago
A pump fills a pool at the rate of 20 cubic meters in an hour. If each cubic meter of water costs $10, how many minutes will the
fomenos

The first thing any good mathematician does is convert the measurements to the same unit as what the question is asking. In this problem, it states that the pool fills at a rate of 20 cubic meters per hour. Just keep in mind that an hour is 60 minutes.

The next step is to see how many cubic meters will cost $300. This can be done by dividing 300 by 10. This gets you 30 cubic meters of water.

You already know that 60 minutes is 20 cubic meters of water. That leaves the remaining 10 cubic meters of water. By dividing the rate given, you get that 30 minutes is 10 cubic meters of water. Add the 60 and 30 together to get 90 minutes.

It will take 90 minutes for the pump to use $300.

7 0
3 years ago
Why is 4 4/10 greater than 32/10?
Elena-2011 [213]

Answer:

Because

Step-by-step explanation:

4 4/10 = 4.4  and  32/10 = 3.2

4.4 is bigger than 3.2 so that's why 4 4/10 is bigger.

7 0
3 years ago
Consider these functions
vitfil [10]

9514 1404 393

Answer:

  C.  3x² +24

Step-by-step explanation:

Use the given function definitions and simplify.

  g(f(x))=g\left(\dfrac{1}{3}x^2+4\right)\\\\=9\left(\dfrac{1}{3}x^2+4\right)-12\\\\=3x^2+36-12\\\\\boxed{g(f(x))=3x^2+24}\qquad\textbf{matches C}

5 0
3 years ago
The length of the carpet is 8 yards 9 inches.
zzz [600]

Multiply 8 by 9, this equals 72

Your answer is 72 Inches

7 0
3 years ago
Read 2 more answers
Other questions:
  • Use the quadratic formula to solve 3x2 + 5x + 2 = 0.D. x = 2, –3
    13·1 answer
  • Pls help jwjwkwkwwkwkwkwkwkkwwkkwkwwkkwkw​
    8·1 answer
  • The profit of a company in thousands of dollars is given by the quadratic function P(x) = 3000 + 1200x - 6x2 where x is the amou
    14·1 answer
  • 17/64 + 47/64 + 7/8 =<br>B.<br>1/16<br>134<br>151/64<br>1%<br>D.​
    10·1 answer
  • A boat that can travel 18 mph in still water can travel 21 miles downstream in the same amount of time that it can travel 15 mil
    7·1 answer
  • Describe the relationship between the two quantities. Distance traveled by car; Amount of gas in the car.
    11·1 answer
  • Can someone help me please
    5·1 answer
  • Can u guys help me plzzzzzzzzzzzzzz
    15·2 answers
  • Stefan sells Jin a bicycle for $163 and a helmet for $17...
    15·2 answers
  • WHAT IS THE ANSWER PLZ HELP
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!