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
Gnoma [55]
3 years ago
10

Given the function f(x) = -2x2 + 4x - 7, find f(-4). -55 -7 25

Mathematics
2 answers:
Neko [114]3 years ago
7 0

Answer:

f(-4)= -55

Step-by-step explanation:

We want to find f(x), or y, when x is equal to -4.

Therefore, we can substitute -4 in for x in the function.

f(x) = -2x^2 + 4x - 7

Substitute -4 in for x

f(-4) = -2(-4^2) + 4(-4) - 7

Evaluate the exponent

f(-4)=-2(16)+4(-4)-7

Multiply -2 and 16

f(-4)= -32+4(-4)-7

Multiply 4 and -4

f(-4)=-32-16-7

Subtract

f(-4)=-55

DaniilM [7]3 years ago
6 0
-2(-4)2+4(-4)-7
16-16-7
-7. -7 is correct
You might be interested in
What is the greatest common factor of the terms in the polynomial
ruslelena [56]

Answer:

4x^2

Step-by-step explanation:

The greatest common factor is the greatest number that can divide the terms. The greatest number that can divide each term is 4, and the greatest power of x that can divide each term is x^2. This is because it can't be any number greater than 4 since that number would never be able to divide into 4. This is also the reason why x^2 is the greatest power possible. It cannot be greater than anything divisible by itself. Thus, you multiply 4 by x^2 and the answer is 4x^2.

7 0
3 years ago
When x is 2, y is 4, p is 0.5, and m is 2. If x varies directly with the product of p and m and inversely with y, which equation
erastova [34]
I think is xpm/y=0.5
7 0
3 years ago
Help plssss I’m trying to finish this diagnostics test
Allushta [10]

Answer: 5 Seconds

Step-by-step explanation: Given the equation of the height expressed ad;

h(t) = - 16t^2 + initial height

Given that initial height = 400feet

h(t) = - 16t^2 + 400

The waste will hit the ground at when h(t) = 0

substitute

0 =  - 16t^2 + 400

16t^2 = 400

t² = 400/16

t² = 25

t = √25

t = 5secs

4 0
3 years ago
Hannah is 16 years younger than Ericka. In 5 years Ericka will be twice as old as Hannah. How old is each
vazorg [7]

Answer:11 and 27

Step-by-step explanation:

11+16=27 and they are 16 years apart and because it says 5 years 27+5=32 and if you add 5 to 11 you get 16 and 16+16=32

3 0
2 years ago
Read 2 more answers
Which expression is equivalent to
givi [52]

Answer:

\boxed{D. 9x + 36}

Step-by-step explanation:

<em>Hey there!</em>

<u><em>Given info</em></u>

9(x + 4)

<u><em>Solve!</em></u>

9*x = <u>9x</u>

9*4 = <u>36</u>

<u><em>Answer</em></u>

<u>9x + 36</u>

D. 9x + 36

<em>Hope this helps :)</em>

6 0
3 years ago
Read 2 more answers
Other questions:
  • What is the best estimate for the product of 289 and 7
    15·2 answers
  • The digits in the tens place of a two-digit number are 3 more than the digits in the unit place. If the digit at the unit place
    15·1 answer
  • The high temperature one day was 30°F then the temperature drop 23° during the night does the expression 30+ -23 represent the t
    7·2 answers
  • 721 lbs per week into oz per second
    8·1 answer
  • The piecewise function f(x) is defined below. What is the value of f(1)? mc012-1.jpg f(1) = –2 f(1) = –1 f(1) = 2 f(1) = 3
    5·2 answers
  • Based on past experience, the main printer in a university computer centre is operating properly 90% of the time. Suppose inspec
    15·1 answer
  • Write the equations of 2 straight lines which are perpendicular to y = -3x +0.5.
    15·1 answer
  • The height (ft) of an object is launched into the air given by the function h(t)=-6t^2+120t+17 where t is the time in seconds.
    5·1 answer
  • Is this right? Im trying to finish all of my work!!
    15·1 answer
  • Which function should be used when evaluating the function at x = -1?
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!