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
Paladinen [302]
3 years ago
5

If f(x) = x^2 + 3x – 2. find f(-2) .f(-2) = -4f(-2) = 4f(-2) = -2f(-2) = 2​

Mathematics
1 answer:
Reptile [31]3 years ago
4 0

Answer:

f(-2) = - 4

Step-by-step explanation:

f(x) = x² + 3x - 2

f(-2) = ( -2)² + 3 *(-2) - 2

= 4 - 6 - 2

= 4- 8

= - 4

Hope it will help :)

You might be interested in
The function h(t) = -16t2 + 48t + 28 models the height (in feet) of a ball where t is the time (in seconds).
Alex17521 [72]

Answer:

64

Step-by-step explanation:

<em>[using calculus] </em>When the function h(t) reaches its maximum value, its first derivative will be equal to zero (the first derivative represents velocity of the ball, which is instantaneously zero). We have h'(t) = -32t + 48, which equals zero when t = 3/2 = 1.5. The ball therefore reaches its maximum height when t = 1.5. To find the maximum height, we need to find h(1.5), which is 64 feet.

<em>[without calculus] </em>This is a quadratic function, so its maximum value will occur at its vertex. The formula for the x-coordinate of the vertex is -b/2a, so the maximum value occurs when t = -48/(2*16), which is 1.5. The maximum height is h(1.5), which is 64 feet.

5 0
3 years ago
SUBTRACT: (6x3 - 7x2) - (- 7x4 + 7x3 + 8x2)
RSB [31]

Answer:

-5

Step-by-step explanation:

“x” would be multiplication, right?

5 0
3 years ago
Share £90 in the ratio 1:5<br> HELP ME PLEASE
ZanzabumX [31]

Answer:

the answer is 15:75

Step-by-step explanation:

(1+5)=6

£90/6=15

So, (1×15):(5×15)

=15:75

7 0
3 years ago
A.Find the measures of the remaining angles of parallelogram KLMN. Justify each of the measures with a theorem.
Inga [223]

a.

<K = <M = 50 ...Opposite angels are congruent

<K + <L  = 180...Consecutive angles are supplementary

 50 + <L  = 180 so <L = 180 - 50 = 130

<L = <N = 130...Opposite angels are congruent

50 + <N  = 180 so <N = 180 - 50 = 130

b.

MN = LK = 7...Opposite sides are congruent

KN = LM = 10...Opposite sides are congruent

4 0
3 years ago
To obtain the number of centimeters from a distance measured in meters, move the decimal point _____.two places righttwo places
castortr0y [4]
The answer is the second option: T<span>wo places left. 
 
 Therefore, the complete text is: "</span>To obtain the number of centimeters from a distance measured in meters, move the decimal point Two places left ".
<span> 
 The explanation is:
 
 1 meter has 100 centimeters,  then, if you have a distance of 45.55 centimeters and you want to know this value in meters, you need to divide it by 100 or, in others words, you need to </span>move the decimal point two places left:
<span> 
 =(45.55 centimeters)(1 meter/100 centimeters)
 =(45.55x1)/100
 =0.4555 meters
</span>
7 0
3 years ago
Other questions:
  • Reggie and Jay go on a walk every morning. Reggie walks 2 1/4 miles. Jay walks 1 3/8 miles less then Reggie. What is the total d
    14·1 answer
  • Someone help me with all these questions
    8·1 answer
  • Can anyone please help me solve this problem about a graph? Please help immediately!!! :(
    7·1 answer
  • I need to know how to find the slope?
    10·2 answers
  • I REALLY NEED HELP PLEASE
    11·1 answer
  • What is the total angle of This? <br><br><br><br> Pls help
    13·2 answers
  • calculate the amount of property tax due. Tax rate:$41. 50 per $1,000. Assessed value:$148,00. What's the amount of property tax
    7·1 answer
  • Refraction is the bending that occurs when a wave moves from one medium to another at an angle and
    12·2 answers
  • 27) Harry made 4 hits in 9 times at-bat. If she keeps the same success level, how many hits should she make in 18 times at bat?
    11·1 answer
  • Find the value of x, given that the two triangles are similar.​
    14·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!