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
enyata [817]
3 years ago
10

Find f(–2) for the function f(x) = 3x^2 – 2x + 7

Mathematics
2 answers:
seraphim [82]3 years ago
4 0
Replace every x in the function with a -2. 3(-2)^2 - 2(-2) + 7. Simplifying gives you 3(4) + 4 + 7. Do the math now. 12 + 4 + 7 = 23
allochka39001 [22]3 years ago
3 0

You're correct its 23 on edge

You might be interested in
Which exponential function has the greatest average rate of change over the interval [ 0 , 2 ]
PIT_PIT [208]

The exponential function which has the greatest average rate of change over the interval [0, 2] is option B.

<h3>How to calculate the average rate of change?</h3>

Mathematically, the average rate of change between two (2) points can be calculated by using this expression;

Slope = \frac{Change\;in\;y\;axis}{Change\;in\;x\;axis}\\\\Slope = \frac{y_2\;-\;y_1}{x_2\;-\;x_1}

For option A, we have:

when x = 0;             when x = 2;

y = 3(1.6)^x               y = 3(1.6)^x

y = 3(1.6)^0              y = 3(1.6)^2

y = 3.                        y = 7.68

ΔA = (7.68 - 3)/(2 -0) = 2.34.

For option B, we have:

ΔA = (9 - 4)/(2 -0) = 2.5.

For option C, the exponential function has a common ratio of 2.

ΔA = 2.

For option D, we have:

ΔA = (10 - 8)/(1 -0) = 2.

In conclusion, we can logically deduce that the exponential function which has the greatest average rate of change over the interval [0, 2] is option B i.e 2.5.

Read more on average rate of change here: brainly.com/question/3493733

#SPJ1

5 0
1 year ago
What is the quotient of 5/8 divided by 1/4
Tcecarenko [31]

Answer:

20/8 or 5/2

Step-by-step explanation:

5/8 times 4/1

6 0
3 years ago
Use long division to divide and use the result to factor the dividend completely.
dolphi86 [110]
The answer is:
Factor the expression

3 0
3 years ago
Maths question please help !! thank u :)​
nikdorinn [45]

Answer:

1350m

Step-by-step explanation:

Let the distance ran by Denise, Farah and Elaine be D, F and E meters respectively.

From the given information,

D= ⅔(E +F) -----(1)

E= ½(D +F) -----(2)

Let's get rid of the fraction so the equations are much easier to work with.

From (1):

3D= 2(E +F) <em>(Multiply both sides by 3)</em>

3D= 2E +2F -----(3) <em>(</em><em>Expand</em><em>)</em>

From (2):

2E= D +F -----(4)

Substitute (4) into (3):

3D= D +F +2F

3D -D= 3F

2D= 3F

Given that Farah ran 360m, F= 360.

2D= 3(360)

2D= 1080

D= 1080 ÷2

D= 540

2E= D +F

2E= 540 +360

2E= 900

E= 900 ÷2

E= 450

Total distance the 3 girls ran

= D +F +E

= 540 +360 +450

= 1350m

Alternatively, you could start by substituting F= 360 to equations (1) and (2).

6 0
3 years ago
The length of a rectangle is the sum of the width and 3. The area of the rectangle is 54
vesna_86 [32]

Answer:

6 units

Step-by-step explanation:

Area of rectangle=L*W

L=w+3,w(w+3)

w^2+3w-54=0

W=6

6 0
3 years ago
Other questions:
  • Which scenario represents exponential growth
    15·1 answer
  • At Thanksgiving, Mrs. Jones overcooked the turkey so all but StartFraction 4 Over 5 EndFraction of it had to be thrown away. The
    9·2 answers
  • -<br> 1<br> 7-(5-4)<br> 4)<br> 1<br> -<br> 3<br> A) 7<br> C) 4<br> B) 1<br> 2<br> -
    6·1 answer
  • PART A)find x using the ratio of the sides 12 cm and 16 cm: x/20=12/16. Show your work
    8·2 answers
  • FREE PTS! Whats your favorite color? Mine is blue skylight ​
    14·2 answers
  • HELP PLEASE!! HURRY!!!! NO SPAM!!!!!! Identify the solution set of the inequality 4|f + 6| ≤ −16 and the graph that represents i
    9·1 answer
  • A rock concert producer has scheduled an outdoor concert. If it is warm that day, she expects to make a $20,000 profit. If it is
    14·1 answer
  • What is the equivalent division statement to 63 x 1/9
    15·1 answer
  • The ratio of melanie allowance to Jacob allowance is 4.1 to 20.5. If Jacob gets $5.00, how much allowance dose Melanie get
    10·1 answer
  • Manuela has a piece of red ribbon 7 1/2 feet long. She cut the ribbon to have one piece 1 3/4 feet long.
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!