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
alex41 [277]
3 years ago
8

If ƒ (x ) = 3x 2 - x, find ƒ (-2). 10 14 38

Mathematics
1 answer:
mamaluj [8]3 years ago
3 0

Answer:

Answer is 14.

Step-by-step explanation:

f(-2)=3*(-2)^2 - (-2)

=3*4+2

=12+2

=14

You might be interested in
A square's area is 3 times its perimeter. Find the dimensions of the square.
snow_tiger [21]
Answer:

length = 6

width = 6

height = 6

Step-by-step explanation:

Area of the square = 6 * 6

Area of the square = 36

The perimeter = 6 + 6

The perimeter = 12

so 36 is 3 times bigger than 12
7 0
2 years ago
What number is between 0 and 1 centimeters
Shkiper50 [21]
The number would be 0.5
8 0
3 years ago
Read 2 more answers
Hello I need help on this math question<br>BRAINLIEST For the fastest correct answer​
Stells [14]

Answer:

LA: 37.68 in squared

TSA: 94.2 in squared

4 0
2 years ago
An aquarium with a square base has no top. There is a metal frame. Glass costs 8 dollars/m^2 and the frame costs 7 dollars/m. Th
Irina-Kira [14]
Given that the volume of the aquarium is 20m^3.

Volume = Area of Base x height

Area of Base = Volume / height = 20/h

Given that the aquarium has a square base.

Area of square = l^2

Thus, the length of the base of the aquarium is \sqrt{area \ of \ base} = \sqrt{ \frac{20}{h} }

The frame is to cover 8 sides with the length equal to the length of the base and 4 sides with the length of the height.

Thus, the total perimeter of the frame is given by 8\sqrt{\frac{20}{h}}+4h= \sqrt{64\left(\frac{20}{h}\right)}+4h = \sqrt{\frac{1,280}{h}}+4h

Area of the four side faces of the aquarium is 4 times the length of the base times the height = 4\times\sqrt{ \frac{20}{h} }\times h=\sqrt{16\left(\frac{20}{h}\right)h^2}=\sqrt{320h}

Total area to be covered by grass is the base and the four side faces and is given by \frac{20}{h}+\sqrt{320h}

Cost of the entire metal frame = 7\left(\sqrt{\frac{1,280}{h}}+4h\right)= \sqrt{49\left(\frac{1,280}{h}\right)}+7(4h) = \sqrt{\frac{62,720}{h}}+28h

Cost of the entire grass = 8\left(\frac{20}{h}+\sqrt{320h}\right)=\frac{160}{h}+\sqrt{64(320h)}=\frac{160}{h}+\sqrt{20,480h

Therefore, total cost in terms of the height, h, is given by

C=\sqrt{\frac{62,720}{h}}+28h+\frac{160}{h}+\sqrt{20,480h
3 0
3 years ago
Find the area between the two functions
Inga [223]

The area between the two functions is 0

<h3>How to determine the area?</h3>

The functions are given as:

f₁(x)= 1

f₂(x) = |x - 2|

x ∈ [0, 4]

The area between the functions is

A = ∫[f₂(x) - f₁(x) ] dx

The above integral becomes

A = ∫|x - 2| - 1 dx (0 to 4)

When the above is integrated, we have:

A = [(|x - 2|(x - 2))/2 - x] (0 to 4)

Expand the above integral

A = [(|4 - 2|(4 - 2))/2 - 4] - [(|0 - 2|(0 - 2))/2 - 0]

This gives

A = [2 - 4] - [-2- 0]

Evaluate the expression

A = 0

Hence, the area between the two functions is 0

Read more about areas at:

brainly.com/question/14115342

#SPJ1

5 0
1 year ago
Other questions:
  • Is 1/5 a terminating or repeating decimal
    13·1 answer
  • Combine like terms to create an equivalent expression. 20(−1.5r+0.75)20(-1.5r+0.75)20(−1.5r+0.75)20, left parenthesis, minus, 1,
    10·2 answers
  • Forty percent of students at pine crest middle school have a school sweatshirt. There are 560 students at the school.
    15·1 answer
  • Help I need help plzzz hurry <br> What does x=
    8·2 answers
  • Can someone tell me What is 10% of 20
    9·1 answer
  • Write the quadric equation in standard form and then choose the value of "b" (2x-1) (x+5)=0
    8·1 answer
  • Twice the sum of a number and 5 is equal to 20
    14·2 answers
  • Find the perimeter of this adjoining figure​
    7·1 answer
  • I need help please! This is urgent!
    7·1 answer
  • As the guest was sneaking away, the grounds keeper was 4 feet(48 inches) away and pushed an 84 inch ladder onto the suspect. The
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!