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
DerKrebs [107]
3 years ago
5

If f(x) = −-4x^{2} + 15, then f(−3) =

Mathematics
2 answers:
Naddik [55]3 years ago
6 0

Answer:

\Huge \boxed{-21}

Step-by-step explanation:

f(x) = -4x^{2} + 15

<em>f(-3)</em>, the input is -3 for the function <em>f(x)</em>.

The value of<em> x</em>  =  -3

f(-3) = -4(-3)^{2} + 15

Evaluate the expression.

f(-3) = -4(9)+ 15

f(-3) = -36+ 15

f(-3)=-21

The value of<em> f(-3) </em>is -21.

MariettaO [177]3 years ago
5 0

Answer:

f(-3) = -21

Step-by-step explanation:

To find f(-3), we just need to plug x = -3 into f(x) so:

f(-3) = -4 * (-3)² + 15

= -4 * 9 + 15 = -36 + 15 = -21

You might be interested in
14 2/3 + 1 7/9 - 11 14/29
NARA [144]

Answer:exact form 1295/261

Mixed number form 4 251/261

Step-by-step explanation:

3 0
3 years ago
Read 2 more answers
If f(x) = 5x^3 - 2, then what is the remainder when f(x) is divided by x + 2​
leva [86]

Answer: -12

Step-by-step explanation: use synthetic division

6 0
2 years ago
Click the picture for the question please help!!!
sesenic [268]

Answer:

297.33 m

Step-by-step explanation:

3 0
3 years ago
Please answer me question 3 solving part​
Illusion [34]

Answer:

1. D

2. B

3. A

Step-by-step explanation:

Question 1:

The pair of <JKL and <LKM can be referred to as linear pairs. They are two adjacent angles that are formed from the intersecting of two lines.

Question 2:

Given that <KLM = x°

<KML = 50°

<JKL = (2x - 15)°

According to the exterior angle theorem, exterior ∠ JKL = <KLM + KML.

2x - 15 = x + 50

Solve for x

2x - x = 15 + 50

x = 65

Therefore, <KLM = 65°

QUESTION 3:

<JKL = 2x - 15

Plug in the value of x

<JKL = 2(65) - 15

= 130 - 15

<JKL = 115°

7 0
2 years ago
Elena bought a backpacking tent to take with her on hiking trips.
Masteriza [31]

Answer:

Question 1 = c) Medium: 88 ft²

Question 2 = d) 46.7 ft³

Step-by-step explanation:

Question 1

We would be solving this question by finding the surface area of the tent. The shape of the tent is a square based pyramid.

The surface area of a square based pyramid(tent) =

a² + 2ah

Where in the diagram,

a = base length = 4 ft

h = height of the pyramid (tent ) = 9ft

Surface area = 4² + 2 × 4 × 9

= 16 + 72

= 88ft²

Therefore, the size tarp should she purchase is Medium: 88 ft²

Question 2

For question 2, from the attached diagram, we can see that the diagram is a square based pyramid.

To calculate the amount of water that would fill the square based pyramid, we would have to find the Volume of the tent(square based pyramid).

The formula for the Volume of the tent(square based pyramid) = 1/3(a²h)

Where a = base edge

h = height of the pyramid.

From the diagram,

a = base edge => 4ft.

From the question,

h = height of the tent is given as how tall the tent is = 8.75ft.

Therefore, 1/3(a²h)

1/3 × (4ft)²× 8.75ft

= 46.67ft³

Approximately = 46.7ft³

Therefore, the amount of water it would it take to fill the tent, if the tent is 8.75 ft tall is 46.7ft³

3 0
3 years ago
Other questions:
  • 15DANCE TICKETS WERE SOLD IN ONE HALF HOUR. IF THIS RATE CONTINUES HOW LONG WOULD YOU EXPECT IT TO TAKE TO SELL 270 tickets.
    7·1 answer
  • A volleyball player has a a assists per game during a 5 game match. The volleyball player has 30 assists during the entire match
    7·2 answers
  • Picture//Help me please
    13·1 answer
  • If i take 2 cookies and had 2 more cookies, how many cookies do i have
    13·1 answer
  • 4 1/2 dived by 2 7/10
    9·2 answers
  • What is the measure of the smallest angle?<br> A 53<br> B 57<br> C 63<br> D 63
    8·1 answer
  • A pyramid has a square base with sides 8" and a slant height of 5". total area =
    7·2 answers
  • PLEASE ANSWER THIS QUESTION!!!!!!!!!
    9·1 answer
  • What is the area of a rectangular rug that<br> measures 8 1/4 feet by 10 3/4 feet?<br> Area:
    15·1 answer
  • Please help on the half circle one
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!