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
mel-nik [20]
3 years ago
10

If 9 (x) = – 5x2 – 4x + 19 find f (–3)

Mathematics
1 answer:
Sliva [168]3 years ago
7 0

Answer:

- 14

Step-by-step explanation:

f(x) =  - 5 {x}^{2}  - 4x + 19 \\ plug \: x =  - 3 \\ f( - 3) =  - 5 {( - 3)}^{2}  - 4( - 3) + 19 \\  f( - 3) =  - 5  \times 9   + 12 + 19 \\ f( - 3) =  - 45 + 31 \\ f( - 3) =  -14

You might be interested in
Help me find the answer to this area of a kite problem
julia-pushkina [17]

Answer:

Below in bold.

Step-by-step explanation:

Area of a kite = 1/2 * D1 * D2   were D1 and D2 are the 2 diagonals

D1  = 5 + 2.5 = 7.5 and D2 = 2*44444.5 = 9

So area = 1/2 * 7.5 * 9

= 33.75.

5 0
2 years ago
Read 2 more answers
5 | 9 - 5n|-7 = 38<br> I need helppp.
DerKrebs [107]

Answer:

I got 0 or 18/5

Step-by-step explanation:

8 0
3 years ago
0.2x+2.7x−8.1=6.9+1.1x<br> plz help<br> 25 points on the line
ololo11 [35]

Answer:

Step-by-step explanation:

0.2x + 2.7x - 8.1 = 6.9 + 1.1x

0.2x + 2.7x - 1.1x = 6.9 + 8.1

1.8x = 15

x = 15/1.8

x = 8.33

6 0
3 years ago
The distance D that a spring is stretched by a hanging object varies directly as the weight W of the object. if a 9-kg object st
sergiy2304 [10]

Answer:

I think it is b

Step-by-step explanation:

7 0
3 years ago
How do you solve x^​4? Is it (a) x times x times x times x or (b) x plus x plus x plus x
andriy [413]

Step-by-step explanation:

{x}^{4} = x \times x \times x \times x

Multiply x as much time as its degree.

8 0
3 years ago
Read 2 more answers
Other questions:
  • What is the greatest common factor of x6 and x9
    14·2 answers
  • Write an equation for a line with a slope of<br> 3 and a y-intercept of (0, 2).
    15·1 answer
  • A national college researcher reported that 65% of students who graduated from high school in 2012 enrolled in college. Twenty n
    9·1 answer
  • At 11:00 AM a bus left San Jose travelling to Los Angeles at 48 mph. Four hours later a motorcyclist started moving in the same
    15·1 answer
  • How to solve the indefinite integral
    5·1 answer
  • Find the quotient.<br>7)91<br>​
    6·2 answers
  • WILL MARK BRAINLIEST HELP ASAP ASAP
    10·1 answer
  • What are the coordinate points of Y
    14·1 answer
  • After restocking the vending machines, Efrain determined that 2 out of every 5 packages of candy sold were M&amp;M'S®. The vendi
    14·2 answers
  • If you can solve this, your a genius..<br> 900 + 1 = ?
    15·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!