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
lesya [120]
2 years ago
8

If f(x) = -x^2+4x-9 and g(x) = x - 8 find g(f(-1)).​

Mathematics
1 answer:
satela [25.4K]2 years ago
5 0

Answer: g(f(-1))=-22

Step-by-step explanation:

To find g(f(-1)), you want to first want to solve f(-1). Once you solved that, you plig the answer you get into g(x). Then, you will have your final answer.

f(-1)=-(-1)²+4(-1)-9                  [exponent]

f(-1)=-1+4(-1)-9                       [multiply]

f(-1)=-1-4-9                             [subtract from left to right]

f(-1)=-14

We have found that f(-1)=-14. Now, we know in -14 into g(x) and solve.

g(-14)=(-14)-8                         [subtract]

g(-14)=-22

Now, we know that g(f(-1))=-22.

You might be interested in
Name two lines in the diagram.
Oksanka [162]

Answer:

Options (3) and (6)

Step-by-step explanation:

"A straight line is a set of all points between two points and extending beyond these points."

Therefore, from the given diagram,

Arrows connecting set of two points B and C and D and E will be straight lines.

Geometrically we denote them with an arrow over the line.

\overleftrightarrow {BC} and \overleftrightarrow {DE}

Therefore, Options (3) and (6) will be the answer.

6 0
3 years ago
Choose the correct slope of the line that passes through the points (1, −3) and (3, −5).
Flura [38]
Slope of a line passing though point (x1,y1) nd (x2,y2) is
(y2-y1)/(x2-x1)

we have
(1,-3) and (3,-5)
x1=1
y1=-3
x2=3
y2=-5

slope=(-5-(-3))/(3-1)=(-5+3)/(2)=-2/2=-1

slope=-1
4 0
3 years ago
Read 2 more answers
Multiple choice please help
Yuri [45]
C, adding the rest of this sentence because it needs to be longer
6 0
2 years ago
Which equation represents a line which is perpendicular to the line y=-4/5x+2?
lyudmila [28]

Answer:

D) 4x + 5y = -30 = -4/5

Step-by-step explanation:

A) 5x + 4y = 28 slope = -5/4

b) 4x-5y = -25 slope = 4/5

c) 4y - 5x = -12 slope = 5/4

d) 4x + 5y = -30 slope = -4/5

5 0
2 years ago
The taste test for PTC (phenylthiourea) is a common class demonstration in the study of genetics. It is known that 70% of the Am
AysviL [449]

Answer:

The variance for the number of tasters is 4.2

Step-by-step explanation:

For each person, there are only two possible outcomes. Either they are tasters, or they are not. The probability of a person being a taster is independent of any other person. So we use the binomial probability distribution to solve this question.

Binomial probability distribution

Probability of exactly x sucesses on n repeated trials, with p probability.

The variance of the binomial distribution is:

V(X) = np(1-p)

It is known that 70% of the American people are "tasters" with the rest are "non-tasters". Suppose a genetics class of size 20

This means that p = 0.7, n = 20

So

V(X) = np(1-p) = 20*0.7*0.3 = 4.2

The variance for the number of tasters is 4.2

7 0
3 years ago
Other questions:
  • Can or can not 385/22 be simplified
    11·2 answers
  • Mia needs to bring at least 25 pieces of fruit to the school picnic. She suggested both apples and oranges and was told to be su
    5·2 answers
  • Which expressions show the expanded form for 907.03? my choices are; (
    15·1 answer
  • What plus what equals 90
    13·2 answers
  • 1. During one season, a total of 453,193 people attended a baseball team's games. What is the value of the digit 5 in the number
    8·1 answer
  • 6 2/9 ÷ (-2 2/3)<br>please help​
    10·1 answer
  • Construct a grouped frequency distribution table for the ages of 30 teachers in a secondary school as recorded below : 26, 29, 2
    15·1 answer
  • A certain type of chocolate bar is sold as follows.
    6·1 answer
  • Rewrite the parametric equations in Cartesian form: x(t)=4+t, y(t)=2sqrt(t).<br> y=?
    15·1 answer
  • Angle between 0 and 360 coterminal to 444 degrees
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!