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
KATRIN_1 [288]
3 years ago
14

If f(x)=4x-7 and g(x)=2x+4 evalvate f(x)+g(x) for x=-3

Mathematics
2 answers:
galben [10]3 years ago
7 0

Answer:

-21

Step-by-step explanation:

We are told to find f(x) + g(x) for x= -3. Therefore, we must evaluate f(-3) and g(-3), then add them together.

First, evaluate f(-3).

f(x)=4x-7

To find f(-3), we need to substitute -3 in for x.

f(-3)= 4(-3)-7

Solve according to PEMDAS: Parentheses, Exponents, Multiplication, Division, Addition, Subtraction First, multiply 4 and -3.

f(-3)= -12-7

Next, subtract 7 from -12

f(-3)= -19

Next, find g(-3).

g(x)=2x+4

To find g(-3), substitute -3 in for x.

g(-3)= 2(-3)+4

Solve according to PEMDAS. First, multiply 2 and -3.

g(-3)= -6+4

Next, add -6 and 4

g(-3)= -2

Now, we can add f(-3) and g(-3) together.

f(-3) + g(-3)

f(-3)= -19

g(-3)= -2

-19 + -2

Add

-21

Setler79 [48]3 years ago
7 0

Answer:

-21

Step-by-step explanation:

Adding f and g together, we get  (f + g)(x) = 4x + 2x -7 + 4, or

                                                                      = 6x - 3

Now replace x with -3.  We get:

(f + g)(-3) = 6(-3) - 3 = -21

You might be interested in
PLEASE HELP FAST!!!!!!!!!
Lana71 [14]

Answer:

132 degrees

Step-by-step explanation:

To solve this problem, you need to know a couple of rules

1) Inscribed angle theroem: when an angle is inscribed in a circle and touches the other end (as opposed to ending at the diameter of the circle), the measure of this angle is half of the measure of the arc.

2)Angles of a quadrilateral shape add up to 360 degrees.

3) The angles inside a circle and the angles of the circles arclength adds up to 360 degrees.

So first, solve angle S with inscribed angle theorem. 126/2 = 63

Then, use the rule that all arc angles in a circle add up to 360 degrees to find the arc angle from Q to S. 360-90-126 = 144. Now find angle P with inscribed angle theorem by doing 144/2 = 72.

Now, use the rule that all angles in a quadrilateral add up to 360 to find R. 360-93-72-63 = 132.  

Let me know if this doesn't work, I'll look at it again.

7 0
2 years ago
You earn 35 for washing 7 cars how much do you earn for washing 4 cars
Neko [114]

Answer:

20

Step-by-step explanation:

6 0
2 years ago
Read 2 more answers
one day in october, agent sanchez enters the code 3477 how do you know this is code is incorrect and and will not open the door
kozerog [31]
Well first off the cia will say that they didn’t send him, but we know the truth. Second off that number is the last 4 digits to the illuminatis president, Tom Hanks. Lastly, that number is also the number of kids Joe Biden has sniffed in the last year.
5 0
2 years ago
What is the value of the expression shown below?
Ymorist [56]
(8 + [7+1] 2 ÷ 4 × 1) ÷ 2^4

Let's focus on what's in parentheses first.

8 + 8 × 2 ÷ 4 × 1
8 + 16 ÷ 4 × 1
8 + 4 × 1
8 + 4
12

Now, to what is outside the parentheses:

Because of the way it is written, you will do 12 ÷ 2 first.
12 ÷ 2^4
6^4

Answer: 1296
8 0
2 years ago
Read 2 more answers
?can someone help meh
torisob [31]

Answer:

Step-by-step explanation:

C

4 0
3 years ago
Other questions:
  • Luke has 48 books. He puts 7 books in a box. How many boxes can he fill? Explain how you interpreted the remainder
    8·2 answers
  • The domain of the logarithm function
    11·1 answer
  • What’s the answer to #12? and why
    6·2 answers
  • Alexis wants to make a paperweight at pottery class. He designs a pyramid-like model with a base area of 100 square centimeters
    11·1 answer
  • 84052 in word from plz need help in my homework
    13·2 answers
  • SUPREME COURT The first Chief Justice of the U.S. Supreme Court, John Jay, served 2079 days
    8·1 answer
  • Question 7(Multiple Choice Worth 1 points) (08.02 LC) Eva conducted a survey to find out the amount of time high schoolers spend
    13·1 answer
  • Carly can paint 6/7 of a picture in 3/14 of an hour how many pictures can they paint in a full hour
    11·2 answers
  • Graph the image of square TUVW after the following sequence of transformations:
    12·1 answer
  • Help me out pls & thankssss
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!