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]
2 years ago
12

Pre Calc Question for one of my classes

Mathematics
1 answer:
Tatiana [17]2 years ago
5 0

Answer:

Step-by-step explanation:

f(x) is like y in a linear equation. There is one major difference. F(x) tells you what to substitute on the right every time you see an x.

f(a) = -3a + 7

f(b) = -3b + 7

For this question a and b have values. Now work with the right side only. This is the quickest way to get the answer, but it is only marginally correct.

f(a) = -3(-8) + 7 = 24 + 7 = 31

f(b) = -3(7) + 7 = -21 + 7 = - 14

f(a) + f(b) = 31 - 14 = 17

f(a) - f(b) = 31 - (-14) = 31 + 14 = 45

You might be interested in
Is 2 to the power of 3 bigger then the square root of 5?
BARSIC [14]

Answer:

Yes.

Step-by-step explanation:

Let's write out each problem:

\sqrt{5} = 2.3

2^3 = 8

Now that we have both answers to each expression, we can tell that 2^3, in fact, is larger than the square root of 5.

So your answer is, "Yes, 2^3 is bigger than the square root of 5.

Feel free to give brainlest.

Have an amazing day!

6 0
2 years ago
Find the dot product of U and V <br><br> u=7i, v = -2i + 5j
alexandr1967 [171]

Answer:

-14

Step-by-step explanation:

Multiply the is together. Multiply the j's together. Add the answer. The answer is a scalar.

(7 × -2) + (5 × 0)

= -14

6 0
3 years ago
Which pair of triangles can be proven by congruent SAS? HELP ASAP
Y_Kistochka [10]
The first one since the given measurements/guide is Side, Angle, Side
7 0
3 years ago
Read 2 more answers
Find the area of the circle.<br> 20 inches
cricket20 [7]
The area is A≈31.83in²
4 0
3 years ago
Find the total cost of a $40 meal at apple bees with a 10% tip
Flura [38]

Answer:

$44.00 hope this helps

Step-by-step explanation:

3 0
3 years ago
Read 2 more answers
Other questions:
  • Which of the numbers is irrational? <br> A) 2.3 <br> B) √3 <br> C) √4 <br> D) 1/3
    6·1 answer
  • Will Give BRAINLIEST) the distance around a rectangular parking lot is 1,200 meters. If the parking lot is 74 meters long, how w
    6·2 answers
  • 20 points!
    9·1 answer
  • For this distance-time graph, what is the velocity of the car?
    12·1 answer
  • PLEASE HELP!! <br><br> Evaluate f(-7).<br><br> f(x) = 3x2
    15·1 answer
  • I have a shuffled deck of 52 playing cards. A deck of cards has four different suits, with an even number of cards in each. I pi
    15·1 answer
  • The statements below can be used to prove that the triangles are similar. ? △ABC ~ △XYZ by the SSS similarity theorem. Which mat
    5·2 answers
  • Plz help me and show work<br><br> 5 1/4x + 3.75x ≥ -36
    7·1 answer
  • Suppose 54% of the registered voters in a country are Democrats. If a sample of 770 voters is selected, what is the probability
    13·1 answer
  • For which function and interval can the extreme value theorem be applied?
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!