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
Sati [7]
3 years ago
13

Let f(x)=x^2-3x -7 find f (-3)...

Mathematics
1 answer:
Romashka [77]3 years ago
5 0
Replace the variable x<span> with </span><span>−3</span><span> in the </span>expression<span>.
</span><span>f(−3)=(−3<span>)^2</span>−3(−3)−7

</span>Simplify each term<span>.
</span><span>f(−3)=9+9−7

</span>Add 9<span> and </span>9<span> to get </span><span>18.
</span><span>f(−3)=18−7

</span>Subtract 7<span> from </span>18<span> to get </span><span>11.
</span><span>f(−3)=11

</span>The final answer is <span><span>11.

11</span></span>
You might be interested in
out of 50 students,34 joined the journalism class and 25 joined the robotics club.If 16 students joined both clubs,how many stud
kari74 [83]
7 students are in neither club

34+25= 59
59-16=43
43-50=7
8 0
4 years ago
Read 2 more answers
What is the length of each diagonal? Please show all work on how you got your answer
Komok [63]

Answer:

  11

Step-by-step explanation:

The diagonals in a rectangle are the same length.

  WY = XZ

  6x -7 = 3x +2

  3x -7 = 2 . . . . . . subtract 3x

  3x +2 = 11 . . . . . .add 9 to match the expression for XZ

The length of each diagonal is 11 units.

_____

Note that we took a little shortcut to the solution. We don't actually need to know the value of x. We only need to know the value of one of the expressions for diagonal length. The expression containing "3x" is the most convenient to determine.

5 0
3 years ago
7-5.419 help me quickly​
Roman55 [17]
The answer to the questions is 1.851
8 0
3 years ago
This one is a doozy for me, need help please
Maksim231197 [3]

Answer:

The correct answer is B

Step-by-step explanation:

Kinda complicated to explain, if you need me to then comment and I'll do it

4 0
2 years ago
Read 2 more answers
A cylinder has a radius of 8 inches and a height of 16 inches. Find the volume of the figure described. Use 3.14 for .
Viefleur [7K]

Answer:

3,215.36 cubic meters

Step-by-step explanation:

Volume of Cylinder:pi×radius squared×height

3.14×8×8×16=3,215.36

I hope this helps:)

8 0
3 years ago
Other questions:
  • Scissors come in packages of 3. Glue sticks come.in packages of 10 Martha wants to buy the same number of each . what is the few
    10·2 answers
  • What is the area of a pentagon with a side of 10 m
    14·1 answer
  • What is 1/7 of 28.....​
    10·1 answer
  • Write -3/16, 7/4, -3/8 in order least to greatest
    15·2 answers
  • Factor the polynominal 5x^2y + 6x^2y^3 - 3x^3y^2
    10·1 answer
  • Jerry started doing sit-ups every day. The first day he did 19 sit-ups. Every day after that he did 4 more sit-ups than he had d
    12·1 answer
  • Someone please help with this math problem!!!
    13·2 answers
  • Anybody know the answer?
    14·2 answers
  • (b) Express the number 17<br> (i) in base 2<br> (ii) in base 5
    13·1 answer
  • Captain Ashley has a ship, the H.M.S Crimson
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!