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
Virty [35]
3 years ago
13

How would you evaluate f(-2) and f(a) for f(x) = 2x^2-x+5

Mathematics
1 answer:
kifflom [539]3 years ago
7 0
\bf f(x)=2x^2-x+5\\\\
-------------------------------\\\\
f(-2)=2(-2)^2-(-2)+5\implies f(-2)=2(-2)(-2)-(-2)+5
\\\\\\
f(-2)=2(4)+2+5\implies f(-2)=8+2+5\implies f(-2)=15
\\\\\\
f(a)=2(a)^2-(a)+5\implies f(a)=2a^2-a+5
You might be interested in
Michael is packing books into boxes. Each box can hold either 15 small books or
zavuch27 [327]

Let x equal the number of tiny book boxes and y equal the number of large book boxes.

Because John must pack at least 35 boxes:

(number of tiny book boxes) + (number of large book boxes) = (at least) 35

x + y ≥ 35

 

Since John needs to pack at least 350 books:

 

(number of small books packed) + (number of large books packed) (is at least) 350

(number of small books per box)(number of boxes of small books) + (number of large books per box)(number of boxes of small books) ≥ 350

15x + 8y ≥ 350

 

Your system of inequalities is:

 

x + y ≥ 35

15x + 8y ≥ 350

<h2>GO INTO DESMOS TO GRAPH</h2>
7 0
3 years ago
Which fraction is not equivalent to the shaded area of the circle?
LuckyWell [14K]
Did this come with multiple choice answers?
4 0
3 years ago
Read 2 more answers
How many times does 5 go into 625
SIZIF [17.4K]

Athnswer:

Step-by-step explanation:

The number of times is = 625/5

= 125

4 0
3 years ago
Read 2 more answers
Answer as a fraction. do not include space in your answer.<br> 4 2/3 + 7/9
kvv77 [185]

Answer:

Step-by-step explanation:

4 2/3 = 14/3 x 3/3 = 42/9. 42/9 + 7/9 = 49/9. 49/9 = 5 4/9

42/9

3 0
3 years ago
Please help asap i will mark branlist
Rainbow [258]

Answer:

The answer is B

Step-by-step explanation:

7 0
4 years ago
Other questions:
  • T takes tristan 30 minutes to read 20 pages of her book. if she continues to read at this rate, how long will it take her to rea
    7·2 answers
  • A greeting card company can produce a box of cards for $7.50. If the initial investment by the company was $50,000, how many box
    10·1 answer
  • Double the points! Two part question!
    12·1 answer
  • A ball is thrown straight up from the top of a tower that is 280 ft high with an initial velocity of 48 ft/s. The height of the
    13·1 answer
  • Which of the following is NOT a from AGI deduction?
    9·1 answer
  • if a sprinkler waters 1/14 of a lawn in 1/2 hour, how much time will it take to water the entire lawn
    7·1 answer
  • speed of the wind Says IK back was into the wind. The trip back took 10 hours. Find the speed of the plane in still air and t le
    11·1 answer
  • The radius of Earth is 6,371.0 kilometers and the radius of Earth's Moon is 1,737.5 kilometers. What is the approximate differen
    6·2 answers
  • Pythorgorean Theorem ​
    12·1 answer
  • I would offer more points but i dont have anymore
    11·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!