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
chubhunter [2.5K]
3 years ago
12

If f(x) = 2x2 + 7, find f(-3) = What’s the f(-3)

Mathematics
2 answers:
emmasim [6.3K]3 years ago
6 0
Answer:
43
Step by step:
f(x)=2x^2+7
f(3)=2(3)^2+7
f(3)=6^2+7
f(3)=36+7
f(3)=43
Allisa [31]3 years ago
5 0

Answer:

replace the x with -3

Step-by-step explanation:

if you ever have f(x) = 'insert equation' and then it says find f('insert number'), you replace what ever variable is after the first 'f' with the number after the second 'f'. hope this helped!

You might be interested in
HELPPP 22 POINTS
Hatshy [7]

Answer:

F' : (-5,5)

G' : (0,5)

H' : (0,9)

Step-by-step explanation:

<33

4 0
3 years ago
Read 2 more answers
Yesterday, Grace drove 2 1/8 miles. she used 1 1/4
prisoha [69]

Answer:

7/8

Step-by-step explanation:

3 0
3 years ago
Read 2 more answers
What number is 40% of 720
Zarrin [17]
You would have to set you problem up like
   x         40
____=_____
 720     100

you would multiply 40 by 720 then you would divide 28,800 by 100 your answer will be 288.
3 0
3 years ago
Kyle volunteered 5.5 hours at the library this week. He needs to volunteer a total of 12 hours. Which equation can be used to fi
CaHeK987 [17]
12-5.5=h hope it helps
5 0
3 years ago
In ΔEFG, the measure of ∠G=90°, EF = 95 feet, and FG = 26 feet. Find the measure of ∠F to the nearest degree.
Firdavs [7]

Answer:

74.4°

Step-by-step explanation:

Given

  • ∠G=90° => ΔEFG is a right triangle
  • EF = 95 feet
  • FG = 26 feet

Use sine law to find ∠F

As we know:

Sin(GEF)/ GF = Sin(EGF)/EF

<=> Sin(GEF) / 26 = Sin(90)/95

<=>Sin(GEF) / 26 = 1/95

<=> Sin(GEF)  = 26/95

<=> ∠GEF ≈ 15.8°

=> ∠F = 180° - ∠G - ∠GEF

∠F = 180° - 90° - 15.8° = 74.4°

3 0
2 years ago
Read 2 more answers
Other questions:
  • Mary can build 2 sand castles ( c ) in 4 hours ( t ). Write an equation in the form of c=rt that represents the relationship bet
    5·1 answer
  • What is the total price charged for goods that cost $7.50 and have a 4% sales tax? $0.30 $7.20 $7.80 $30.00
    15·2 answers
  • #16 What are the coordinates of S?
    10·1 answer
  • Answer questions 8 and 10. Show your work for 8 and explain for 10.
    10·1 answer
  • Solve x2 + 6x + 7 = 0.
    10·2 answers
  • The directions on a seed packet say to plant the seeds 178 inches apart. What is the decimal equivalent of this mixed number?
    8·1 answer
  • An increasing line has a slope of ¼ and passes through the point (10,-5). Where does it cross the y-axis?
    10·1 answer
  • We want to find the zeros of this polynomial:
    14·1 answer
  • Sebastian grew 21-3 inches each year for the past 3 years. How many inches total has Sebastian grown in the past 3 years?
    10·1 answer
  • 1. At a home improvement store, customers can rent a small cargo truck to transport any large
    5·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!