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
cricket20 [7]
4 years ago
8

What is f(4) for the function f(x)=3x+7?

Mathematics
1 answer:
Zolol [24]4 years ago
5 0

Answer:

x=4

f(x)=3.4+7

f(x)=12+7

f(x)=19

Hope this helps.

You might be interested in
The larger of two numbers is 7 times the smaller number. 3 times the larger number is 7 more than 4 times the smaller number. Fi
zhenek [66]
So the larger number is x, and the smaller number is y
7y=x
3x=7+4y

(So plug in the 7y=x information into the second equation)

3(7y)=7+4y
21y=7+4y
17y=7
y=7/17
5 0
3 years ago
Can someone help me with this page please.
LenaWriter [7]

Answer:

1) positive

2) zero

3) positive

4) negative

5) negative

6) negative

7) 9

8) -5

9) 5

10) -23

11) -20

12) -20

13) 4,500- 4,800

6 0
4 years ago
Read 2 more answers
Simplify the expression please.
pishuonlain [190]

Answer:

tanx·secx

Step-by-step explanation:

To simply this, you can begin by factoring sin x out of the numerator to become:

\frac{sinx (sin^{2}x +cos^{2} x)}{cos^{2} x}

Now, using Pythagorean Trig Identities, we know that sin²x+cos²x equals 1. We can substitute this to make the equation become:

\frac{sinx}{cos^{2}x }

First of all, we can convert \frac{sinx}{cosx} to tanx. However, we have a remaining \frac{1}{cosx} which, using reciprocal identities, will become sec x.

Finally, we get our answer as tanx·secx.

4 0
4 years ago
Solve for x: 2/7 (x-2) =4c
shutvik [7]

Answer:

x=14c+2

Step-by-step explanation:

\frac{2}{7} (x-2)=4c \\\frac{2}{7}x-\frac{4}{7} =4c\\\frac{2}{7}x=4c+\frac{4}{7}\\\frac{2}{7}x= \frac{28c+4}{7} \\2x=28c+4\\x=14c+2

8 0
3 years ago
Dr North Piegans practice sees 125 cats. In 2010, 24.8% of cats were classified as obese, compared to 21.6% in 2011, what is the
pashok25 [27]
31 in 2010
27 in 2011
Thanks
3 0
3 years ago
Other questions:
  • Help please 50P wrong answer gets removed!!!!
    10·1 answer
  • In a circle with a radius of 6 ft, an arc is intercepted by a central angle of 2π3 radians.
    9·1 answer
  • Please help with number 8!
    5·2 answers
  • What information is found in the left column of a two column proof?
    15·1 answer
  • What is the perimeter of A’B’C’D’?
    7·1 answer
  • A circle has circumference 25.7 cm. what is the area of the circle? use 3.14 for Pie
    12·2 answers
  • What is 1 6/8 + 2 3/8
    12·2 answers
  • HELP! I will mark BRAINLIEST please!
    8·1 answer
  • Solving for a Variable when multiple variables present
    7·1 answer
  • Jayvie has a VIP membership to a movie theater, so she pays $27 a year and $6.00 for each movie she sees. Claire doesn't have a
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!