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
Andrej [43]
2 years ago
6

Given f(x) = 3x2 + 7x and g(x) = 2x2 - X - 1, find f(x) + g(x).

Mathematics
2 answers:
avanturin [10]2 years ago
7 0
I believe the answer is.

5x^2 + 6x - 1
Sever21 [200]2 years ago
6 0

f(x) is a fancy way of saying y. So for now I will refer to y.

f(x)

y=3x+2+7x

g(x)

y=2x2-x-1

3x+2+7x+(2x2)-x-1 = f(x)+g(x)

Now lets add

10x+2+4-x-1=f(x)+g(x)

9x+5=f(x)+g(x)

Brainliest/Heart would help

You might be interested in
Dharma and Jorge are looking at cell phone plans. A
riadik2000 [5.3K]

Answer:

Dharma and Jorge should purchase a group plan.

They could save $9.55

Step-by-step explanation:

A group plan will cost an average of $135.95 per month.

An individual plan will cost an average of $72.75 per month.

Two individual plans will cost an average of

\$72.75\cdot 2=\$145.50

per month.

Since $145.50 > $135.95,  Dharma and Jorge should purchase a group plan.

They could save

\$145.50-\$135.95=\$9.55

4 0
3 years ago
Solve <br><br> 9x-14-2x=5(2x-6)
deff fn [24]

9x-14-2x=5(2x-6)\qquad\text{use distributive property}\\\\(9x-2x)-14=(5)(2x)+(5)(-6)\\\\7x-14=10x-30\qquad\text{add 14 to both sides}\\\\7x=10x-16\qquad\text{subtract 10x from both sides}\\\\-3x=-16\qquad\text{divide both sides by (-3)}\\\\\boxed{x=\dfrac{16}{3}}

8 0
3 years ago
Simplify: <br><br> (-3i)(4i)(-5i)
Alecsey [184]
60i
if you go to mode on your calculator then Chang it from "real" to "a+bi" you can solve for unreal numbers. if you press "2nd" then "." it makes an "i"

4 0
3 years ago
How do you do number 6
3241004551 [841]
<span>g(f(x)) = g(-5x+4) = 4(-5x+4) + 5 = 21-20x</span>
6 0
3 years ago
Lee has a jar of 100 pennies. She adds groups of 10 pennies to the jar. She adds 5 groups. What numbers does she say?
kherson [118]
If Lee starts with 100 pennies and adds groups of 10, the operation is addition. Since she does this 5 times, there is 5 different numbers Lee said.

100 + 10 = 110
110 + 10 = 120
120 + 10 = 130
130 + 10 = 140
140 + 10 = 150

Thus, all of the numbers she said were 110, 120, 130, 140, and 150.


Hope this helps! :)

4 0
3 years ago
Read 2 more answers
Other questions:
  • When a pair of dice is rolled, what is the probability that the sum of the dice is 5, given that the outcome is not 6? The proba
    10·1 answer
  • Can someone please graph this and tell me what the slope is??
    6·1 answer
  • Anna has a 32 cm painting and another painting that is 12 cm longer than the first painting. How long would Anna's paintings be
    12·2 answers
  • If f(x) = -X^3+3x+2. Find f(-1).
    13·1 answer
  • Liz wants to buy her favorite musical group’s new cd. the cd costs $15.24, including tax. liz gives the store clerk a twenty-dol
    12·1 answer
  • The owner of an appliance store bought 15 washers at $279 each and 18 dryers at $229 each. How much did the dealer spend in all?
    15·1 answer
  • If x= -3 is the only x-intercept of the graph of a quadratic equation, which statement best describes the discriminant of the eq
    10·1 answer
  • If two lines are parallel, which statement must be true?
    5·2 answers
  • Can someone please help me. Will mark brainlist!
    12·1 answer
  • - 2d - 29 = 10 a easy question for your guys points lol
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!