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
vitfil [10]
3 years ago
15

(5x2 + 2x - 1) + (4x2 - x -9)

Mathematics
1 answer:
Anastasy [175]3 years ago
7 0

Answer:

5  {x}^{2}   + 2x - 1 + 4 {x}^{2} -x - 9 \\ 5 {x}^{2}  + 4 {x}^{2}  + 2x - x - 1 - 9 \\  = 9 {x}^{2}  + x - 10

You might be interested in
Is 7 a factor of 56 or is 8 a factor of 56?
adelina 88 [10]
8 and 7 are both a factor of 56.
8 0
3 years ago
Read 2 more answers
Please help me y’all!!!!
DerKrebs [107]

Step-by-step explanation:

a^2 + 2(b - 6) - 17. a = -7 b = 2

= (-7)^2 - 2(2 - 6) - 17

= 49 - 4 + 12 - 17

= 40

6 0
3 years ago
Given f(x) = 2x – 3, find the x value such that f(x) = 8.
jok3333 [9.3K]

Answer: 5.5

Step-by-step explanation:

Plugging it into the formula, we get

2x-3 = 8

Add 3 to both sides:

2x = 11

Divide by 2 on both sides:

x = 5.5

4 0
3 years ago
Read 2 more answers
Which statement best describes the polynomial? 13y^8-4y^7+3y
Marina CMI [18]
Definitely B.  Note how the powers of y are presented in descending order by power:    y^8, y^7, y^1.

3 0
3 years ago
Read 2 more answers
6. Marisol plans to make 9 mini-sandwiches for
Oksanka [162]

Answer:

18/4

Step-by-step explanation: in order to get an equivalent ration just multiply both numerator and denominator by the same number

in this case I multiplied by 2 and got 18/4

3 0
3 years ago
Read 2 more answers
Other questions:
  • Two lines intersect in more than one point.
    10·1 answer
  • Micheal plays 1/5 of a song in 1/15 of a minute how Much time will it take for him to play the entire song?
    8·2 answers
  • Find the rectangular coordinates of the point ( -3, 1/2 π)
    5·1 answer
  • James usually drinks 38 ounces of water per day. He read that he should drink 64 ounces of water per day. If he starts drinking
    10·1 answer
  • find the difference in length between a walking stick and Bumblebee PLS HELP HURRY I KNOW ITS LATE BUT PLS HELP HURRY​
    7·1 answer
  • Find the area of the shaded region
    6·1 answer
  • Find the slope of the line containing the points (7,5) and (2, 4).
    13·2 answers
  • What’s the answer and how do you figure these out?
    10·1 answer
  • Solve.
    15·2 answers
  • If a1=1. And r=1/5 find a8
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!