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
Viefleur [7K]
3 years ago
11

Add: 2x² - 8x -9 and 3 x² + 8x-2​

Mathematics
2 answers:
Delvig [45]3 years ago
6 0

Answer:

<h2>5x^2 - 11</h2>

Step-by-step explanation:

We got to add these together so

2x^2-8x-9+3x^2+8x-2

the 2x^2 and 3x^2 add to 5x^2

the 8x and -8x cancel each other out

the -9 and -2 add to -11

so..

5x^2 - 11

I hope this helped :)

krek1111 [17]3 years ago
5 0

Answer:

5x²-11

Step-by-step explanation:

2x²-8x-9+3x²+8x-2

2x²+3x²-8x+8x-9-2

5x²-11

hope it helps you

please mark me as brainlist

You might be interested in
A rectangle has side lengths 2x + 3 and 5x - 2.
xz_007 [3.2K]

Answer:

10x² + 11x - 6

Step-by-step explanation:

The area (A) is the product of the sides, that is

A = (2x + 3)(5x - 2) ← expand using FOIL

   = 10x² - 4x + 15x - 6 ← collect like terms

   = 10x² + 11x - 6

5 0
3 years ago
Little Miss Buffet takes all the money from her piggy bank and puts it into a savings account at her local bank. The bank promis
Dmitriy789 [7]
I am pretty sure that you are correct.
4 0
3 years ago
Write the first five terms of the sequence. an=n2 +2​
Alla [95]

Answer:

The first five terms of the given sequence

3, 6, 11, 18, 27

Step-by-step explanation:

It is given that,

an=n² +2​

<u>To find the first five terms</u>

a₁ = 1² + 2 = 1 + 2 = 3

a₂ = 2² + 2 = 4 + 2 = 6

a₃ = 3² + 2 = 9 + 2 = 11

a₄ = 4² + 2 = 16 + 8 = 18

a₅ = 5² + 2 = 25 + 2 = 27

Therefore the first five terms of the given sequence

3, 6, 11, 18, 27

4 0
3 years ago
Can someone help me on this
Ierofanga [76]

1/2 of angle D is given as 32 degrees.

The 3 inside angles need to add up to 180 degrees.

Angle B is a right angle, which is 90.

Angle C = 180 - 90 - 32 = 58 degrees.

8 0
3 years ago
How do i calculate the increase in percent after a year?
iren2701 [21]
  1. divide the larger number by the original number .
  2. subtract one from the result of the division
  3. multiply this new number by 100
  4. divide the percentage change by the period between the two numbers
  5. you now have the percentage increase over time

5 0
2 years ago
Other questions:
  • Heleleppepepepepepepepep pleaee
    10·1 answer
  • Which is the best unit for measuring the weight of an elephant?
    5·1 answer
  • Which of the following is equivalent to |X-1|&lt;5?
    10·1 answer
  • STOP!
    8·1 answer
  • Points P and Q ∈ MN , MP = 2, QN = 5 and MN = 12. The distance from M to the midpoint of PQ is: (A) 5.5 (B) 3 (C) 4.5 (D) 6
    11·2 answers
  • Cami bought a pack of 6 books for $18.48. what was the unit price
    13·2 answers
  • Find 20-24 using the picture provide
    15·1 answer
  • Alexandra is following a recipe that requires 3/4 a cup of water she needs to make 10 servings how many cups of water does Alexa
    6·1 answer
  • Sarina borrowed $5,800 at a simple interest rate of 7½% per year. After a certain number of years she had paid $1,305 in interes
    14·1 answer
  • A light rye bread requires a ratio of wholemeal flour to plain flour of 4:3. A baker making a
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!