MATHEMATICS HIGH SCHOOL

Select the correct product. (2x + 9)(x + 1) 2x2 + 11x + 9 3x2 + 11x + 9 2x2 - 7x + 9 2x2 + 11x + 10

Answers

Answer 1

Answer: the answer is 2x^2+ 11x+9

Answer 2

Answer:

Answer:

The answer is 2x^2+ 11x+9

Step-by-step explanation:

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Using only the values given in the table for the function f(x) = –x3 + 4x + 3, what is the largest interval of x-values where the function is increasing?
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Simplify 15 + 6(x + 1).

Answers

15 + 6(x + 1)

First, expand to get rid of parentheses.
$15 + 6x + 6$
Second, simplify. Keep your 6x and add 15 + 6.
$6x + 21$

Answer: 6x + 21

first you use the distrbutive property and multiply 6 by x and 6 by 1 then you get 15 + 6x + 6 now add 15 and 6 together and you get 21 + 6x as your answer

Two rival cleaning companies charge to dust houses. Captain Dustsalot charges $20 per house call plus $12 per room, andDedusters charges $30 per house call plus $10 per room. Abigail wants to know how many rooms she must get dusted so
that Captain Dustsalot is more expensive than Dedusters. Which inequality should she use to figure this out if represents
the number of rooms she gets dusted?

Answers

Answer:

Your answer is:

$20+12r>30+10r$

Step-by-step explanation:

Hope this helped : )

Which expression represents 8 less than two times x? A)2x -8. B)8 - 2x C) 8x - 2. D) 2 - 8x

Answers

A is the answer because the two is being multiplied by the x and the eight is being subtracted from that product.

8 less than two times x.

8 less than 2*x

8 less than 2x

= 2x - 8.

Option A.

Devin volunteers at Big Pup Rescue. He is mixing up shampoo solution for the dog washing station. He needs 2 cups of shampoo concentrate for every 9 cups of water. Devin will use 36 cups of water.How much shampoo concentrate should Devin add to the water to make the shampoo solution?

cups of shampoo concentrate

Answers

Answer:

8 Shampoo Concentrate

Step-by-step explanation:

There's a ratio of 9:2 so for every 9 cups of water there's two cups of shampoo concrete.

We'll need 9 multiplied by 4 is 36

so we need to multiply 2 with 4

4 multiplied by 2 is 8

Answer:

8. is the answer

Step-by-step explanation:

Its in the attachment

Answers

The correct answer is 768 bulbs because what you have to do is, first, is find out the pattern. For the first year he reproduces six bulbs, and the second year he produces 12 bulbs the pattern is, the year before times 2

How to solve 9x+5=28
-3x-10y=-26 by Elimination

Answers

so elimination
I assume that you meant to write
9x+5y=28 and not 9x+5=28
so

elimination is basically eliminating values

9x+5y=28
-3x-10y=-26
we can either cancel out the x terms or the y terms, I will cancel out the y terms

9x+5y=28
multipy both sides by 2
18x+10y=56
add to other equation

18x+10y=56
-3x-10y=-26 +
15x+0y=30
15x=30
divide both sides by 15
x=2

subsitute

9x+5y=28
9(2)+5y=28
18+5y=28
subtract 10 from both sides
5y=10
divide both sides by 5
y=2

x=2
y=2

9x + 5 = 28
      - 5   - 5
      9x = 23
   9 9
      x = 2⁵/₉

-3(2⁵/₉) - 10y = -26
    -7²/₃ - 10y = -26
+ 7²/₃    + 7²/₃
-10y = -18¹/₃
   -10 -10
   y = 1⁵/₆
   (x, y) = (2⁵/₉, 1⁵/₆)

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