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Pachacha [2.7K]
4 years ago
11

Find the value of x. (5x+15) (6x-10)

Mathematics
2 answers:
Annette [7]4 years ago
7 0

Answer:

We get x = -5/3 and x = -3

Step-by-step explanation:

(5x+15) (6x-10)

Multiplying this and equating to zero, to find x.

30x^{2} -50x+90x-150=0

30x^{2} +40x-150=0

Factoring out 10.

3x^{2} +4x-15=0

3x^{2} +9x-5x-15=0

3x(x+3)-5(x+3)=0[tex](3x-5)(x+3)=0[/tex]

We get x = -5/3 and x = -3

Blizzard [7]4 years ago
4 0
(5x+15)(6x-10)
= 30x^2 + 30x - 50x - 150
= 30x^2 - 20x - 150
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I would say the answer is A.
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3 years ago
PLEASE HELP I WILL MARK YOU BRAINLIEST PLEASE AND SHOW YOUR WORK (1) Jaime has 103 toys. He can fit a maximum of 9 toys into eac
Artist 52 [7]

Answer:

(1) 12 boxes (2) 1173  points

Step-by-step explanation:

(1) Jamie needs to fit all if his toys in the boxes, so you would need to do 103 times 9, making it 11.4. So, you'd need twelve boxes to fit all of he toys into boxes.

(2) The contestant earned 69 points, and each of those points are worth 17 points, meaning you have to do 17 times 69, which is 1173 .

3 0
4 years ago
3. In the figure below, find the values of x, y, and z.
Murrr4er [49]

Answer:

z= 13

x= 36

y= 18

Step-by-step explanation:

Solving for z.

We know that 108 degrees and (8z+4) are alternate exterior angles, so they are equal to each other.

We can set both of those angles equal to each other, and solve for our missing side, z.

108= 8z+4

104=8z

z= 13

Solving for x.

We know that 108 degrees and (3x) are alternate interior angles, so they would equal each other.

We can set both of these angles equal to each other, and solve for our missing side, x.

3x=108

x= 36

Solve for y.

We know that (4y) and (3x) are same side interior angles, so they would make 180 degrees. We know that (3x) would equal 108.

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3 0
2 years ago
(6x+3) (4x-5) (simp) I try to do this one and got the answer 24x^2-18x-15 but I was told it was wrong
Gemiola [76]

Answer:

(6x+3) (4x-5) = 24x^2 -30x +12x -15 = 24x^2 -18x -15

I get the same answer.  I guess we're both wrong?

Or do they want it reduced to:

8x^2 -6x -5


Step-by-step explanation:


8 0
3 years ago
Write a subtraction sentence where the difference is positive fuse a positive and negative integer​
Rainbow [258]

Answer

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Therefore if you subtract a negative number from a positive number, the result will be positive.

9-(-2)=11

brainliest?

8 0
3 years ago
Read 2 more answers
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