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Ksju [112]
3 years ago
11

Factor this trinomial 12x^2+8x-15

Mathematics
2 answers:
Verizon [17]3 years ago
8 0

Answer:

(6x - 5)(2x + 3).

Step-by-step explanation:

12x^2+8x-15

We use the 'ac' method:

12 * -15 = -180. We need two numbers whose product is -180 and whose sum is +8 ( to make the + 8x).  

These are  + 18 and - 10 so  we have:

12x^2 + 18x - 10x - 15    Now factor by grouping:

= 6x(2x + 3) - 5(2x + 3)   (2x + 3) is common to the 2 parts so:

= (6x - 5)(2x + 3).

fredd [130]3 years ago
3 0

Answer: (6x-5)(2x+3)

Step-by-step explanation:

6 and 2 are factors of 12

5and 3 are factors of 15

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Marta_Voda [28]

Answer:

560880

Step-by-step explanation:

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3 0
3 years ago
Solve the linear equation 2x+2/4=189.5
seraphim [82]
Change 2/4 to 1/2
<span><span>2x+<span>1/2</span>=189.5</span></span>
Subtract <span>1/2</span> from both sides(1/2 = .5)
2x=189
Divide both sides by <span>2</span>
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189/2= 94.5
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6 0
4 years ago
FIND PR.PLS HELP BRAINLIEST...
slega [8]

Answer:

6.2 units.

Step-by-step explanation:

We are given two angles and an opposite corresponding side. To solve for an unknown side, we can use the law of sines.

\frac{8}{sin(90)}=\frac{x}{sin(180-39-90)}=\frac{x}{sin(51)}

Cross multiplying and solving will get you this:

x=\frac{8(sin(51))}{sin(90}

Which can simplify to:

x=8(sin(51))

Which putting into a calculator gets you:

x=6.2

So the line PR is 6.2 units long.

6 0
3 years ago
3. E, F and G are collinear points. E is between F and G.
nikdorinn [45]

Answer:

<h2>A. 4 in</h2>

Step-by-step explanation:

Collinear points are points that lies on the same straight line. If the points E, F and G are collinear points, then the three points lies on the same straight line.

If E is between F and G, the FE+EG = FG

EG = FG - FE

Given FE = 3 in and FG = 7 in

On substituting into the expression above to get EG;

EG = 7in - 3in

EG = 4in

Hence the length of EG is 4in

5 0
3 years ago
Adam found a bag of money that he split with 22 friends.
olasank [31]

Answer:

x/23

Step-by-step explanation:

The bag of money can be represented by x

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1 + 22 = 23

x is divided by 23

x/23

~ Zoe

6 0
3 years ago
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