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m_a_m_a [10]
3 years ago
13

Factor this trinomial completely. 12x2 + 8x - 15

Mathematics
2 answers:
saul85 [17]3 years ago
8 0
My answer would be=8x+9
gtnhenbr [62]3 years ago
4 0

Answer:

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

Step-by-step explanation:

The numbers that <em>multiply </em>to give a\cdot{c}=12\cdot{-15}=-180 yet <em>add </em>to give b=8 are 18 and –10.

12x^{2}+8x-15\\12x^{2}+18x-10x-15\\6x(2x+3)-5(2x+3)\\(6x-5)(2x+3)

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The 7th-grade class took a survey on their favorite ice cream. 58 people said they prefer vanilla, while 28 people said they pre
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Answer:

a : b = 14 : 29

Step-by-step explanation:

Given:

Vanilla = 58

Chocolate = 28

Required

Represent as ratio

Let chocolate be represented with a and vanilla be represented with b

So, we have:

a : b

a : b = 28 : 58

Divide ratio by 2

a : b = 14 : 29

Hence, the required ratio is 14:29

3 0
3 years ago
A relationship between x and y is defined by the equation y=3x +1/2 which statements are true of this relationship? Select all t
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Answer:

a.

b.

d.

Step-by-step explanation:

4 0
3 years ago
Determine the lateral area of the rectangular prism.<br> 4.2 cm<br> 5 cm<br> 2.9 cm
Arturiano [62]

Answer:

(did you forget the picture?) if those numbers are the lengths of the prism just multiply them all.

multiply them to get 60.9

3 0
3 years ago
The bottom of a ladder leaning against a wall is 1.5 m from the bottom of the wall. The ladder is 5.5 m long. Find how high the
Svetach [21]

Answer: D.  5.3 m

Step-by-step explanation:

The ladder leaning against the wall causes it to forma  right angle.  

The right angle has two sides , which is  the two legs, and the hypotenuse.

Using the formula a^2 + b^2 = c^2 , a  and b are the two legs and c is the hypotenuse. In this case, a will be the wall, b will be 1.5 m  and the ladder which is 5.5 m will be the hypotenuse.  

Input the values for a and c to sole for b using the formula.

1.5^2 + b^2 = 5.5^2

2.25 + b^2 = 30.25

-2.25                 -2.25

   b^2 = 28

   b = \sqrt{28}

  b = 5.2915   rounded to one decimal place is the same as rounding it to the nearest tenth, and 5.29 rounded to the nearest tenth is 5.3.

7 0
3 years ago
Read 2 more answers
Amy opened a savings account with $1.350 she received for graduation. The account pays 4.3% simple interest. What is the balance
Yakvenalex [24]
This is the correct answer

6 0
4 years ago
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