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tia_tia [17]
3 years ago
11

How do you solve a problem like this one 18x^2-15x-18

Mathematics
2 answers:
inna [77]3 years ago
8 0
Ok so this one can be factored like this first:
3(6x^2-5x-6)
Then you have to factor like you normally would for a complex one:
(Put aside the 3 for now just know it's there to make the problem easier)
6x^2-9x+4x-6
3x(2x-3)+2(2x-3)
Adding the 3 put aside now

3(3x+2)(2x-3) is the final factored answer
vfiekz [6]3 years ago
5 0
Solve the problem by factoring, the answer would be: 3(3x+2)(2x−3)


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A company sells each product they make for $84.00. They pay $2,100.00 in monthly costs such as rent and bills as well as $70.00
mel-nik [20]

Answer:

P=14x-2100

Step-by-step explanation:

<em>Since equations are not listed, i will simply figure out the correct answer.</em>

<em />

Profit is Income MINUS Cost.

The cost is a fixed cost of 2,100 per month.

Also a variable cost of 70 per unit (x), if x units sold, then variable cost would be "70x"

Total Cost = 2100 + 70x

Now, the income is from sales of each unit. Each unit sells for $84 and if x units sold, company's income would be:

84x

So, profit will be:

Profit = Income - Cost

Profit = 84x - (2100 + 70x)

Profit = 84x - 2100 - 70x

Profit = 14x - 2100

We can write the equation as:

P=14x-2100

6 0
3 years ago
I think I have the correct answers but will anyone try to solve these questions so I can see if we got the same answer.
Andre45 [30]

Because you seem to have an understanding of the material, I will write my math, but no explanations for my work. Comment on this answer for an explanation, or if I did something wrong.

1. Find the length of the South side of the field.

(5x+2)+(x^2-9)+(x^2-7x+12)\\5x+2+x^2-9+x^2-7x+12\\2x^2+5x+2-9-7x+12\\2x^2-2x+2-9+12\\2x^2-2x+5

2.Find the perimeter of the pumpkin field.

2(5x+2)+2(5x-2)\\(5x+2)+(5x+2)+(5x-2)+(5x-2)\\20x+4-4\\20x

3. Find the perimeter of the whole field.

2(4x+5x-2)+2(5x+2+x^2-9+x^2-7x+12)\\2(9x-2)+2(2x^2-2x-5)\\18x-4+4x^2-4x+10\\4x^2+14x+6

4. If x=30ft, what is the total perimeter?

P=4x^2+14x+6\\P=4(30)^2+14(30)+6\\P=4(900)+420+6\\P=1026ft

Random Tangent:

If you want to involve y in finding these answers for whatever reason, your math is going to get messy. Here's what I tried before I realized you could multiply each side by 2 to get the total perimeter:

xy+1+x+6=4x+5x-2\\xy-8x=-9\\x(y-8)=-9\\y-8=-\frac{9}{x}\\y=-\frac{9}{x}+8

Now the other side. This one's even worse.

xy-1+6x+x=5x+2+x^2-9+x^2-7x+12\\xy+9x-2x^2=5\\x(y+9+2x)=5\\2x+9+y=\frac{5}{x}\\y=\frac{5}{x}-2x-9

At this point, was realizing I wasn't going about the problem correctly, but did one last try by setting y=y. At this point in the equation, I simply had to stop, both due to complexity and technological problems.

\frac{5}{x}-2x-9=-\frac{9}{x}+8\\\frac{14}{x}=2x+17\\ 14=2x^2+17x\\0=2x^2+17x-13\\

I could possibly continue to solve, but I don't see a point. It was clear that this was NOT the right path to take finding the perimeter. It was here I realized that I could just multiply the two sides without y in them by 2 and--without as much difficulty--reach the correct answer.

6 0
3 years ago
Find the amplitude and period of the function <br><br> y=3/2 cos(4/3x)
Flura [38]
Amplitude : 2/3
Period : 3pi/2
6 0
3 years ago
Name a triangle with sides of 1.5 feet,3 feet,and 18 inches
mixer [17]
If I’m understanding the question correctly then the answer should be scalene
4 0
3 years ago
One leg of a right triangle has a length of 7 m. The other side have lengths that are consecutive integers. Find these lengths
Darina [25.2K]

Answer:

6 and 5

Step-by-step explanation:

Consecutive means that it is continuous, and since the triangle largest side (7) has to be less than the additive of two other sides. Therefore 6 and 5. Hope this helps.

4 0
3 years ago
Read 2 more answers
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