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Fantom [35]
3 years ago
5

Simplify (15x2 – 24x + 9) ÷ (3x – 3) = ?

Mathematics
2 answers:
Alina [70]3 years ago
8 0
Factor 15x^2-24x+9
we know that we are supposed to divide by (3x-3) so that might be one of the factors
(3x-3)(ax+y)
a must be 5 since 5 times 3=15
(3x-3)(5x+y)
y must be -3 because -3 times -3=9 so
(3x-3)(5x-3)
try to multiply and get
15x^2-15x-9x+9=15x^2-24x+9
true

now we have
[(3x-3)(5x-3)]/(3x-3)=(3x-3)/(3x-3) times (5x-3)/1=1 times 5x-3
answer is 5x-3







larisa86 [58]3 years ago
3 0
\frac{15x^{2} - 24x + 9}{3x - 3} = \frac{3(5x^{2}) - 3(8x) + 3(3)}{3(x) - 3(1)} = \frac{3(5x^{2} - 8x + 3)}{3(x - 1)} = \frac{5x^{2} - 5x - 3x + 3}{x - 1} = \frac{5x(x) - 5x(1) - 3(x) - 3(-3)}{x - 1} = \frac{5x(x - 1) - 3(x - 1)}{x - 1} = \frac{(5x - 3)(x - 1)}{x - 1} = 5x - 3
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Answer:

16 cm is the other side

Step-by-step explanation:

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7 0
3 years ago
1. Solve the system by using a table. 3y=4x+7 , -4x-4y=28. These are the possible solutions: A) (–4, –3), B) (–3, –4), C) (4, 3)
melisa1 [442]
<span>The first question:
3y=4x+7            (1)
-4x-4y=28          (2)

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I have attached the table since it's hard to make a table with text :P
As you can see, when x = -4, that is when the y-values are equal. That means that is the solution to the system of equations. Your answer is A) (-4, -3).

The second question:
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4x-4y=8       (2)
</span>
When you graph both equations, you will see that they intersect at D) (3, 1).

The third question:
We need to find the lines for revenues and expenses. 
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That would be during the month of C) August.

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Decimal Form:

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Step-by-step explanation:

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