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kherson [118]
3 years ago
13

My little sister don't think I'm right so I need help to prove her right

Mathematics
1 answer:
Mazyrski [523]3 years ago
5 0
You are wrong. Totally, completely wrong.

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(8–9a)a=−40+(6–3a)(6+3a)
elena-14-01-66 [18.8K]

Answer:

a=-0.5

Step-by-step explanation:

Distributive property for left side, difference of squares for right side.

8a-9a^2=-40+36-9a^2

-9a^2 cancels out

8a=-4

a=-0.5

8 0
3 years ago
Read 2 more answers
Which expression is equivalent to 6x^2 + 13x + 5?
hodyreva [135]

The signs of the x-term and the constant term are both positive, so the signs of the constants in the binomial factors must be the same and must both be positive. The only offering that meets that requirement is

... C (2x+1)(3x+5)

_____

If you multiply that out, you get 6x² + 10x + 3x + 5 = 6x² +13x +5, as required.

The sign of the constant term is the product of the signs of the constants in the binomial factors: (+1)·(+5). We want a positive sign for the constant, so both binomial factor constants must have the same sign.

When the signs of the binomial factor constants are the same, the x-term constant will match them. Thus, for a positive x-term constant, both binomial factor constants must be positive.

3 0
2 years ago
Read 2 more answers
Question 8
borishaifa [10]

Answer:

y = ½x

Step-by-step explanation:

y = ½x

---------------

7 0
3 years ago
Simplify the following radicals (in exponential notation) (x^9y^6z^15)^1/3
MAVERICK [17]

\bf (x^9y^6z^{15})^{\frac{1}{3}}\implies \stackrel{\textit{distributing the exponent}}{\left(x^{9\cdot \frac{1}{3}}y^{6\cdot \frac{1}{3}} z^{15\cdot \frac{1}{3}} \right)}\implies x^3y^2z^5

8 0
3 years ago
Please help me please I need help asap
Rina8888 [55]

Answer:

First one

Step-by-step explanation:

4 0
2 years ago
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