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3 years ago

(3a - b)(a + b) - (3a - b)²

Mathematics

1 answer:

natali 33 [55]3 years ago

5 0

The answer is 13a -2b

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(3x + 1) > -7+ 3x<br> Plz help me

Luda [366]

Answer:

0, -1

Step-by-step explanation:

This question was answered in another place since you asked it twice. Please refer to the other place that you asked the same question.

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3 years ago

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tangare [24]

Answer:

i think b

Step-by-step explanation:

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3 years ago

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Claire tried to evaluate 30x8 step by step

Sophie [7]

30x8
8x0=0
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30x8=240

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3 years ago

Which of the following rules describes the function graphed below?

lora16 [44]

Answer: Output = 8 − Input

Step-by-step explanation:

do 8 - each input value and you will get the output value

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3 years ago

Point a is at (-7,-7) and m is at (-6,-1) what are the coordinates of point b

AlekseyPX

Answer:

The coordinates of point b are (-5,5).

Step-by-step explanation:

Given:

Point a is at (-7,-7) and m is at (-6,-1).

So, to find the coordinates of point b.

Let a (-7,-7) be $(x_{1},y_{1})$ , m (-6,-1) and b $(x_{2} ,y_{2})$ .

Now, putting the formula to get the coordinates:

$m=\frac{x_{1}+x_{2}}{2} , \frac{y_{1}+y_{2}}{2}$

⇒ $(-6,-1)=\frac{-7+x_{2}}{2} , \frac{-7+y_{2}}{2}$

So, here we will make two equations to find the value of $x_{2} andy_{2}$ :

$-6=\frac{-7+x_{2}}{2}$

multiplying both sides by 2

⇒ $-12=-7+x_{2}$

⇒ $-5=x_{2}$

And, now same method for getting the value of $y_{2}$ .

$-1=\frac{-7+y_{2}}{2}$

multiplying both sides by 2

⇒ $-2=-7+y_{2}$

⇒ $5=y_{2}$ .

The value of $(x_{2} ,y_{2})$ = $(-5,5)$ .

Therefore, the coordinates of point b are (-5,5).

4 0

3 years ago