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3 years ago

LINEAR EQUATIONS! 7(6-y)=-3(y-2)

Mathematics

1 answer:

BartSMP [9]3 years ago

7 0

Answer:

y=9

Step-by-step explanation:

Isolate the variable by dividing each side by factors that dont contain the variables

move variable to left side and change its sign

42-7y+3y=6 collect like terms

-7y +3y=6-42

-4y=6-42

-4y=-36 divide both sides of the equation by -4

y=9

hope that helps :)

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What is lim x→3 x^2 - x - 6/ x - 3

Kisachek [45]

<h3>Answer: D) 5</h3>

=======================================================

Explanation:

If we plugged x = 3 into the expression, then we'd get x-3 = 3-3 = 0 in the denominator. That's not allowed. But we can simplify first

x^2-x-6 factors to (x-3)(x+2). The key here is that (x-3) is a factor. It cancels with the x-3 in the denominator

So, $\frac{x^2-x-6}{x-3} = \frac{(x-3)(x+2)}{x-3} = x+2$

Allowing us to say,

$\displaystyle \lim_{x \to 3}\frac{x^2-x-6}{x-3} = \lim_{x \to 3}\frac{(x-3)(x+2)}{x-3}\\\\\\\displaystyle \lim_{x \to 3}\frac{x^2-x-6}{x-3} = \lim_{x \to 3}(x+2)\\\\\\\displaystyle \lim_{x \to 3}\frac{x^2-x-6}{x-3} = 3+2\\\\\\\displaystyle \lim_{x \to 3}\frac{x^2-x-6}{x-3} = 5\\\\\\$

5 0

4 years ago

Find the equation of the line that

ad-work [718]

Answer:

Step-by-step explanation:

y - 5 = 1/2(x - 4)

y - 5 = 1/2x - 2

y = 1/2x + 3

5 0

4 years ago

Six times a number is at least four less than eight times the number. If x represents the number which will help the number

g100num [7]

"help the number ... ?"

6x ≥ 8x-4

Then 4≥2x, or 2≥x, or x≤2.

3 0

3 years ago

Evaluate f(x)=x-5 when x=-5,x=0,and x=5

svet-max [94.6K]

Answer:

f(x) = x - 5

f(-5) = -5 - 5

= -10

f(0) = 0 - 5

= -5

f(5) = 5 - 5

= 5

Hope this helps!

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3 years ago

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Tju [1.3M]

Answer:

Step-by-step explanation:

2x2x2x2=50

3 0

3 years ago