3 years ago

HELP PLEASE 25 POINTS

Mathematics

1 answer:

scoundrel [369]3 years ago

3 0

Answer:

First is < 2nd is = 3rd is <

Step-by-step explanation:

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Use function notation to write the equation of the line

blondinia [14]

$f(x)=mx+b\to y=mx+b$

We have two points:

$(-3,\ 0);\ (-4,\ 7)$

The point slope form of the line:

$y-y_1=m(x-x_1)\\\\m=\dfrac{y_2-y_1}{x_2-x_1}$

Substitute

$m=\dfrac{7-0}{-4-(-3)}=\dfrac{7}{-1}=-7$

$y-0=-7(x-(-3))\\\\y=-7(x+3)\\\\y=-7x-21$

Answer:

$f(x)=-7x-21$

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3 years ago

Given that 2(-x + 4)=3 prove that x=5/2

user100 [1]

Answer:

x = 5/2

Step-by-step explanation:

So firstly, you want to distribute. It'll make your life much easier.

-2x + 8 = 3

-2x = -5 (subtracting 8 from both sides)

x = 5/2 (dividing both sides by -2 to obtain x)

Hope this helps :)

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3 years ago

Expand.<br> Your answer should be a polynomial in standard form.<br> (x - 2) (x – 6) =

andrew-mc [135]

Answer:

$x^{2} -8x+12$

Step-by-step explanation:

im pretty sure its this smack me if im wrong

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3 years ago

If 1/2x = a= 2/3y and x + y= na, what is the value of n?

Fynjy0 [20]

Answer:

Step-by-step explanation:

$\frac{1}{2} x=a=\frac{2}{3} y\\\frac{1}{2}x=a\\x=2a \\\frac{2}{3} y=a\\y=\frac{3}{2} a\\x+y=2a+\frac{3}{2} a=\frac{4a+3a}{2} =\frac{7}{2} a=na\\n=\frac{7}{2}$

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The Zamboni can resurface 1200 square feet per minute. How many minutes will it take the Zamboni to resurface the entire rink if

Alekssandra [29.7K]

Answer:

Step-by-step explanation:

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3 years ago