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2 years ago

What's the answer for a decrease of 39 points

Mathematics

1 answer:

Temka [501]2 years ago

3 0

I would think it would be just -39 points

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2 years ago

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sineoko [7]

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2 years ago

Read 2 more answers

6. -20 + -2m Can u help me

stellarik [79]

Answer

Step-by-step explanation:

Replace all occurrences of

−

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4 0

2 years ago

Find an equation for the line that passes through the points (5.-5) and (-4,-2)

ANEK [815]

Answer:

$\large\boxed{y=-\dfrac{1}{3}x-\dfrac{10}{3}\to x+3y=-10}$

Step-by-step explanation:

The slope-intercept form of an equation of a line:

$y=mx+b$

m - slope

b - y-intercept

The formula of a slope:

$m=\dfrac{y_2-y_1}{x_2-x_1}$

We have the points (5, -5) and (-4, -2).

Substiute:

$m=\dfrac{-2-(-5)}{-4-5}=\dfrac{-2+5}{-9}=\dfrac{3}{-9}=-\dfrac{1}{3}$

Put the value of the slope and the coordinates of the point (5, -5) to the equation of a line:

$-5=-\dfrac{1}{3}(5)+b$

$-5=-\dfrac{5}{3}+b$ add 5/3 to both sides

$-\dfrac{15}{3}+\dfrac{5}{3}=b\\\\-\dfrac{10}{3}=b\to b=-\dfrac{10}{3}$

Finally we have the equation of a line in the slope-intercept form:

$y=-\dfrac{1}{3}x-\dfrac{10}{3}$

Convert to the standard form (Ax + By = C):

$y=-\dfrac{1}{3}x-\dfrac{10}{3}$ multiply both sides by 3

$3y=-x-10$ add x to both sides

$x+3y=-10$

4 0

3 years ago

What is the result of the operation

Anna35 [415]

Answer:

Step-by-step explanation:

-2*-3=6 -2*5=-10. -2*1=-2

-2*8=-16. -2*-2=4. -2*3=-6

-2*2=-4. -2*1=-2. -2*-4=8

6 0

2 years ago