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3 years ago

5

the cost of two sound systems were decreased by 10 the orginal cost of the systems were 90 dollars and 60 dollars which had a gr

eater percent of decrease

1 answer:

Alex Ar [27]3 years ago

3 0

I would say 60 cause 10% of 90 is 9 which is a difference of 81 while 10% of 60 is 6 which is a difference of 54.

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when asked to write a point slope equation for a line passing through the points (-3,-5) and (2,4) a student wrote y-4=-9/5(x-2)

Eduardwww [97]

(-3,-5)(2,4)
slope(m) = (4 - (-5) / (2 - (-3) = (4 + 5) / (2 + 3) = 9/5

y - y1 = m(x - x1)
slope(m) = 9/5
(2,4)...x1 = 2 and y1 = 4
sub
y - 4 = 9/5(x - 1)....this is the correct answer

the student figured the slope wrong....it is 9/5...not -9/5

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igor_vitrenko [27]

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Step-by-step explanation:

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For questions 1 and 2, use factoring to find the x-intercepts of these quadratic equations.

Marysya12 [62]

1.x^2 +6x - 4 = 6x
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2 years ago

Pls answer if u know :) <br><br> This is a very important homework and i was gone for days so idk

aliya0001 [1]

Answer:

Option B

Step-by-step explanation:

Slope of the line is calculated by the formula:

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

We have the points ( -2 , 4) and (3 , -5) so plug in the values in the formula:

$m=\frac{y_2-y_1}{x_2-x_1}\\\\m=\frac{-5-4}{3-(-2)}\\\\m=\frac{-9}{5}\\$

so the slope(m) equals -9/5

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Step-by-step explanation:

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