3 years ago

Today only, a sofa is being sold at a 73% discount. The sale price is $178.20. What was the price yesterday?

Mathematics

1 answer:

Mrrafil [7]3 years ago

4 0

Answer: $660

Step-by-step explanation:

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H=7+44t-16^2

djyliett [7]

Answer:

$t_1\approx2.18$

$t_2\approx0.57$

Step-by-step explanation:

$h=7+44t-16t^2$

$27=7+44t-16t^2$

$0=-20+44t-16t^2$

$0=-16t^2+44t-20$

$t=\frac{-b\pm\sqrt{b^2-4ac}}{2a}$

$t=\frac{-44\pm\sqrt{44^2-4(-16)(-20)}}{2(-16)}$

$t=\frac{-44\pm\sqrt{1936-1280}}{-32}$

$t=\frac{-44\pm\sqrt{656}}{-32}$

$t=\frac{-44\pm4\sqrt{41}}{-32}$

$t=\frac{11}{8}\pm\frac{\sqrt{41}}{8}$

$t_1\approx2.18$

$t_2\approx0.57$

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2 years ago

Merrill bought m notebooks for $2.50 each and n pens for $1.25 each. Which expression best shows how much she spent?

kati45 [8]

Answer:

2.50m+1.25n

Step-by-step explanation:

4 0

2 years ago

The equation of line AB is (y−3) = 5 (x − 4). What is the slope of a line perpendicular to line AB?

Darina [25.2K]

Answer:

The perpendicular slope would be -1/5.

Step-by-step explanation:

This is because we can locate the slope of the original line as 5 (the number just outside of the x-coordinate parenthesis.

Then we know that perpendicular lines have opposite and reciprocal slopes. So we take the 5 and change the sign (-5), then we flip it (-1/5).

8 0

3 years ago

What is 5x55x6x8x9x9999-131,986,800+9000+1=

jenyasd209 [6]

1,187,888,284 hope this helped (:

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3 years ago

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What is the answer to this

goldenfox [79]

Answer:

Step-by-step explanation:

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3 years ago