2 years ago

Need help pls ASAP I really need help pls

Mathematics

1 answer:

Kaylis [27]2 years ago

6 0

D the slopes are negative reciprocals

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Urgent!!! PLEASE HELP, FAST!!!

gayaneshka [121]

The best way to solve this is to put it into a proportion:
$\frac{x}{84} = \frac{ \frac{1}{4} }{ \frac{3}{4} }$
So you cross multiply to get:
$21= \frac{3}{4} x$ (the 21 is from $\frac{1}{4}$ •84)
Then multiply by $\frac{4}{3}$
And you get $28, so the reduced price would be $28.

6 0

3 years ago

What is the slope of the line that passes through the points ( − 1 , − 7 ) (−1,−7) and ( 1 , − 13 ) (1,−13)? Write your answer i

Paraphin [41]

Answer:

$y = -3x -10$

Step-by-step explanation:

Slope-intercept formula: $\frac{y_2-y_2}{x_2-x_1}$

Find slope of (−1, −7) and (1, -13)

$\frac{y_2-y_2}{x_2-x_1}\\\\\\frac{-13-(-7)}{1-(-1)}\\\\\\frac{-6}{2}\\\\\-3$

$y = mx + b$

$y = -3x +b$

$y = -3x +b\\-7 = -3(-1) + b\\-7 = 3 +b\\-3 -3\\-10 = b$

$y = -3x -10$

Hope this helps!

3 0

2 years ago

A store sells ice cream with assorted toppings. they charge $ 3.00 for ice cream plus 0.50 per ounce of toppings.

aev [14]

Answer:7 ounces

Step-by-step explanation:

If they charge 0.50 cents per ounce then u would take the 50 cents and add that up until it gets to 3.50 and that will give u 7 so the answer is 7 ounces.

8 0

3 years ago

(8.99x10^15) in standard form

Hoochie [10]

8990000000000000 i think

5 0

3 years ago

7+77+7+7+7+7+7++7+7+7+7+7+7+6-6-6-6-6-6

Irina-Kira [14]

Step-by-step explanation:

It is easy

You can do by calculater