3 years ago

I really need help big time thank you

Mathematics

1 answer:

Hunter-Best [27]3 years ago

5 0

1) 2x² -5x+12
2) x² +7x+10
3) 3x² +5x-2

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-4r-8(r-6)=7(5r-1)+8

KATRIN_1 [288]

Answer:

r = 1

Step-by-step explanation:

In this question, we have to solve for the vallue of "r". We will use the distributive property shown below to ease our process.

Distributive Property:

a(b+c) = ab + ac

Now, lets solve this:

$-4r-8(r-6)=7(5r-1)+8\\-4r-8r+48=35r-7+8\\-12r+48=35r+1\\48-1=35r+12r\\47=47r\\r=\frac{47}{47}\\r=1$

As we have seen the value of r is "1"

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3 years ago

A movie is 7 1 8hours long. After 45 minutes, how much of the movie is left?

kkurt [141]

Answer: 382.5 minutes

Step-by-step explanation:

7 1/8 = 7.125

7.125*60=427.5

Thus, the movie is 427.5 minutes long

427.5-45 = 382.5

Hope it helps <3

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3 years ago

Alan already baked five cakes and he can bake one cake with each additional stick of butter he buys with 10 additional sticks of

nevsk [136]

With 10 more butter sticks Alan can bake 15 cakes if I'm not mistaken

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3 years ago

You are standing 15 feet away from your friend's apartment building and look to see your friend at an angle of elevation of 72º.

Maksim231197 [3]

Answer:

15arctan(72°)

Step-by-step explanation:

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2 years ago

The temperature at noon was -17 degrees at 6 pm the temperature was -14 degrees. What was the change in temperature degrees?

irina [24]

Answer: the change in tempature was -3 degrees

Step-by-step explanation: hope this helps

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2 years ago