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DaniilM [7]
4 years ago
14

Solve each equation

Mathematics
1 answer:
Darya [45]4 years ago
7 0

Answer:

r= 0

r= 1

b= -3

x= -3

Step-by-step explanation:

4r-8r=0

-4r=0

r=0

-15=-8r-7r

-15= -15r

r=1

3b+7-1=-3

3b= -3-7+1

3b= -9

b= -9/3

b=-3

3x+1-6x=7

-3x= 7-1

-3x= 6

x= -6/3

x= -3

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This is an exponential decay problem.

Using the equation Y = a *(1-rate)^time

where Y is the future value given as 12,000 and a is the starting value given as 13,000.

The rate is also given as 5%.

The equation becomes:

12,000 = 13,000(1-0.05)^x

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Divide each side by 13000:

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4 years ago
The principal of the school is looking over grade reports, specifically scores on math quizzes.
guapka [62]

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Please help me 
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Answer will help you.

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