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Komok [63]
2 years ago
11

Help please! I just need to know how to do this step by step...

Mathematics
2 answers:
Alex787 [66]2 years ago
7 0

-8 - 5n = 64 + 3n

    +5n          +5n           add 5n to both sides, 5n's cancel out on the left.

______________

-8 = 64 + 8n

-64 -64                          subtract 64 on both sides, 64's cancel out on the right.

______________

-72 = 8n

___  ___                       divide 8 on both sides, 8's cancel out from the right.

 8      8

n= -9, final answer

pashok25 [27]2 years ago
3 0

Answer:

-8 - 5n= 64 + 3n

+8 +8

=0 =72

-5n= 72 + 3n

-3n -3n

-8n= 72 divide both sides by -8

n= -9

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Plz quick answer this is due tomorrow morning :(
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Answer:

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Step-by-step explanation:

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3 years ago
John is driving at a constant speed of 40 miles per hour. How long does it take him to travel 50 miles?
asambeis [7]

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1 hour and 15 minutes

or

1.25 hr.

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7 0
3 years ago
Read 2 more answers
Determine translation
Mandarinka [93]
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5 0
3 years ago
Write the five term sequence that would represent each recursive rule f(x) = f(x-1) -7; f(2) = 12
barxatty [35]

<u>Answer: </u>

Required five terms of sequence are 19 , 12 , 5 , -2 and -9 .

<u> Solution: </u>

Need to find the five terms of the sequence.

Given recursive rule is f(x) = f(x-1) -7

Substituting x = 2 , f(2) = f(2-1)-7

= f(2) = f(1) – 7    ------(1)

Also given that f(2) = 12.  

On substituting the given value of f(2) in eq (1) we get

12 = f(1) – 7

f(1) = 12 + 7 = 19

Using given recursive rule and given value of f(2) calculating f(3)

Substituting x = 3 ,  

f(3) = f(3-1) – 7  

= f(2) – 7  

= 12 – 7  

= 5

Using given recursive rule and calculated  value of f(3) calculating f(4)

Substituting x = 4,  

f(4) = f(4-1) – 7  

= f(3) – 7  

= 5– 7  

= -2

Using given recursive rule and calculated  value of f(4) calculating f(5)

Substituting x = 5,  

f(5) = f(5-1) – 7  

= f(4) – 7  

= -2– 7  

= -9

Hence required five terms of sequence are 19 , 12 , 5 , -2 and -9 .

8 0
3 years ago
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