2 years ago

HELPPPPP I DONT UNDERSTANDDDD

Mathematics

1 answer:

max2010maxim [7]2 years ago

5 0

This is how you do it hope this helps.

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Your parents decide that they will help you out the first two months you are at college

vlada-n [284]

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Step-by-step explanation:

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2 years ago

27^x = 9^x − 4 Question 1 options: x = 8 x = 4 x = −4 x = −8

Mariulka [41]

Answer:

x = -8

Step-by-step explanation:

Given the equation:

$27^x=9^{x-4}$

Note that

$27=3^3\\ \\9=3^2,$

then

$27^x=(3^3)^x=3^{3x}\\ \\9^{x-4}=(3^2)^{x-4}=3^{2(x-4)}$

Rewrite the equation as

$3^{3x}=3^{2(x-4)},$

then

$3x=2(x-4)\\ \\3x=2x-8\\ \\3x-2x=-8\\ \\x=-8$

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3 years ago

Evaluate 5x – 2y + (7x – y) for x = 7 and y = –2

Lynna [10]

Answer:

Step-by-step explanation:

5x – 2y + (7x – y)

Combine like terms

12x -3y

Let x = 7 and y = -2

12(7) -3(-2)

84 +6

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2 years ago

Read 2 more answers

Need help! Not sure what exactly is going on here!

marishachu [46]

Answer:

idk

Step-by-step explanation:

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3 years ago

When a number is a multiple of 6 what are possible values of the ones digit

umka21 [38]

6,2,8,4,and 0 are the only possible value of the ones digit, because
6*1=6, last digit is 6
6*2=12, last digit is 2
6*3=18, last digit is 8
6*4=24, last digit is 4
6*5=30, last digit is 0
6*6=36, last digit is 6
and the whole cycle goes over again.

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3 years ago