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Wittaler [7]
4 years ago
9

If 9a + 9b + 9c = 59a+9b+9c=5 ,what is 72a + 72b + 72c72a+72b+72c?

Mathematics
1 answer:
Gekata [30.6K]4 years ago
6 0

Answer:

40

Step-by-step explanation:

9a + 9b + 9c = 5

Multiply the equation by 8

8*(9a + 9b + 9c )= 5*8

Distribute

72a +72b +72 c = 40

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pens are bought at $0.95 per dozen and sold in groups of 4 for $2.25. find the profit of 15 dozen pens
kirza4 [7]
$9.60 because 4 times 3 is 12 so that’s 12 pens right there in 3 groups of 4 which 2.25 is the cost for one romp so 2.25 times 3 is 6.75 and u need 15 so 15-12 is 3 so u need 3 more and one pen cost 0.95 times 3 is 2.85 so that plus 6.75 is your answer for your profit of $9.60
3 0
3 years ago
Explain the difference in meaning between 8^2+2^2 and (8+2)^2
Tpy6a [65]
8^2 is 64 and 2^2 is 4. When you add them together you get 68.
(8+2)^2 is the same as 10^2 which is 100.
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3 0
3 years ago
Solve for x: (x+5)(3x-2)(23x)=0
Nookie1986 [14]

Answer: Hello Luv.......

Isolate the variable by dividing each side by factors that don't contain the variable.

Exact Form:

x=−5,23,0

Decimal Form:

x=−5,0.¯6,0

Step-by-step explanation:

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8 0
3 years ago
Identify Variables
loris [4]

Step-by-step explanation:

<u>Substitute x = 12 and y = 4 into the equations:</u>

<u>1.</u>

12 + 4 = 12

Incorrect.

<u>2</u><u>.</u>

12 + 4 = 4

Incorrect.

<u>3</u><u>.</u>

12 - 4 = 12

Incorrect.

<u>4.</u>

12 - 4 = 4

Incorrect.

All equations are incorrect when x and y are substituted.

7 0
2 years ago
What's the surface area of the square pyramid?? <br><br> Please someone answer fast
Eddi Din [679]

Answer:

33

Step-by-step explanation:

The base/square:

3*3 = 9

The sides:

(3*4)/2 = 6

4 sides:

6*4 = 24

Total:

24+9=33

8 0
4 years ago
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