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valkas [14]
2 years ago
12

Translate the following statement into an appropriate algebraic statement: The number of text messages sent times $0.15 plus the

number of minutes talked times $0.07 less a $2.50 discount will give the total cost for the cell phone bill this month.
A) $0.15t + $0.07m - $2.50 = C

B) t + m = $2.50

C) $0.15m + $0.07t = $2.50

D)$0.15m + $0.07t - $2.50 = C
Mathematics
1 answer:
Oxana [17]2 years ago
7 0
Actually the answers A since t is for text messages and it costs .15 and m is minutes and costs .07 so we add those two together to he .15t+ .07m then there's a discount of 2.50 so we subtract. So our final equation is .15t + .07m - 2.50 = C
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Vinil7 [7]

Answer:

(3,-1)

Step-by-step explanation:

So we have the system of equations:

3x+y=8\\2x-y=7

As directed, add straight down. The y-variable will cancel:

5x=15

Now, divide both sides by 5. The left cancels:

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So x is 3.

Now, substitute 3 for x in either of the equations:

3x+y=8

Substitute 3 for x:

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Multiply:

9+y=8

Subtract 9 from both sides:

y=-1

So, our answer is: x=3, y=-1 or (3,-1).

And we are done :)

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3 years ago
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marysya [2.9K]

Answer: The sequence does not have common ratio.

Step-by-step explanation:

By definition, a sequence with a constant ratio (common ratio) between terms is called a "Geometric sequence". In order to find the common ratio, it is necessary to divide any term in the sequence by the previous term.

In this case, given the sequence:

2,4,8,-16, 32, 64,

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4\div2=2\\\\8\div4=2\\\\-16\div8=-2\\\\32\div(-16)=-2\\\\64\div32=2

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Answer:

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Hope this helps!
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