Answer:
x = 12
Step-by-step explanation:
(10x - 20) + (6x + 8) = 180
16x - 12 = 180
16x = 192
x = 12
Hope this helped! :)
As this is an expression, not an equation, you cannot find a value for x. We can combine like terms, as follows:
x + (5x - 18 ) + 90
x + 5x - 18 + 90
6x - 72 or 6(x-12) : simplest form of this expression
Answer:
3.418 grams
Step-by-step explanation:
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Cost of month plan = $40
Cost of minutes used = $0.45 after 700 minutes
Total cost = $48.10
Let x be the total minutes used
Total cost = 40 + 0.45(x - 700)
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Form the equation and solve x
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40 + 0.45(x - 700) = 48.10
40 + 0.45x - 315 = 48.10
0.45x - 275 = 48.10
0.45x = 48.10 + 275
0.45x = 323.10
x = 323.10 ÷ 0.45
x = 718
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Answer: John had used 718 mins this month
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