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blondinia [14]
3 years ago
7

Need help with this

Mathematics
1 answer:
Vlada [557]3 years ago
3 0
A. $14.40 tip
\frac{18}{100}  =  \frac{x}{80}
18 × 80= 1440
1440 ÷ 100= 14.4

B. $6 sales tax
\frac{7.5}{100}  =  \frac{x}{80}
7.5 × 80 = 600
600 ÷ 100 = 6

C. $100.40 total
80 + 6 = 86
86 + 14.4 = 100.4
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Serggg [28]
1a) Some of the interior angles of a 15-gon must be 13 x 180=2340 degrees. Since it’s regular, the total is shared equally among the interior angles. 2340/15=156 degrees
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son4ous [18]

Answer:

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Please when you answer be sure cuz do you know the question that will let you know if you Fail or get a good mark. this question
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Answer:

C

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The interior angles of a triangle have measures (2x -5) degrees , (4x -1) degrees , and 30 degrees
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Umm... I really dont get maths in my brain. Dont mind me though :P . 
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