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Alex777 [14]
2 years ago
7

Estimate a 10% tip on a bill of $143.17 by first rounding the bill amount to the nearest ten dollars.

Mathematics
2 answers:
Bogdan [553]2 years ago
7 0

Answer:

Step-by-step explanation:

143.17

round the bill to the nearest $ 10..

that would make it $ 140

a 10% tip......its the same thing as multiplying by 0.1

and when u multiply any number by 0.1 ur actually starting at the decimal ( or the end of the number) and move one space to the left.

examples :

10% of 245 = 24.5

10% of 5010 = 501

10% of 76 = 7.6

10% of 88.5 = 8.85 .....if there is a decimal, start at the decimal

so.....10% of 140

start at the end of the number and move 1 space to the left...

ur answer is 14 <==

REY [17]2 years ago
5 0
$14. Round $143.17 to $140. Multiply $140 by 0.1
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When y=7.5 x=2 what is the value of y when x is 2 1/4
swat32
<h2>Answer:</h2>

The value of y is 8.4375

<h2>Step-by-step explanation:</h2><h3>Known :</h3>
  • y = 7.5
  • x = 2

<h3>Asked :</h3>
  • The value of y when x is 2.25

<h3>Solution :</h3>

2/7.5 = 2.25/y

Do a cross multiplication,

2/7.5 = 2.25/y

=> 20/75 = 2.25/y

=> 75 . 2.25 = 20y

=> 168.75 = 20y

Reverse the equation,

168.75 = 20y

=> 20y = 168.75

Find the value of y,

20y = 168.75

=> y = 8.4375

<h3>Conclusion :</h3>

y = 8.4375

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