Answer:
<u>Part A: US$ 17</u>
<u>Part B : US$ 102</u>
Step-by-step explanation:
1. Let's check all the information given to us to answer the question correctly:
Dinner bill = US$ 85
Tip to the server = 20% of the bill
2. What’s the tip?
20% = 0.2
Tip to the server = 0.2 * 85
<u>Tip to the server = 17</u>
3. What’s the total of the dinner?
Total of the dinner = Dinner bill + Tip to the server
Total of the dinner = 85 + 17
<u>Total of the dinner = 102</u>
Step-by-step explanation:
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Answer:
the number is 5
Step-by-step explanation:
We have to find the equation to solve the problem.
Let the number be x
lets write one more than seven times the difference of a number and 4 in mathematical form
1. Difference of number and 4 will be written as x - 4
now
2. seven times the difference of a number and 4 will be written as
7*( x - 4)
3. one more than seven times the difference of a number and 4 is expressed as
1 + 7*( x - 4)
_____________________________________________
1 + 7*( x - 4) is equal to twice the difference of the number and 1
4. difference of the number and 1 is x - 1
5. twice the difference of the number and 1 is 2*(x-1)
Thus,
1 + 7*( x - 4) = 2*(x-1)
=> 1 + 7x - 28 = 2x -2
=> 7x - 27 = 2x - 2
adding 27 both sides
=> 7x - 27 + 27 = 2x - 2 + 27
=> 7x = 2x + 25
subtracting 2x from both sides
7x -2x = 2x + 25 - 2x
=> 5x = 25
dividing both side by 5
5x/5 = 25/5
x = 5
Thus, the number is 5 answer
F/45 - 2/9 = 2/9....add 2/9 to both sides
f/45 = 2/9 + 2/9
f/45 = 4/9 ...multiply both sides by 45
f = 4/9 * 45
f = 180/9
f = 20 <===
