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Alex17521 [72]
3 years ago
15

Mason gave the waiter a $14.58 tip, which was 15 percent of the dinner bill. What was the amount of the dinner bill before he ad

ded the tip?
A. $9.72
B. $21.87
C. $97.20
D. $218.70
Mathematics
2 answers:
Black_prince [1.1K]3 years ago
6 0
C. You take the tip amount devided by 15%. Thats 0.15. You the get the answer 97.20
Kryger [21]3 years ago
6 0

Answer:

Option C.

Step-by-step explanation:

Let x be the total amount of the dinner bill.

It is given that Mason gave the waiter a $14.58 tip, which was 15 percent of the dinner bill.

x\times \frac{15}{100}=14.58

Multiply both sides by 100.

15x=1458

Divide both sides by 15.

\frac{15x}{15}=\frac{1458}{15}

x=97.20

The amount of the dinner bill before he added the tip is $97.20. Therefore, the correct option is C.

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solve for each variable i don’t need work shown just the answers please thank you very much i have 2 hours to get this done
ale4655 [162]

Answer:

(a)

x = 18.5

y = 22.5

(b)

x = 10

Step-by-step explanation:

Solving (a):

7x - 19 and 3x + 14 are interior angles.

So:

7x - 19 + 3x +14 = 180

Collect like terms

7x + 3x = 180 - 14 + 19

10x = 185

x = 18.5

7x - 19 and 5y - 2 are equal angles --- corresponding angles

So:

5y - 2 = 7x - 19

Make 5y the subject

5y  = 7x - 19+2

5y  = 7x -17

Make y the subject

y = \frac{1}{5} (7x - 17)

Substitute x = 18.5

y = \frac{1}{5} (7*18.5 - 17)

y = \frac{1}{5} (112.5)

y = 22.5

Solving (b):

The triangle is right-angled.

So:

5x + 3 + 2x + 17 + 90 = 180

Collect Like Terms

5x + 2x = 180 - 90 - 17-3

7x = 70

x = 10

3 0
3 years ago
A chemical company makes two brands of antifreeze. The first brand is 55 % pure antifreeze, and the second brand is 80 % pure an
Likurg_2 [28]

We have 55% and 80% antifreeze.  We need 90 gallons of 75%.  

F - 55% and E - 80%

A) F + E = 90

B) .55 F + .80 E = 67.50 (which is .75 * 90)  Multiplying A) by -.55

A) -.55 F -.55 E = -49.50 (which is -.55 * 90) then adding A) & B)

.25 E = 18

E = 72 gallons of 80% and

F = 18 gallons of 55%

********* DOUBLE CHECK ******************

72 * .80 = 57.60  and 18 * .55 = 9.90

57.60 + 9.90 = 67.50 gallons of antifreeze and we have 90 total gallons

(67.50 / 90) * 100 = 75% correct!

Source: 1728.com/mixture.htm


3 0
4 years ago
Solve for y.<br> 3x + 4y = z<br> -----------------
Georgia [21]

Answer:

y= z-3x/4

Step-by-step explanation:

4y=z-3x

y=z-3x/4

3 0
3 years ago
I needddddd helpppp itsss dueeeeeeeeeee TODAY
Nimfa-mama [501]

Answer:

Term and Coefficcent

Step-by-step explanation:

5 0
3 years ago
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Can someone help me with this please it would be a big help
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