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Sati [7]
3 years ago
14

Sarah wants to give the pizza delivery boy a 20 percent tip. If the pizza bill is $48.25, how much should she tip?

Mathematics
1 answer:
k0ka [10]3 years ago
4 0
48.25 x .20 = 9.65........................
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1. Justin’s car can travel 77.5 miles using 3.1 gallons of gas.
lisabon 2012 [21]
1)  Write this as a ratio...

77.5 miles / 3.1 gallons = x miles / 8.2 gallons

Solve for x... multiply by 8.2 gallons on both sides (that cancels it on the right) side of the equation.

8.2 gallons * 77.5 miles / 3.1 gallons = x
635.5/ 3.1 = x
211.83 miles = x

Justin travels 211.83 miles on 8.2 gallons of gas

2) If we let boys = b, then girls has to be b + 15 (since there are 15 more girls than boys).  Now together there are 85 members of the band so... boys + girls = 85  and since girls is b + 15, then...

b + b+15 = 85

Now solve for b.  First combine like terms...

2b + 15 = 85

Now subtract 15 from each side (cancels the 15 on the left)

2b + 15 - 15 = 85 - 15
2b = 70

Now divide each side by 2 (cancels 2 on the left)

2b / 2 = 70 / 2
b = 35

So there are 35 boys in the band.

Just FYI, that also means there are 35+15 = 50 girls.  Just so happens that 50 + 35 = 85 so our work checks!

 
4 0
3 years ago
Read 2 more answers
The formula Q = MCT we're Q = heat flow, M = mass, C = Specific heat, and T = change of temperature is used to calculate heat fl
Veseljchak [2.6K]

the answer must be t equal to Q over MC

6 0
3 years ago
What is the mean of 4,4,6,6,7,7,8,9,9,9,9,10. Need answer ASAP.
malfutka [58]
The mean would be 7.3

I hope that this helps you !
3 0
3 years ago
10.B. What number do you need to add/subtract/multiply/divide each side by in
Sindrei [870]

Step-by-step explanation:

step 1. m + 7.02 = 6.32

step 2. m = -0.70. (subtract 7.02 from each side)

5 0
3 years ago
What is -2(4g-3)=30 I can't figure it out so I need so help
timofeeve [1]

Answer:

g =  - 3

Step-by-step explanation:

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- 8g + 6 - 6 = 30 - 6

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\frac{ - 8g}{ - 8}  =  \frac{24}{ - 8}

g =  - 3

4 0
3 years ago
Read 2 more answers
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