01.12.2020

# Devon has been saving \$5 & \$10 for the past four years. Over spring break he wanted to see how much money he has saved up. After counting the money he calculated that he has a total of \$395 & had 49 bills. Based on this information, how many \$5 & \$10 bills does he have?

1

24.06.2023, solved by verified expert

19 five dollar bills

30 ten dollar bills

Step-by-step explanation:

x=number of \$5 bills

y=number of \$10 bills

x+y=49

x=49-y

5x+10y=395

substitute for x

5(49-y)+10y=395

245-5y+10y=395

245+5y-245=395-245

5y=150

5y/5=150/5

y=30

x=49-30=19

### Faq

Mathematics

19 five dollar bills

30 ten dollar bills

Step-by-step explanation:

x=number of \$5 bills

y=number of \$10 bills

x+y=49

x=49-y

5x+10y=395

substitute for x

5(49-y)+10y=395

245-5y+10y=395

245+5y-245=395-245

5y=150

5y/5=150/5

y=30

x=49-30=19

Mathematics

The total nom of  code that can be used is equal to 5+3 = 8

Mathematics

The answer is in the image

Mathematics

The solution is in the following image

Mathematics

The answer is in the image

Mathematics

F=ma

where F=force

m=mass

a=acceleration

Here,

F=4300

a=3.3m/s2

m=F/a

=4300/3.3

=1303.03kg

Mathematics

Salesperson will make 6% of 1800

=(6/100)*1800

=108

Salesperson will make \$108 in \$1800 sales

Mathematics

The solution is given in the image below

Mathematics

Here,

tip=18%of \$32

tip=(18/100)*32

=0.18*32

=\$5.76

Total payment=32+5.76=\$37.76

Mathematics

Speed=Distance/time

Here,

distance=15m

time=1sec

speed=15/1=15m/sec

Distance=Speed*time

time=15min=15*60sec=900sec

Distance travelled in 15 min=15*900=13,500m

=13500/1000 km=13.5Km

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