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Mathematics
Step-by-step answer
P Answered by Specialist

Step-by-step explanation:

3\left(x-4+1\cdot \:b\right)=8

\mathrm{Divide\:both\:sides\:by\:}3

\frac{3\left(x-4+1\cdot \:b\right)}{3}=\frac{8}{3}

\mathrm{Simplify}

x-4+b=\frac{8}{3}

\mathrm{Subtract\:}b\mathrm{\:from\:both\:sides}

x-4+b-b=\frac{8}{3}-b

\mathrm{Simplify}

x-4=\frac{8}{3}-b

\mathrm{Add\:}4\mathrm{\:to\:both\:sides}

x-4+4=\frac{8}{3}-b+4

\mathrm{Simplify}

x=-b+\frac{20}{3}

Mathematics
Step-by-step answer
P Answered by PhD

Cost of 7 gallons=$24.50

Cost of 1 gallon=24.50/7=3.5

Cost of 15 gallons=15*3.5=52.5

Cost of 15 gallons will be $52.5

Mathematics
Step-by-step answer
P Answered by PhD

For 1 flavor there are 9 topping

Therefore, for 5 different flavors there will be 5*9 choices

No of choices= 5*9

=45 

Mathematics
Step-by-step answer
P Answered by PhD

The answer is in the image 

The answer is in the image 
Mathematics
Step-by-step answer
P Answered by PhD

For every 8 cars there are 7 trucks

Therefore,

Cars:Truck=8:7

Answer is B)8:7

Mathematics
Step-by-step answer
P Answered by PhD

y=2x+15

where y=Value of coin

x=Age in years

Value of coin after 19 years=2*19+15

=$53

Therefore, Value after 19 years=$53

Mathematics
Step-by-step answer
P Answered by PhD

F=ma

where F=force

m=mass

a=acceleration

Here,

F=4300

a=3.3m/s2

m=F/a

    =4300/3.3

    =1303.03kg

Approximately it is aqual to 1300kg

Mathematics
Step-by-step answer
P Answered by PhD

The solution is given in the image below

The solution is given in the image below
Mathematics
Step-by-step answer
P Answered by PhD

The wood before starting =12 feet

Left wood=6 feet

Wood used till now=12-6=6 feet

Picture frame built till now= 6/(3/4)

=8 pieces

Therefore, till now 8 pieces have been made.

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