Let the number of nickels be x, the number of dimes is x+8
but
1 nickel=$0.05
1 dime=$0.1
thus, the total amount Susan has will be:
0.05x+0.1(x+8)=3.05
0.05x+0.1x+0.8=3.05
0.15x=2.25
x=2.25/0.15
x=15
thus the number of nickels is 15
number of dimes is 15+8=23
Answer:
Equation to be solved: 2+3x=15.5
The solution we want is: 4.5 million
The solution for p is: p=4.5
Step-by-step explanation:
The problem says:
15.5 million is 2 million more than 3 times the population in 1950.
We can write this as an equation like this:
15.5 million = 2 million + 3(x million).
Each term contains the factor of million so if we divide both sides by a million the equation can actually be written as:
15.5 =2 + 3(x)
15.5 =2 + 3x
So the equation we need to solve is:
15.5=2+3x
We want to isolate 3x. To do this we need to subtract 2 on both sides:
15.5=2+3x
-2 -2
-----------------
13.5= 3x
Divide both sides by 3:
13.5/3 = 3x/3
Simplifying both sides gives:
4.5=x
So 4.5 million is the population in 1950's.
Answer: go to bitly and type
Step-by-step explanation: 3f3FcEi
B). 10.63
Because 7^2=49 and 8^2=64 then 49+64=113 then the square root of 113 is 10.63