2(9x + 3) + 5x = 48 + 2x
18x + 6 + 5x = 48 + 2x
23x + 6 = 48 + 2x
23x - 2x = 48 - 6
21x = 42
x = 42/21
x = 2
Answer:
40 mL of 10% acid
80 mL of 25% acid
Step-by-step explanation:
x = volume of 10% acid solution
y = volume of 25% acid solution
Total volume is:
x + y = 120
Total amount of acid is:
0.10 x + 0.25 y = 0.20 (120)
Solve by substitution.
0.10 x + 0.25 (120 − x) = 0.20 (120)
0.10 x + 30 − 0.25 x = 24
0.15 x = 6
x = 40
y = 80
Answer:
x = 15
Step-by-step explanation:
2x+10+4x+80=180
or, 2x+4x=180-80-10
or, 6x=90
or, x=15
Answered by GAUTHMATH
Answer:
Kindly check explanation
Step-by-step explanation:
Given the following instructions :
It can be deduced from part a that the final result will be twice the original number 'n'
The number 'n' multiplied by 4 = (4 * n) = 4n
10 added to 4n = 4n + 10
The result of the sum divide by 2 = (4n + 10) / 2
= 2n + 5
5 subtracted from the result of the quotient obtained : 2n +5 - 5 = 2n
Where n is the original number.
2n = twice the original number.
Answer:
Your friend is correct.
Step-by-step explanation:
He is right because 70 is ten times greater then 7 and the question is if the 7 in the hundredths which equals 70, is 10 times greater than the 7 in the thousandths, which is equal to 7. (7 X 10 equals 70.) Hope this helps! :)