Answer:
36
Step-by-step explanation:
X equals 12, substitute X for 12
3(12)=36
Answer:
2x+23
Step-by-step explanation:
Set up two equations:
1st: P (for Price family) + J (for Jenkins family) = 45 hours
2nd: 20P + 35J = 1200 liters
Rewrite the first equation as P = 45 – J
Replace P in the second equation:
20(45-J) + 35J = 1200
Simplify:
900 -20J + 35J = 1200
900 +15J = 1200
Subtract 900 from both sides:
15J = 300
Divide both sides by 15:
J = 300/15
J = 20
Jenkins used theirs for 20 hours
Price used theirs for 45-20 = 25 hours.
Answer:
The answer is No.4
Step-by-step explanation:
Giventhat the formula of a cube is, V = x³ where x determine the length of the edge of the cube. By using this formula, you may find out the volume of a rubix cube :
x = 5.7cm
V = 5.7³
= 185.193cm³
The question ask us to find the volume of 2 combined cubes so, we can just multiply it by 2 :
V = 185.193 × 2
= 370.386cm³
Answer: He earned 43,344 a year and earned and earned 3612 a month
