Answer:
54 gallons
Step-by-step explanation:
Let x represent the volume of the full tank.
When the water tank is 30% full;
= 30% of x = 0.30x
when it is 20% empty:
= x - 20% of x = x - 0.20x = 0.80x
The difference is given as 27.
So, we can represent the question on an equation as;
0.80x - 0.30x = 27
Solving the equation, we have;
0.50x = 27
x = 27/0.50
x = 54 gallons
The tank can hold 54 gallons when it is full.
Answer:
4.52 x 10
Step-by-step explanation:
45.2 in scientific notation, move the point one place to the left , it becomes
4.52 x 10
Given: Earning of Arthur in three weeks = $136
Let x be the money he earn in one more week.
If he needs at least $189 to buy the new coat that he wants for school.
Then it gives the inequality
Subtract 136 from both sides of the inequality, we get
Hence, Arthur must earn $ 53 in the next week.
The first eqaution is multiplying the first number by 5 then the next is multiplying the first number by 6 then 7 i believe the last one would be 8x8 which is 64