Answer:
it is 70% full
Step-by-step explanation:
When it is 30 % empty it means it is 70% full
0.7x=0.3x+30
0.7x-0.3x=30
Answer:
1 DVD costs 15 cents.
I million DVDs cost 150,000 dollars.
Step-by-step explanation:
If 20 DVDs ------ $3
then, 1 DVD----------- x
20x = 3
x = 3/20
x = 0.15
1 DVD costs 15 cents
i already did this problem in one of my quizzes
Substitute x = 5 in the equation.
Therefore, the answer is -15 or last choice when x = 5.
Answer:
100,000
Step-by-step explanation:
70,000 people = 70% of the population.
Divide 70,000 by 70 to get the number of population per 1%:
70000 ÷ 70 = 1000
Therefore, 1000 people represent 1% of the population.
To calculate 100% of the population, multiply the number of people representing 1% by 100:
1000 x 100 = 100,000
Therefore, the population of the town = 100,000
A single stepping stone as you have said is 20 inches sqaure. This means that it has an area of 20.
All you would need to do then is multiply 20 by 30 to get the area of thirty tiles. The result of this would be 600.
If you mean one side of the stepping stone is 20 inches then you would multiply 20 by 20 to get the area of one, since that would be multiplying length times width (the area formula). The area of one would result in 400 and you would then multiply this by the thirty tiles (400 times 30) to get 12000.
