46/100
31/100
2 20/100
4 32/100
<u><em>Answer:</em></u>
Elena's running speed is 5 miles/hour
<u><em>Explanation:</em></u>
The speed is defined as the covered distance per unit time
<u>In the problem, we have:</u>
The distance covered is the length (circumference) of the circular track which is given as of a mile.
We are also given that she completes each lap (she completes of a mile) in of an hour
To get her speed, we will divide the distance covered by the time taken to cover this distance
<u>This is done as follows:</u>
speed = miles/hour
<u>This means that:</u>
Elena can run 5 miles each hour
Hope this helps :)
Answer:
If this is the way I was taught and how I took the question. 38/57 or 2/3
Step-by-step explanation:
19 * 2 = 38/
19* 3 = 57
38 ÷19 = 2/
57 ÷19 =3
so 2/3
There would probably be multiple ways to solve this, but I will only show you one of them.
First, we need to figure out how many tablespoons of the chemical solution it takes to decrease the number of bacteria in a gallon to 300. So we subtract 1200 by 300, to find the number of unnecessary bacteria, which is 900. Now we divide 900 by 75, which is 12. So it would take 12 tablespoons of the chemical solution to make a gallon have 300 bacteria.
There are 500 gallons, and we need to put 12 tablespoons of the chem-solution in each gallon. So we multiply 500 by 12, which is 6,000. Meaning that 6,000 tablespoons of chemical solution would be needed to make the 500-gallon tank have 300 bacteria per gallon.
W=-3 if you need any other help just message me