Answer: Its d
Step-by-step explanation: the rival school has more of a variation if its avg deviation is larger.
Answer:
4x+8
Step-by-step explanation:
Answer:
$225
Step-by-step explanation:
You add 150 and 75 which equals 225
Solution:
Let the volume (in litres) of acids used be:
x1=amount of 25% acid
x2=amount of 40% acid
x3=3*x2=amount of 60% acid
If you were to write an equation for this it would be:
3x+15=51
(subtract 15 from both sides)
3x=36
(divide each side by 3)
x=12
So on Monday, Wednesday and Friday she swims 15 laps.