Answer is 2.49 which you said you knew.
When you round up to hundredths, your goal is to determine if the number 2 places to the right of the decimal (hundredths) will get bigger or stay the same.
The rule is if the number to the right is 5 or bigger, you raise the hundredth place by 1. If the number is 0-4, leave it alone, no change.
Take this example, 2.48765.
The “8” is the hundredths place.
Does it get bigger or stay the same?
Look at the number to the right of 8, it is a 7.
If the number is 5 or bigger, you raise it by 1.
So your number becomes 2.49
Try it again. Let’s say your number is 2.49123,
we are looking at hundredths place again, so we are looking at the 9. Is the number to the right 5 or bigger? No, it is 0-4 so it does not change. Your number remains 2.49.
This works for any place, tenths, hundredths, thousandths, etc. Find your number that will change or stay the same, look to the number to the right and find out if it changes or not.
The answer is work
Work is equal to force times distance. if work is not constant over distance than it would required to solve integral where force is function of distance traveled. In this simple case, force is constant and the formula is:
W = F*D
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
Answer:
Step-by-step explanation:
Quotient
X^2+7x+4
The remainder is 1