Answer:
10 liters.
Step-by-step explanation:
Let the volume of 2% acid be x liters.
Then the volume of the 8% solution will be (x + 30) liters.
Work in amounts of pure acid: amount of acid in the 10% solution = 30 * 0.1
= 3. So we have the equation:
0.02x + 3 = 0.08(x + 30)
0.08x - 0.02x = 3 - 0.08*30
0.06x = 0.6
x = 10
So the answer is 10 liter of the 2% solution.
Answer:
A
Step-by-step explanation:
1 km = 0.621371 miles
so 5.067km = 3.1484 miles
That's one unit fraction
3.1484 miles / 225 mph = 0.139 hours to go around once
is a second unit fraction
then you can multiply that by 60 to get minutes 0.139 x 60 = 8.34 minutes
Answer:
OBTUSE
Step-by-step explanation:
We can determine this based on the the pythagorean theorem!
With Pythagorean Theorem, c is the longest length in the triangle... So, if c = a squared plus b squared, then it is a right triangle! If c is less, it is acute, and finally, if C is more than the two - then it is obtuse!
So let's see...
This is an OBTUSE triangle, since c adds up to be more than a and b.
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