Answer:
4 liters of 5% and 16 liters of 17.5%
Step-by-step explanation:
Let quantity of 5% be x liters and of 17.5% be y liters
x+y=20 hence y=20-x
Introducing percentages
0.05x+0.175(20-x)=0.15*20
0.05x+3.5-0.175x=3
-0.125x=-0.5
Therefore, y=20-x=20-4=16
You need 4 liters of 5% and 16 liters of 17.5% to achieve 20 liters of 15% acid solution
Answer:
Step-by-step explanation:
1 13/18
Answer:pretty sure its 10 degrees
Step-by-step explanation:
all tris add up to 180, and this one is a right angle so you know you have 90 deg, 80 degrees. 90+80=170; 180-170=10
Answer:
27/40
Step-by-step explanation:
-9/4 ÷-10/3
-9/4 ×-3/10
27/40
Answer:
0.2793
Step-by-step explanation:
We are asked to convert 16° to radians.
#We know that 1° is equal to π/180 or 0.01745rad.
To convert any angle degrees to radians, we multiply it by π/180:
Hence, the radians equivalent of 16° is 0.2793