Length=3width-5
(2(x))+(2(3x-5)=46
2x+6x+10=46
8x=56
x=7
width=7 length=16
The answers are: 4.5 g and 56.25 g respectively.
Since the first type of measurement in this question is weight or mass, I'll suppose that the percentage concentration is % mass/mass. For that type of concentration measurement, just multiply the percentage by the total mass to get the mass of the wanted material.
So 150 g * 3% = 150 g * 0.03 = 4.5g
For the 8% solution with the same amount of dry substance, use the ratio of percentages, multiplied by the mass of the first solution to get the wanted amount of new solution:
3/8 * 150 g = 56.35 g
Answer:
Step-by-step explanation:
I the given problem, there should be 32 in place of 35.
Answer:
Answer: 13.2J
Step-by-step explanation:
- m= 3kg, h= .45m, g=9.8 m/s
find formula for determining potential energy:
- P=mgh
plug numbers into equations, replacing variables:
- (3kg)(9.8)(.45)
Answer:
282.5 Dollar
Step-by-step explanation:
3 x 7.50
7.50 + 7.50 + 7.50 = 22.5
305 - 22.5 = 282.5
