Answer:
49
Step-by-step explanation:
7 times 4 equals 49.
The first thing we must do for this case is to define variables:
x: the total mass of the chemical in the container
y: a sample of a chemical from a container
We have the following equation:
y = (3/10) x - 5 3/4
Then, for y = 39.1 we have:
39.1 = (3/10) x - 5 3/4
Clearing x:
(3/10) x = 39.1 + 5 3/4
(3/10) x = 44.85
x = (10/3) * (44.85)
x = 149.5 grams
Answer:
the total mass in grams of the chemical in the container before the scientist removed the sample of 39.1 grams was:
x = 149.5 grams.
The number u looking for is 28
Answer:
24
Step-by-step explanation:
78-30=48
48/2=24
each one is 24kg
Answer:
Step-by-step explanation:
v = 45 * 12
v = 540cm³
To fill the tank,
v = 45 * 25
v = 1,125cm³
I'm not quite sure what the exact question is so i'll answer both;
1.) The volume of water required to fill the tank from empty = 1,125cm³
2.) The volume of water required to fill the tank from it's current level is
1,125cm³ - 540cm³ = 585cm³
