Answer:
Step-by-step explanation:
Initial volume of juice = 48 ounces each
<u>Mark</u>
- Used: 48*3/4 = 36 ounces
- Left: 48 - 36= 12 ounces
<u>Steven</u>
- Used: 48*2/3 = 32 ounces
- Left: 48 - 32 = 16 ounces
<u>Total remaining juice:</u> 12 + 16 = 28 ounces
<u>Correct choices</u>: A, C and D
Answer: 28%
Step-by-step explanation:
23.04 - 18 = 5.04
5.04 is 28% of 18
2x+7=16
Katherine divided wrong. She shouldn't have divided by 2 because 7 isn't a multiple of 2; x+7≠16:2.
She should have proceed like that:
2x+7=16|-7
2x=16-7
2x=9
x=9:2
x=4,5
You add boys and girls together. 58+240=298
Answer:
P = 0.0909
Step-by-step explanation:
To know the number of ways or combinations in which we can select x elements from a group of n elements, we can use the following equation:
So, if you sat down at your computer and randomly loaded 4 of the 12 problems, there are 495 different possibilities and it is calculated as:
Then, from 495 different possibilities, there are 45 possibilities that both this problem and Richard Rusczyk's problem were among the four you loaded. This 45 possibilities are calculated as:
Because you need to select: this problem and there is only one, the problem that Richard Rusczyk wrote and there is only one, and 2 problems from the other 10.
Finally, the probability that both this problem and Richard Rusczyk's problem were among the four you loaded is equal to: