Answer:
f
Step-by-step explanation:
Y<3x-3 = 17÷398 because it will help you fond the answer. for example. 398 is the answer because. it was around for a few thousand years ago do have fun kiddo
Let's first determine the total number of the students.
=> 10 freshman
=>12 sophomores
=>15 juniors
<span>=> 30 seniors in the club. </span>
Since the adviser will only chose 1, let's add then divide by 4 to get the average.
=> 10 + 12 +15 + <span>30 = 67 students
</span>=> 67 / 4 = 16.75
OR close to
<span>=> 15/67</span>
Answer:
8 Liters
Step-by-step explanation:
Percentage of Alcohol in water= 2L X 0 =0
Percentage of Alcohol to be added = xL X 0.9 =0.9x
- New Volume =(x+2) Liters
- Desired Concentration = 0.72%
Therefore:
0+0.9x=0.72(x+2)
0.9x=0.72x+1.44
Collect like terms
0.9x-0.72x=1.44
0.18x=1.44
Divide both sides by 1.44
x=8 Liters
Therefore, Shanice must add 8 Liters of 90% alcohol solution to create the desired mixture
Answer:
Baseballs is: $10
Bats is: $4
Step-by-step explanation:
Let x represent bats
and y represent baseballs
So we have :
(1) 4x + 7y = 68
(2) x + y = 14 => y = 14 - x
Use substitution.
Substitute equation (2) into equation (1)
4x + 7(14 - x) = 68
Solve for x
4x + 98 -7x = 68
-3x + 98 = 68
-3x = -30
x = 10
Solve for y, replace x = 2 into equation (2)
y = 14 - 10 = 4, so y = 4
Since x represents bats and y represents baseballs, it cost $10 for the bats and $4 for the baseballs.