Taking the 3 solutions as 3 different terms, we can create an equation as follows:
Solution 1 : 10mL with 20% acid
Solution 2 : 30mL with x% acid
Solution 3 : 40mL with 32% acid
Since solution 1 + solution 2 = solution 3, let us substitute the given values we have:
10(0.2) + 30(x) = 40(0.32)
2 + 30x = 12.8
To solve for the unknown concentration x, we subtract 2 from both sides:
2 + 30x - 2 = 12.8 - 2
30x = 10.8
Dividing both sides by 30:
30x/30 = 10.8/30
x = 0.36
Therefore the unknown solution is 36% acid.
Answer: At x= 25 there is a break even point .
Step-by-step explanation:
Let the number of CDs be x
For the case of iTunes,
Cost of each CD = $12
For the case of Best Buy,
Number of CDs of free of cost = 5
Number of CDs more than 5 = $15
We need to find the "Break even point ":
According to question,
Hence, At x= 25 there is a break even point .
Answer:
3.6
Step-by-step explanation:
stupid idiot you add them up together go back to 4th grade
The blank is 3.
What the question is assessing is the distributive property. The 3 term gets distributed to the 6 and the -2, which means it the 6 and the -2 are multiplied by 3.
It is 7
2*2x = 4x + 2 = 30
4x = 28
x = 7
