7.2 is the answer i hope that helps!!!!!!!!!!!
15, look at the attachment for work
Answer:
11
Step-by-step explanation:
8 plus 3 i dunno know if it is forsure but yeah.
Answer:
0.25 L at 0.1% and 0.75 L at 0.22%
Step-by-step explanation:
We have to:
percent quantity
Salt solution # 1 0.1 x L
Salt solution # 2 0.22 (1 - x) L
Mixture 0.19% 1
We are left with the following equation:
0.1 * x + 0.22 * (1-x) = 0.19 * 1
solving:
0.1 * x + 0.22-0.22 * x = 0.19
0.1 * x- 0.22 * x = 0.19 - 0.22
-0.12 * x = -0.03
x = -0.03 / -0.12
x = 0.25
Which means
Salt solution # 1 0.1% 0.25 L should be used and for salt solution # 2 0.22% 0-75 (1 - 0.25) L
Answer:
KM = 20
Step-by-step explanation:
If V is the midpoint of KM, then ...
KV = VM
2.5z = 5z -10
0 = 2.5z -10 . . . . . . subtract 2.5z
0 = z - 4 . . . . . . . . . divide by 2.5
4 = z . . . . . . . . . . . . add 4
We know that V bisects KM, so KV is half the overall length. That is ...
KM = 2·KV = 2·2.5z = 5z
Using the value of z we found, ...
KM = 5·4 = 20
