If Nicole can type 21 words in 7 minutes then the answer would be how much per minute. What you have to do in this is to make the 7 to one, which is easy, 7 divided by 7 equals one. Then do that to the 21, 21 divided by 7 equals 3. So the answer would be she can type three words per minute.
Answer:
- 24 ounces of solution B
- 16 ounces of solution A
Step-by-step explanation:
The largest contributor of salt to the mix is the 45% solution (B), so we'll let our variable (b) represent the quantity of that. The total amount desired is 40 ounces, so the quantity of solution A is (40-b) ounces. Then the amount of salt in the mix is ...
0.45b +0.20(40-b) = 0.35(40)
Simplifying and subtracting 0.20(40), we get ...
0.25b = 0.15(40)
b = 40(.15/.25) = 24
(40-b) = 16
The scientist should use 24 ounces of Solution B and 16 ounces of Solution A.
In scientific notation, the answer is 3.5*10^-6 .
I hope that this helps
Answer:7picm Circumference = pi x d Diameter = 7 C = pi x 7 C = 7pi cm.
Step-by-step explanation:
