Answer:
A.
Step-by-step explanation:
1. x=-5
2. x=10
3. x=4
4. x=5
5. x=8
6.x=10
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.
Answer:
<em><u>It will cost $2.52 shipping fee to ship an item that costs $56</u></em>
Step-by-step explanation:
You can get the answer by multiplying 4.5% by $56.
Before you multiply , you need to convert the percent to a decimal which would 0.045.
C = 0.045(56) = 2.52