Answer:
The scientist must use 10 ounces of Solution A and 40 ounces of Solution B.
Step-by-step explanation:
Since a scientist has two solutions, which she has labeled Solution A and Solution B, each containing salt, and she knows that Solution A is 40% salt and Solution B is 90% salt, and she wants to obtain 50 ounces of a mixture that is 80% salt, to determine how many ounces of each solution should she use the following calculation must be performed:
100 x 0.9 + 0 x 0.4 = 90
90 x 0.9 + 10 x 0.4 = 85
80 x 0.9 + 20 x 0.4 = 80
50 x 0.8 = 40
Therefore, the scientist must use 10 ounces of Solution A and 40 ounces of Solution B.
Answer:
option a
Step-by-step explanation:
y^7/8 / y^1/4
First we will accommodate the fractions
1/4 = 2/8
y^7/8 / y^2/8
Then we will subtract the exponents of the powers since they have the same base and are dividing
7/8 - 2/8 = 5/8
y^5/8
Finally we pass the 8 as radical root
8√y^5
The answer is 5
a^2+b^2=c^2
9+16=25
sq root of 25 is 5
(9 x 10 ^(-5)) - (3 x 10^(-16))
Your subtracting to find the difference in size
9 x 10^(-5)
Answer:
5x - 7= -12
5x - 7+7 = -12+ 7
5x= -5
x= -1
Step-by-step explanation:
hope this helped
