Answer:
Step-by-step explanation:
Let the number of ounces of
A = x
B = y
A scientist has two solutions, which she has labeled Solution A and Solution Each contains salt. She knows that Solution A is 40% salt and Solution B is 55% salt. She wants to obtain 90 ounces of a mixture that is 45% salt. How many ounces of each solution should she use?
Our system of equations is given as
x + y = 90.... Equation 1
x = 90 - y
40% × x + 55% × y = 45% × 90 ounces
0.4x + 0.55y = 40.5....Equation 2
We substitute 90 - y for x in Equation 2
The answer is 92 inches. because 1 foot = 12 inches, 7 feet x 12 = 84 inches. add the 8 remaining inches, and you get 84 + 8 = 92
Well, create an equation.
y=6x+4 and y=5x+8
From there you would go to Desmos.com and find out. The answer is 4,28.
This means it's the fourth term and the number is 28.
