We can use these variables:
A = number of ounces for solution A
B = Number of ounces for solution B
A + B = 20
Now, we can use decimal conversions.
0.65A + 0.80B = 0.70(120)
Next step: We substitute A into 120 - B to show their relationship.
0.65(120 - B) + 0.80B = 84
Now onto the next equation:
78 - 0.65B + 0.80B = 84
0.80 - 0.65 = 0.15, so…
0.15B = 84 - 78
0.15B = 6
B = 6 divided by 0.15
B = 40 ounces
To find A, we can simply plug B into the starting equation.
A = 120 - 40
A = 60 ounces
Your final answer: The scientist should use 60 ounces of solution A and she should use 40 ounces of solution B. Yeah
Answer:
( -2 , 3 )
Step-by-step explanation:
When reflecting across the y-axis, you change the coordinates by ( -x , y )
( 2 , 3 ) --- ( -x , y ) --- ( -2, 3 )
Answer: Hello, The answer to this question is 57 + 52 + 40 +42+37+54+47 equals 329
Step-by-step explanation: Hope this helps you :)
