Answer: x < 
<u>Step-by-step explanation:</u>


2(6)x - 10(12) < 10(2) - 5(3)x
12x - 120 < 20 - 15x
<u> +15x </u> <u> +15x </u>
27x - 120 < 20
<u> +120 </u> <u>+120</u>
27x < 140

x < 
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: $3.60
Step-by-step explanation:
Answer:
B
Step-by-step explanation:
14p and 3p have the same variable