Since

, you have


Since

, and

, you know that

is also positive, which means
Both x and y are 79 degrees because vertical angles are congruent.
I will draw a new chapter for the first chapter of class in chapter chapter class ti
Answer:
350 mL
Step-by-step explanation:
Let q represent the quantity (in mL) needed of the 70% solution. Then the total amount of mixture will be q+50 milliliters. The total amount of alcohol in the mixture will be ...
0.70q +0.30(50) = 0.65(50 +q)
.05q = 17.5 . . . . . . subtract (0.65q +1.50)
q = 350 . . . . . . . . . divide by 0.05
You will need 350 mL of the 70% solution.
Answer:
-2
Step-by-step explanation:
-3(-2) - 1 is equal to 5. And 2(-2) is equal to -4.