Answer: 21
Step-by-step explanation:
ahaha but for real it is 19
the step by step explanation is to expand the binomial
Answer:
D and C
Step-by-step explanation:
any line that is convergent, no divergent lines, and intersecting lines.
Answer:
15 B
16 C
17 A
Step-by-step explanation:
The first solution contributes 0.78*1 = 0.78 L of acid.
The second contributes 0.64*6 = 3.84 L of acid.
There will be 7 L total of the new solution, and 3.84 + 0.78 = 4.62 total L of acid in it. So the new solution has a concentration of 4.62/7 = 0.66, or about 66%.
