The right equations are a+c=30 (total number of people) and 8a+c=100 (total amount of money). So answers B and D cannot be right.
a+c=30 can be rewritten as c=30-a and filled into the second one:
8a + 30-a = 100 => 7a = 70 => a=10
That leaves answer A as the right one.
Answer:
-21 3/5
Step-by-step explanation:
May i have brainliest
Answer:
2:12 or 1:6
Step-by-step explanation:
there are 12 students. you and your friend are 2 of the 12. so it would be a 2:12 chance that you or your friend would get picked. unless if you simplify which then it would be a 1:6 chance that either of you would get picked.
This is in the form of a slope formula where y=mx+b. B pretty much gives you the vertical shift. Meaning that y=2/x-3 would be correct.
