Step-by-step explanation:
17+7x=x+5
6x=-12
x=-2
Hope it helps you
My teacher taught me a simple equation for these types of problems:
(percent of solution × amount of solution) + (percent of solution × amount of solution) = (percent of solution × total amount of solution)
in simple terms: %amount + %amount = %total amount
We know don't know how much gallons of 60% solution we need so it will be represented as x. We dont know the total amount either so it would have to be both solutions added together so 50 + x. Now lets solve:
(0.60)(x) + (0.24)(50) = (0.50)(50 + x) simplify/ distribute
0.6x + 12 = 25 +0.5x get all xs on one side and numbers on other
0.1x + 12 = 25
0.1x = 13 divide both sides by 0.1 to find x
x = 130
You need 130 gallons of 60% solution.
Answer
The total probability is one:
Total probability of being greater than 25 is 1 because the totals of all values less than 25 is 1.
Answer:
c is the answer for number 6 and
Step-by-step explanation:
and b is the answer for number 7
Answer:
If the question is How many T-Shirts does the school have, it will be 57 T-Shirts
Step-by-step explanation:
684 divided by 12 is 57
