A, C, and E.
you can check them by putting into y=mx+b form. if m is negative then as domain increases range decreases.
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.
Multiply 1.75 with 25 because you bought snacks everyday and then you’re left with 11.25
Now subtract .20 because you were left with that on day 26 and you get 11.05
Lastly you divide 11.05 with .85 to see how many snacks you bought
ANSWER IS 13 snacks
Answer:
-3/8
Step-by-step explanation:
First rewrite -2 2/3 as an improper fraction: -8/3
Now invert this result: -3/8
This is the reciprocal of -2 2/3.
Answer:
I think −
4
⁴ − 5
²
Step-by-step explanation:
I might be wrong.
