distribute
-3y -9 = 2y+3
add 3y to each side
-9 = 5y +3
subtract 3 from each side
-12 = 5y
divide by 5
-12/5 = y
y = -2 2/5
we use divsion, 10 divided by 5 is 2, everyone get 2 yumy cupcakes.
You have two numbers to work with 7 and 5.
To keep the ratios the same using different numbers they would have to increase or decrease by the same multiple.
The answers would be 5:12, 7:12 and 6:7 do not represent a ratio in the fridge.
Answer:
C = 11.75 + 0.20*x
Step-by-step explanation:
C = 11.75 + 0.20*x
Sine = opposite / hypotenuse
cosine = adjacent / hypotenuse
So, in a right triangle which has the opposite side equal to the adjacent side, we will have the sin (theta) = cosine (theta)
This would be an isosceles right triangle which is also called a 45 45 90 triangle.
sine (45) = 0.70711 and the
cosine (45) = 0.70711