X=-1 if you ever need help with any other math problems another site to use is called Free-Online-Calculator-Use.com
Let

be the number of strawberry cupcakes, and

the number of chocolate cupcakes.
From our problem we know that the total number of cupcakes is 180, so

. We also know that the number of chocolate cupcakes is eighteen more than twice the number of strawberry cupcakes, so

, or solving for

:

.
Know we have our system of equations:

We can conclude that the correct answer is <span>
B. c + s = 180 c = 2s + 18.
Lets solve our equations to find how many cupcakes of each they have:
from our second equation we know that </span>

; lets replace that value in our first equation to find the number of strawberry cupcakes:




<span>Now that we know the number of strawberry cupcakes, lets replace that value in our second equation to find the number of chocolate cupcakes:
</span>



As a bonus, we can conclude that the <span>math club have 126 chocolate cupcakes and 54 strawberry cupcakes. </span>
Answer:
A direct variation is when x and y (or f(x) and x) are directly proportional to each other... For example, if you have a chart that says x and y, and in the x column is 1, 2 and 3, and the y column says 2, 4 and 6... then you know it's proportional because for each x, y increases by 2
Step-by-step explanation:
Answer:
- Abel is 7 and Asare is 17 years old
Step-by-step explanation:
Let the age of Abel is x and age of Asare is y.
Three times the age of Abel is four more than the age of Asare:
And
In three years, the sum of their ages will be 30 years:
We got two equations.
Simplify and solve by substitution:
- 3x - 4 + x = 24 Substitute y
- 4x - 4 = 24
- 4x = 28
- x = 7
Find y:
Answer:
they would need 9 cabins 8 of them being completely full the 9th cabin would not be
Step-by-step explanation:
188 / 22 = 8.55