X - 2y = 5 -3x + 3y = 7 solve the following system of equations

   (⁻ ²⁹/₃ , ⁻ ²²/₃ )

Step-by-step explanation:

let x - 2y = 5  be [a]   &   -3x + 3y = 7 be [b]

First, lets make x the subject of [a] and then substitute [a*] into [b] and solve for y

           x - 2y = 5   [a]

          x = 5 + 2y    [a*]

          -3 (5 + 2y) + 3y = 7

            - 15 - 6y + 3y = 7

                           -3y = 22

                               y =  - ²²/₃

Now, since y =  - ²²/₃, we can substitute for y in [a*]

      ⇒   x = 5 + 2(- ²²/₃)

            x = 5 + ⁻⁴⁴/₃

            x = ⁻ ²⁹/₃

∴ the solution for the system of equations is x = ⁻ ²⁹/₃ , y = - ²²/₃  OR  (⁻ ²⁹/₃ , ⁻ ²²/₃ )

step-by-step explanation:

1. the cylinder is a. 54

2.   a.108 /

part a

in a city ice cream is mostly only bought when the temperature is very high as ice cream cools down our

so we can derive the conclusion that as the temperature increases the number of ice creams sold also increases

part b

y intercept is 5

slope is 2

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