1. Gracie is 7 years younger than Sheena. The sum of their ages is 43 years. Find their ages. Let Gracie's age be x years old

Step-by-step explanan

Gracie's age is x. If Gracie is 7 years younger than Sheena, then Sheena's age is x + 7.

b) The sum of Gracie's age and Sheena's age is 43; in other words, Gracie's age + Sheena's age = 43. Gracie is x. Sheena is x + 7. Then, x + x + 7 = 43.tion:

right

step-by-step explanation:

to find the perimeter of the rectangle this is the expression:

x-9+x-9+3x-4+3x-4=138

if we simplify it:

8x-26=138

remember, 138 is what it all adds up to

the length is 11.5cm

the width is 57.5cm

the area is 661.25cm^2

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