Stuck 30 points
10. a a square and a rectangle have equal areas. the rectangle is 64 cm by 81 cm. what is the perimeter of the square?
a. 72 cm
b. 144 cm
c. 288 cm
d. 5,184 cm

288 cm.

Step-by-step explanation:

Area of the  rectangle =  64 * 81 = 5184 cm^2  which is also the area of the square.

The side of the square = √5184 = 72 cm.

So the perimeter of the square  = 72 * 4

= 288 cm.

The answer is c.288 since 64*81=5184 and the square root of 5184 is 72 and 72*4=288

W represents the number of watermelons bought 
P represents the number pineapples bought 

The expression shows the total cost of both of fruits bought. If $4.49 is the cost for one watermelon, and $5 is the cost of one pineapple, the equation to find the cost becomes 

Let y be the total cost;

y=$4.49w+$5p

Hope I helped :)