Let the unknown side be "z" inches
Through pythagoras:
Because the square of the two sides add up to the square of the hypotenuse in a right triangle.
This means that
So the missing side is 16 inches
Hope this helped
Cards = x
Bouquets = y
They spend 2 on each card so 2x and 3.50 for each bouquet so 3.50y add those together to get the total they can spend 2x + 3.50y = 360
Then add the sales together: 6x + 8y = 900
Answer: D. 2x + 3.50y = 360; 6x + 8y = 900
Step-by-step explanation: