Joseph has saved $325. He wants to purchase a surfboard that costs $785. If he saves $12 each week from the money he earns mowing yards and another $6 each week from his allowance, how many weeks will it take Joseph to save enough to buy the surfboard?

25.6 weeks

Step-by-step explanation:

He has saved $325 already so the amount left to purchase the surfboard is:

= 785 - 325

= $460

He saves $12 and $6 every week.

= $18.

Number of weeks left:

= 460/18

= 25.6 weeks

step-by-step explanation: h: (- 3, 6)

m: (1, - 2)

o: (7, 6)

r: (- 9, - 2)

midpoint of hm: (- 1, 2)

midpoint of or: (- 1, 2)

therefore, b is the midpoint of both diagonals bisect each other !

to prove the diagonals are perpendicular, show that the product of the slopes = - 1