Suppose a and b represent two different school populations where a > b and a and b must be greater than 0. which of the following expressions is the largest? explain why. show all work necessary.

2(a + b)
(a + b)2
a2 + b2
a2 − b2

Write a fraction less than 1, which has a denominator of 6 and is greater than 3/4 plz answer !

Lizette is training for a marathon. at 7: 00 she left her house and ran until 8: 30, then she walked until 11: 30. she covered a total distance of 18 miles. her running speed was six miles per hour faster than her walking speed. find her running and walking speeds in miles per hour.

Ican interpret and represent the remainder in division calculations sensibly for the context (eg 27.4 in calculating average height in cm: $27.44 if it represents an amount of money) solve the following problems. 15) the wildlife park charges $25.50 dollars per person to enter their park if the park made $15096 dollars today, how many people entered the park? 16) ms adams plus 2,230 other keen runners ran a marathon: between them they ran 94817.5km. how many km did each competitor run?