Answer:
90 apples
Step-by-step explanation:
1st class did 1/3, 1/3 of 60 is 20, 60-20 is 40, 40 into 2.25 or 2 1/4 = 90 because 40 x 2 = 80 and 1/4 of 40 is 10, 10+80 = 90, so the second class needs 90 apples
So let the smallest integer be y.
y + y+1 + y+2 + y+3 = -26
4y + 6 = -26
4y= -32
y = -8
so the integers are -8, -7, -6, and -5
20. SR = 17
22. TR = 5 and PR= 10
23. ST=9.5
24. X=1.5
for 23, the length of QS is 19, and ST is half of that length. so you divide 19/2 and get 9.5
for 24, i found it difficult to explain but i included a picture of my work. i know it may not help but it's all i've got.