Answer:
median: 60
mean:44
Step-by-step explanation:
80-20=60
30+50+80+40+20=220
220÷5=44
area = 117
The area (A) of a trapezoid is calculated using the formula
A = h (b₁ + b₂ )
here h = 6, b₁ = 14 and b₂ = 25
A = × 6 × (14 + 25) = 3 × 39 = 117
12 ants, 8 spiders.
15
The factors of 30 are: 1, 2, 3, 5, 6, 10, 15, 30
The factors of 45 are: 1, 3, 5, 9, 15, 45
The factors of 90 are: 1, 2, 3, 5, 6, 9, 10, 15, 18, 30, 45, 90
Then the greatest common factor is 15.