Answer:
assuming each square equals 1 the answer would be 29
Answer: number 5 square number six triangle number seven heptagon number eight hexagon not regular all others are regular
Step-by-step explanation: it will take to long to answer all pages all I can do for now
(2a + 3b)^2 = 4a^2 + 12ab + 9b^2 =
((4a^2 - 6ab + 9b^2) + 18ab) = 144
4a^2 - 6ab + 9b^2 = 144 - 18 ab
8a^3 + 27b^3 = (2a + 3b)(4a^2 - 6ab + 9b^2)
8a^3 + 27b^3 = (2a + 3b)*(144 - 18ab)
8a^3 + 27b^3 = 12 * (144 - 18ab)
= 12 * ( 144 - 18*6) since ab = 6
= 12 * (144 - 108)
= 12 * (36)
= 432 <<<<==== answer
Answer:
11 plates
Step-by-step explanation:
$60-$12.5 = $47.50
$47.50-$20 =$27.50
$27.50 divided by $2.50 = 11 plates
Answer:
and below
Step-by-step explanation:
33a+21c = 228
a+b = 8
solving the equation b= 3 a =5