An= a1r^(n-1)
a7= 27(1/3)^(7-1)
= 27(1/3)^6
= (1/3)^(-3) * (1/3)^6
= (1/3)^(-3+6)
= (1/3)^3
= 1/27 #
Answers:
surface area : (41.2x2) + (4x9x6) = 298.4 cm 2
volume: 41.2 x 9 = 370.8 cm 3
Step-by-step explanation:
Answer:
x = -4
Step-by-step explanation:
5(4x+9)=-50+15
20x+45=-50+15
20x+45=-35
-45 -45
20x=-80
/20 /20
x=-4
(perimeter of a rectangle) 2w + 2l
l = 2w + 3 (length is 3 more than twice the width)P = 78 Plug in the variable values:78 = 2(2w + 3) + 2w78 = 4w + 6 + 2w78 = 6w + 670= 6w 11.6= w
