9 In a sequence of numbers, a2 = 26, az = 33, A4 = 40, as = 47, a6 = 54,
Based on this information, which
equation can be used to find the
nth term in the sequence?
A
in + 12
B
26 + 2n
с
-7n + 12
D 2n + 24

3x^3-x^2+6x-9

no not all of them.

step-by-step explanation:

some of them have a square base.

hey! so 1 (25) out of 4 (100) is 25 so your answer is 25%. it's like quarters!

(b) 240

step-by-step explanation:

first, we use the pythagorean formula using the given side lengths to find x. then we use x to find the side lengths. then we add the side lengths to find the perimeter.

pythagorean theorem formula:

a^2 + b^2 = c^2

(x - 20)^2 + (x - 40)^2 = x^2

x^2 - 40x + 400 + x^2 - 80x + 1600 = x^2

x^2 -120x + 2000 = 0

(x - 100)(x - 20) = 0

x - 100 = 0 or x - 20 = 0

x = 100 or x = 20

we see that the solution x = 20 must be discarded because it will give a negative side length and a side length of 0. the only valid solution is x = 100.

perimeter = sum of the lengths of the sides

perimeter = x + x - 20 + x - 40

perimeter = 3x - 60

replace x with 100.

perimeter = 3(100) - 60

perimeter = 300 - 60

perimeter = 240