Question

what is the value of 5k to the power of 2/ - 6 when k = 9?

A. 84

B. 375

C. 399

D. 2019

Answer 1

kk^(2-6)??? .@johnnyy999

Answer 2

5k^2-6 k=9

Answer 3

you have to solve this quadratic equation:
\(5k^2-6k-9=0\)

Answer 4

itss 399 since 5(9^2)-6=5*81-6=405-6

Answer 5

=399

Answer 6

yeah! @Michele_Laino

Answer 7

oops.. It is:
\(5 \cdot 9^2- 6=...\)

Answer 8

yeah dude...

Answer 9

anyone know the answer?

Answer 10

I'm sorry, I misunderstood: it is not a quadratic equation

Answer 11

399 i gave it

Answer 12

soooo... C are u shure??

Answer 13

yeah /..

Answer 14

you calculate and check

Answer 15

ok thx...

Answer 16

that's right: it is \(399\):
\(5 \cdot 81 -6= 405-6=399\)