Use the quadratic formula with a = 2, b = -5, and c = 1
x = -b ± sq rt b2 - 4ac
-------------------- <---------- Please note: sq rt is over entire expression of b^2 - 4ac
2a
x = - (-5) ± sq rt (-5)2 + 4(2)(1)
-------------------------------- <---------Please note: sq rt is over entire expression (-5)2 + 4(2)(1)
2(2)
x = 5 ± √17
---------
4
x = 5 + 1√17 OR x = 5 + -1√17
--- --- --- ----
4 4 4 4
Answer: x = 5 + 1√17 OR x = 5 + -1√17
--- -- -- --
4 4 4 4
Answer:
$8.75 left
Step-by-step explanation:
30 - 5^2 x
= 30 - 25 x
if x = 0.85 then
30 - 25 (0.85)
= 30 - 21.25
= 8.75
She has $8.75 left
Answer:
No.
Step-by-step explanation:
410•10=4100 and 4100=41•100. We just need to focus on the 100. 100•100•100•100=100,000,000 which has 8 zeros, not 4 zeros.
There are 13 spades and total number of cards is 52.
so the odds are 13:(52-13) = 13:39.
F
