Answer:
x= -1.24, 3.24
Step-by-step explanation:
x² – 2x=4
Bring 4 over
x² – 2x - 4=0
Quadratic formula:
if ax²+bx+c=0
the (+-) = ±
= 3.24
= -1.24
Answer:
9x^4
Step-by-step explanation:
(3x)^2 * x^2
9x^2 * x^2
Add the exponents
9x^(2+2)
9x^4
Answer:
the total cost of the sneakers: $100
Step-by-step explanation:
$80 x 0.25 = $20(cost of markup)
$100 - cost of sneakers
In USA the average I.Q. is 98 while the top one average I.Q. country is Hong Kong.
But the I.Q. distribution is given by a polinomial graph, few people with extremely low I.Q. 40~70, a lot between 70~100, some between 100~120, few between 120~140 and extremely low 140+