QUADRATICSSSS
The zeros of 2x2 -3x+1 are
x = 1/2 and x = 1
sin 30 is _____
1/2
Simplify √243
9√3
If P(B) = 0.5, P(AB) = 0.4, what is the probability of P(A|B)?
0.2
Solve the inequality for y:
2y - 4x < 6
The graph of x2 - 4x + 3 = -2x2-1 has a maximum or minimum
Minimum
sin 45 - cos 45 + sin 90 =_______
1
How many solutions does this system have?
3x+ 2y = 1
6x + 4y = 2
If P(A) = 1/4 and P(B) = 11/20 and P(A and B) = 11/80. Are the events independent?
Yes
What is the equation of the line in slope intercept form that passes through (-12,-3) and a slope of 1/6
y = 1/6x -1
The discriminant of 3x2 - 4x+4 = 0 is ______
(-32)1/2
What is the simplified form of
(1 - sin x) (1+sin x) ?
cos2x
How could you rewrite (4-1x2 y-3)2
?
x4/16y6
What is the probability of rolling an even number on a die?
3/6 = 1/2
The slope of the line perpendicular to the line 2x+3y = 4 is ____
3/2
The line f(x) = x-1 intersects the parabola g(x) = (x+2)2 - 9 at these two coordinates:
(-4,-5) and (1,0)
An angle lies in quadrant ______ if cos x is positive and csc x is negative
4
What is 15% of 540?
81
How many different ways can you choose 3 books from the 8 books on a shelf?
56
Factor the expression 9x3+18x2 -27x
9x(x+3)(x-1)
The vertex form of the equation x2+ 4x+3 is ______
(x+2)2 -1
cos 108 cos 33 + sin 108 sin 33
cos 75
If a pair of jeans is normally $80 and they are on sale for 25% off, how much will they be?
$60
What is the probability of randomly pulling a J, Q or K from a deck of cards?
12/52 = 3/13
Does the point (0,4) lie on the line 4x + 5y = 20?
yes