Misc.
Find the mean, median and mode of the data set {7,8,5,1,18,8,9,14,3}
Mean: 8.11
Median: 8
Mode: 8
Solve 4x2-28x+54 with the quadratic formula
(7/2)+(([square root]5)/2)i, (7/2)-(([square root]5)/2)i
Factor 16x3+64x2+18x
2x(8x2+32x+9)
Solve i4
1
Write the equation of a circle with a radius of 3 and a center of (-4,8)
(x+4)2+(y-8)2=9
Find the roots of 3x2-15x+64 with the quadratic formula
(5/2)+(([square root]543)/6)i, (5/2)-(([square root]543)/6)i,
Factor x2-10x+25
(x-5)2
What are the solutions to x2=-144
12i and -12i
Divide 6x2+7x-20 by 2x+5 using synthetic division
3x-4
Write a quadratic equation with roots 8 and -4
x2-4x-32
Factor x2-15x+50
(x-10)(x-5)
Solve (10i-18)+(-7i+9)
(3i-9)
The half life of X element is 10.5 minutes. If you started with 20g of X element, about how much will be left after 32 minutes to the nearest 10th?
12.6 grams
Simplify 4x2-28x+76 with the quadratic formula
(7/2)+((3[square root]3)/2)i, (7/2)-((3[square root]3)/2)i
Factor 3x3-76x2+99x
x(3x2-76x+99)
Solve (7x+18)2+20=0
-(18/7)+((2[square root]5)/7)i, -(18/7)-((2[square root]5)/7)i
Jimothy has $6,000 that he got after his father died. He puts it into his savings account which has an interest of 6.8% compounded quarterly. About how many years will it take for this to grow to $18,000?
6 years
find the roots of 4x2+19x-12 using the quadratic formula
(-19+[square root]553)/8 or (-19-[square root]553)/8
Find the zeros of 3x3-6x2-45x
x=0, x=5, x=-3
Write an equation whose roots are 5+2i and 5-2i
x2-10x+29=0