Equations of Circles
What is the radius of the following circle:
(x-2)2 + (y-7)2 = 16
Radius: 4
Name the three trig ratios we discussed in class.
Sin, Cos, Tan
What is the top part of a fraction called?
The numerator!
If x = 2, what is:
x2+4?
8
You roll a die once, what is the probability that you roll a 3?
1/6
What is the radius of the following circle:
(x)2 + (y)2 = 36
Radius: 6
If you needed to solve for the hypotenuse of the triangle, and have the adjacent side, which trig ratio would you use?
When is PI Day Celebrated?
March 14th (3/14)
Solve the following for x:
x/7 = 6
42
You roll a die once. What is the probability that you roll an even number OR rull a 5?
4/6 or 2/3
What is the center of the following circle:
(x+5)2 + (y-3)2 = 64
Center: (-5, 3)
Solve the following for x:
cos(16o) = x/2
x = 1.923
What is the pythagorean theorem?
a2+b2=c2
4x3*3xy2*2xy2 can be reduced to what? (Simplify this!)
24x5y4
If you flip a coin 4 times, what are the odds that you flip 4 heads in a row?
1/16
What is the radius and center of the following circle:
(x-3)2 + (y-5)2 = 49
Center: (3,5)
Radius: 7
tan(53o) = x/19
x = 25.21
How many seconds are in a day?
60*60*24 = 86400 seconds
What value of x will satisfy the equation:
5(x -13) = -55
x = 2
You roll a die 5 times and roll 2 each time. Whats the probability of rolling a 2 on the 6th row?
1/6
What is the radius and center of the following circle:
(x-1)2 + (y+2)2 + 5 = 30
Center: (1, -2)
Radius: 5
Solve the following for x:
sin(63o) = 10/x
x = 11.22
What is the billionth digit of pi?
9
If f(x) = 2x2+3, then what is f(3) = ?
2(3)2+ 3
f(3) = 21
You roll a die once and flip a coin once. What is the probability that you roll a 2 OR a 5, AND get a tails on the flip?
2/6 * 1/2
1/6