Math Flashcards
(13 cards)
1
Q
Slope of a line?
A
(y2-y1)/(x2-x1)
2
Q
Range?
A
larger number minus smaller number: 92-61=41
3
Q
Median
A
Arrange in ascending order and find the middle, or divide the two middle numbers for two:
43,53,63,73 = 53+63/2 = 58
4
Q
Mean
A
Add all the numbers and divide by their quantity:
2+4+4+5+5/5=20/5= 4
5
Q
Mode
A
The number that appears most is the mode:
5+5+7+7+7+7=7
6
Q
Legth or an arc
A
n°/360°x2πr
7
Q
The formula for a circle with a center at (h,k) and a radius of r is?
A
(x-h)²+(y-k)²=r²
8
Q
One solution?
A
Consistent/Independent
X=4, Y=3
9
Q
Many Solutions?
A
Consistent/ Dependent
0=0, 5=5, X=X
10
Q
None Solutions
A
Inconsistent/Independet
2=5, 3=8
11
Q
Hypotenuse?
A
A²+B²=C²
C²+C²=H²
12
Q
Bhaskara
A
∆=b²-4.a.c
X=-b±√∆/2a
13
Q
Are of a sector
A
A=[0°/360°]πr²
