MATH MA3 GET FULL MARKS OMG!! Flashcards
(32 cards)
1
Q
define direct proportionality
A
Two quantities are said to be in direct proportion if they increase or decrease in the same ratio.
2
Q
formula for hypotenuse side x
A
a^2 + b^2 = c^2
3
Q
formula for hypotenuse leg a
A
a=square root c2﹣b2
4
Q
litre to cm^3
A
1 litre = 1000 cm^3
5
Q
formula for distance
A
speed*time
6
Q
formula for speed
A
speed = distance ÷ time
7
Q
mode formula
A
how many times a number appears in a set
8
Q
mean formula
A
m = sum of terms / no. of terms
9
Q
range formula
A
largest number - smallest
10
Q
median formula
A
when in order and odd, the number in the middle of the list. when even, a+b/2
11
Q
2*2
A
4
12
Q
3*3
A
9
13
Q
4*4
A
16
14
Q
5*5
A
25
15
Q
6*6
A
36
16
Q
7*7
A
49
17
Q
8*8
A
64
18
Q
9*9
A
81
19
Q
10*10
A
100
20
Q
11*11
A
121
21
Q
12*12
A
144
22
Q
13*13
A
169
23
Q
14*14
A
196
24
Q
15*15
A
225
25
16*16
256
26
17*17
289
27
18*18
324
28
19*19
361
29
20*20
400
30
formula for percent of a number
when n=%, and x is the number, n/100*x
31
formula direct proportionality
The equation of direct proportionality is y = kx, where x and y are the given quantities and k is any constant value.
32
formula indirect proportionality
