In math, "over" and "/" and "÷" mean the same thing. The expression you have written is
... 7/12/5/9 = 7/540
It seems possible you may want the ratio of two fractions to be simplified. Perhaps you intend ...
... (7/12)/(5/9) = (7/12)×(9/5) = (7×9)/(12×5) = 63/60
... = 21/20 = 1 1/20
_____
Dividing by anything is the same as multiplying by its reciprocal. This is a convenient fact when dividing by a fraction.
Answer:
8190 ways
Step-by-step explanation:
Given
Selection
Required
Number of ways of selection
4 students can be selected from 15 students in:
Similarly.
5 teachers can be selected from 6 teachers in:
So, the required number of selection is:
Apply combination formula:
Answer:
Y =-4X +12
Y =-0.625X -0.75
Step-by-step explanation:
(3,0) and (2,4)....
x1 y1 x2 y2
3 0 2 4
(Y2-Y1) (4)-(0)= 4 ΔY 4
(X2-X1) (2)-(3)= -1 ΔX -1
slope= -4
B= 12
Y =-4X +12
~~~~~~~~~~~~~~~~~
(-6,3) and (2,-2)
x1 y1 x2 y2
-6 3 2 -2
(Y2-Y1) (-2)-(3)= -5 ΔY -5
(X2-X1) (2)-(-6)= 8 ΔX 8
slope= - 5/8
B= - 3/4
Y =-0.625X -0.75
You have 2+2 in each 2 there are 1's so
2=(1+1) 2=(1+1) =4
4=1+1+1+1
2+2=4
think of 2's as 1's when adding did you know 2x2= 4 as well.
