Commutative Property of Addition <span />
Answer: 
Step-by-step explanation:
The pool of rats from which the researcher is drawing participants is composed of the following:
23 male albino rats
21 male spotted rats
35 female albino rats
11 female spotted rats
Total rats = 23+21+35+11 =90
After drawing first rat , total rats remained = 89

The probability of choosing a male albino rat and then either a female albino rat or a male spotted rat = 
11 more liters because then the ratio would be 2:14 which is equal to 1:7
Answer:
7 toys
Step-by-step explanation:
3+4=7
Answer:
slope (m)= 1/2
y-intercept: (0, -1)
equation: y=
x-1
Step-by-step explanation:
slope is
=
y-intercept is where the line crosses the vertical axis (y-axis) so its (0, -1)
using point slope form:
y-y1=m(x-x1)
y-(-1)=1/2(x-0)
y+1=1/2x
y=
x-1