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 = 
(7*X)-2=3 There's a nice equation
Answer:
200
Step-by-step explanation:
100+
100
-----
200
Answer:
me
Step-by-step explanation:
<u>Answer
</u>
The concept can be used to prove that the diagonals of a parallelogram bisect each other is congruent triangles
<u>Explanation
</u>
In a parallelogram, opposite sides are equal and parallel.
The two diagonals in the parallelogram make four triangles. opposite triangles are congruent. That means two pair of congruent triangle are here.
Using congruence of triangles, we can prove the diagonals of a parallelogram bisect each other