So.. if we take the numerator to be say "a", then the denominator will be "a+3"
either of those two fractions will do
-201+189=-12-201=-213+189=-24 . S the sign would be negative(-).
Assuming a normal distribution we find the standardized z scores for a:-
z1 = (80 - 180) / 25 = = -100/25 = -4
z2 = (280-180) / 25 = 4
Required P( -4 < z < 4) from the tables is >99.9%
b
z1 = 130-180 / 25 = -2
z2 = 230-180 / 25 = 2
from tables probability is 2* 0.4773 = 95.46 %
The answer is false . If u need to write down "why" just Comment and I'll help .
Answer:
2r - 36
Step-by-step explanation:
r x r = 2r
-9 x 4 = -36
