I think it’s subtract 2x from both sides
Answer: 4y³-2
<em>I hope this helps, and Happy Holidays! :)</em>
Answer:
Step-by-step explanation:
Let X be the length of pregnancy.
X is N(268, 15)
a) Prob of pregnancy lasting 307 days or longer
= P(X>307) = 
=0.5-0.4953
=0.0047
b) Lowest 2% is 2nd percentile
Z=-2.55
X score = 268-2.55(15)
= 229.75 days
If length of days >230 days then it is not premature.
There are 2 methods you are taught in Middle School.
Elimination and Substitution.