Step-by-step explanation:
Mid Point : A point which lies on the line segment and is equidistant from both the ends of the segment is called a mid point.
A line segment can have ONLY ONE mid point and it divides the line segment into two equal parts.
Now, Given : C is the midpoint of AB.
and B is the midpoint of CD.
⇒ AC = BC and BC = BD
Now by Euclid's Lemma
- "Things which are equal to the same thing are equal to each other."
Here, AC = BC , and BC = BD
⇒ AC = BD
Hence the result.
First, find the z-score:
z = (value - mean) / sdev
= (275 - 280) / 15
= - 0.33
In order to use a standard normal table, we need a positive z-score:
P(z < -0.33) = 1 - P(z < 0.33)
Looking at the table, we find P(z < 0.33) = 0.6293
Therefore:
P(z < -0.33) = 1 - 0.6293 = 0.3707
Hence, you have a probability of about 37% <span>that a randomly selected pregnancy lasts less than 275 days.</span>
Answer:
I'm not really sure but I think it's 2
Step-by-step explanation:
So here's what I did;
x³+3x-9=x - 1 +2x
x³+3x - x -2x = 9 - 1
x³= 8
x = ³√8
x = 2
I hope this helps
Answer:
63
Step-by-step explanation:
use tangent formula
