Answer:
Step-by-step explanation:
Let X be the lengths of a particular animal's pregnancies
X is N(252, 20)
(a) What proportion of pregnancies lasts more than 262 days?
(b) What proportion of pregnancies lasts between 227 and 257 days?
(c) What is the probability that a randomly selected pregnancy lasts no more than 237 days?
P(X<237) = 0.2266
(d) A "very preterm" baby is one whose gestation period is less than 202 days. Are very preterm babies unusual?
Yes very unusual since probability is very near to 0.
It is most likely positive.
Answer:
The equation is false and has no solutions.
Step-by-step explanation:
6x + 5 = 3(2x + 1)
Distributive property.
6x + 5 = 6x + 3
Cancel like terms.
5 = 3
Subtract 3 from both sides.
2 ≠ 0
The equation is false and has no solutions.
This means that these two lines never cross, and thus there is no common solution.
Answer:
<h2>y = 6x + 9</h2>
Step-by-step explanation:
The slope-intercept form of an equation of a line:
m - slope
b - y-intercept → (0, b).
Parallel lines have the same slope.
Therefore if <em>k</em>: y = 6x + 7 → m = 6, and <em>l</em>: y = mx +b,
then <em>l</em> is parallel to <em>k</em> if m = 6.
We have the equation: y = 6x + b.
The line <em>l</em> passes through (0, 9). Therefore b = 9.
Finally we have:
<em>y = 6x + 9</em>
Answer:
44.77
Step-by-step explanation:
13.1x3.70=13.1x3.7
37x131=4477
get back the decmial point 44.77
