Answer:
3:8
Step-by-step explanation:
Both should be in hours. So, 2 days = 2*24 = 48 hours
18 hours : 2 days = 18 hours : 48 hours = 18 : 48
= 18/48 = 3/8 {giving by 6th tables}
= 3:8
Answer:
Change in sulfur oxide in the air =
Step-by-step explanation:
Data provided in the question:
Relation between the amount of sulfur oxide in the air and the population as:
S² = 110P² + 20P + 600
Population growth rate, = 10 people per month
Now,
change in sulfur oxide with time i.e
differentiating the given relation with respect to time 't'
we have
= + 20
at P = 100 and = 10 people per month
we have
= 2 × 110 × 100 × 10 + 20
or
= 220020
or
=
or
Change in sulfur oxide in the air =
Firstly, solve for the value of angle C by using the concept that the sum of the three angles of a triangle should be 180 degrees.
C = 180 - (A + B) = 180 - (39 + 28) = 113 degrees
After which, use the concept of sine law which state that the ratio of sine of the angle to the side opposite to it should be equal,
(sin A / a) = (sin C / c) ; (sin 39 / 16) = (sin 113 / c)
Solving for c gives an answer of c = 23.40.
Since the standard deviation for the population is known, the z-distribution is used.
<h3>When to use the t-distribution and the z-distribution?</h3>
- If the population standard deviation is known, the z-distribution is used.
- If the population standard deviation is not known, only the sample standard deviation, the t-distribution is used.
In this problem, the <u>standard deviation for the population is known</u>, hence the z-distribution is used.
More can be learned about which distribution to use, the t-distribution or the z-distribution, at brainly.com/question/15869521
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Answer:
..
Step-by-step explanation:
a =
⇒ 670
b =
⇒ 301600
c =
⇒ 560