Applying the law of cosine, b² = a² + c² - 2ac(cos B), the length of AC of the marsh, to one decimal place, is: 522.1 meters
<h3>What is the Law of Cosine?</h3>
The Law of Cosine is given as, b² = a² + c² - 2ac(cos B).
From the diagram given, we have the following:
- B = 180 - 75 = 105°
- b = AC (length of the marsh)
- a = 220 m
- c = 420 m
Plug in the values into the law of cosine formula:
b² = 220² + 420² - 2(220)(420)(cos 105)
b² = 272,629.8
b = √272,629.8
b = 522.1 meters. (Length of AC of the marsh)
Learn more about the law of cosine on:
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Answer:
243
Step-by-step explanation:
Area=Base x Height.
18 x 13.5=243 :)
D! Because 2x4=8 and you would have to do that twice and then 1/2x4x6=12 and you would do that twice and 6x2=12
Answer:
= $ 4344.05
Step-by-step explanation:
Using the formula
A = P (1 +r/n)^nt
Where A is the amount accumulated, P is the principal amount, n is the number of interest periods, t is the time taken in years.
A = $4369.20
r = 0.033
n = 4
t = 21/12
Therefore;
$4369.20 = P ( 1 + 0.033/4)^ (21/12×4)
$4369.20 = P (1.000825)^7
$4369.20 = 1.005789 P
P = $4369.20/1.005789
<u> = $ 4344.05</u>
Answer:
let b union b be
B={2,4,6,8} and B= {1,2,3,4,5}
then B union B = {1,2,3,4,5,6,8}
Step-by-step explanation:
<em>Venn diagram of b union b is in the attachment </em>
<em>Hope </em><em>it </em><em>is </em><em>helpful</em><em> to</em><em> you</em>
