Answer:
<h2>The angle ACB is 9 degrees.</h2>
Step-by-step explanation:
To solve this problem we just need to observe the point B, which has two angles and both of them are on a straight angle, this means that the sum of angle ABC and CBD is 180, that is
We know that , then
Now, in the triangle ABC, we know that all three angles must sum 180
Therefore, the angle ACB is 9 degrees.
Answer: 2.460
Step-by-step explanation:
The formula of Margin of Error for (n<30):-
Given : Sample size : n= 18
Level of confidence = 0.90
Significance level :
Using the t-distribution table ,
Critical value :
Standard deviation:
Then, we have
Hence, the margin of error (ME) of the confidence interval with a 90% confidence level = 2.460
Answer:
Step-by-step explanation:
The 10 on the 8 on the top is you have to count how many tens are they, For example like: 10 x 10 x 10, That's 3 and it's equal too 1000.
Answer:
<em>2 solutions</em>
Step-by-step explanation:
Given the expression
2m/2m+3 - 2m/2m-3 = 1
Find the LCM of the expression at the left hand side:
2m(2m-3)-2m(2m+3)/(2m+3)(2m-3) = 1
open the bracket
4m²-6m-4m²-6m/(4m²-9) = 1
Cross multiply
4m²-6m-4m²-6m = 4m² - 9
-12m = 4m² - 9
4m² - 9+12m = 0
4m² +12m-9 = 0
<em>Since the resulting equation is a quadratic equation, it will have 2 solutions since the degree of the equation is 2</em>