Important notes:
3 sides 1 angle - COSINE RULE
2 sides 2 angle - SINE RULE
since, the question wants to find the length of BC. In the end we will have 3 sides and 1 angle and use cosine rule
formula of cosine rule:
a² = b² + c² - 2bc Cos A° (to find the length)
Cos A° = b² + c² - a² / 2bc ( to find the angle, if there is given three sides and have to find the angle)
So just substitute,
a² = 13² + 15² - 2(13)(15) Cos 95°
a = 20.6 or 21
Answer:
<em>Functions:</em>
3. The chart with arrows
4. The graph
<em>Not Functions:</em>
1. (1,1), (2,2), (3,3), (1,4)
2. (1,17), (0,16), (0,15), (-2,17)
Step-by-step explanation:
Functions do not have repeating domains (x-coordinates).
Hope it helps!
Hey there!
When two lines intersect, the pairs of angles that are directly across from each other (ex. the pair depicted in the image) are called opposite angles. These angles always measure the same.
This means that we can set the two expressions equal to each other and solve for x:
2x + 2 = 3x - 52
x = 54
Hope this helps!
Answer:
<em>2(x) + 2(x + 3) = 90 </em>
Step-by-step explanation:
Width: x inch.
Length: (x + 3) inch.
P = 2 
+ 2 
P = <em>2(x) + 2(x + 3) = 90</em>
The answer to the equation you posted The equation 4s = 33.4 models a constant rate situation. what is <span>the value of 2s is:
to make the given equation 4s = 33.4 to 2s, divide the whole equation by 2
1/2 ( 4s = 33.4)
4s/2 = 33.4/2
2s = 16.7
i hope that i answered your question. feel free to ask further questions</span>
