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barxatty [35]
3 years ago
14

A mistake was made in the steps shown to simplify the expression

Mathematics
1 answer:
aleksandr82 [10.1K]3 years ago
8 0

Answer:

wheres the rest of it

Step-by-step explanation:

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Someone help me please
Salsk061 [2.6K]

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

5 0
3 years ago
NJ, TN and OH have 40 reps . NJ has 13 and OH 2 times as many as TN. write expression showing how many OH has
mixas84 [53]
NJ + TN + 2TN = 40
13 + TN + 2TN = 40
3TN = 27
TN = 9
OH = 18
8 0
3 years ago
What is the solution of the equations y=-x and y=-14X+1?
oksano4ka [1.4K]
The solution as in where do they intersect? if so, it would be 0.0769 and -0.0769
4 0
3 years ago
17. Ennis has a length of rope that measures 3 3/4 yards. He cuts all of the
UNO [17]

Answer:

3 cuts

Step-by-step explanation:

if you take 3 3/4 -3/4 =3 2 cuts would give 3 yard size strips but you need to cut the 3/4 off so there would be 3 cuts for four pieces of rope

8 0
3 years ago
Find the greatest common multiple of 12 and 8
Mama L [17]
Find the greatest common multiple of 12 and 8 is 4
5 0
3 years ago
Read 2 more answers
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