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Dmitry_Shevchenko [17]
3 years ago
13

If in triangle ABC, a=5, b=6 and c=8, then cos A is...

Mathematics
1 answer:
s2008m [1.1K]3 years ago
5 0

In a triangle, the nomenclature is that a variable side a is opposite of the angle A. we can use the cosine law to determine the value of cosine A. 
a2 = b2 + c2 -2bc cos a25 = 36 + 64 - 2*6*8 * cos acos a = 25/32 
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Norfolk va has a population of 242,628 people. Baltimore, Md has 376,865 more people than Norfolk. Charleston,SC has 496,804 les
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What is 15% of 60 show using a model
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What is the equation in slope-intercept form of the line that passes through the points(-4,2) and (12,6) .​
Stels [109]

Answer:

y=0.5x

Step-by-step explanation: Plot the points then draw the line to then use the slope formula y=mx+b m is slope which is 1/2 which is 0.5, you can use either, and b is the y-intercept which is (0,0)

3 0
3 years ago
Jack's Lumber Yard receives 8,000 large trees each period that it subsequently processes into rough logs by stripping off the tr
nasty-shy [4]

Answer:

1. $3,960,000

2. $3,840,000

3. Sell the logs.

Step-by-step explanation:

The questions are incomplete:

<em>1. What is the contribution to income from selling the logs for log cabin construction?</em>

<em>2. What is the contribution to income from processing the logs into lumber?</em>

<em>3. Should Jack’s continue to sell the logs or process them further into lumber?</em>

1. The contribution income is the total income generated by the sales of the rough logs. Each one contributes with $495.

Contribution to income (log cabin construction) = $495*8,000 = $3,960,000

2. In this case, we have to calculate what is the profit after processing each board, then multypling by the amount of boards per log and lastly multiplying by the total amoun of logs.

Contribution to income (processed board) = $(0.75-0.15)*800*8000

Contribution to income (processed board) = $0.6*800*8000

Contribution to income (processed board) =  $480*8000 = $3,840,000

3. Jack should continue to sell logs for cabin construction because the profit per log is higher than for the processed board ($495/log versus $480/log).

4 0
3 years ago
Show all work please!
tino4ka555 [31]
Length of DA: 90°
They are placed on a obtuse angle, which is 180° and DA are also placed on a right angle, so that means 180°-90°=90°

Length of AB: 180°
Their placed on a obtuse angle, therefore it will just be 180°

ADF=BDE because, both of them are right angles. This means their degrees will equal (90°=90°).

Hopefully this helps, sorry if I turn out to be wrong!
3 0
3 years ago
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