Is it too late to answer? I think I can help.
<span>It will take 7 and 1/2 hrs to build 10 doghouses
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A. They are parallel because when you solve for y they have the same slope
The answer is 231 miles because 1906-1503 is 403 Then 403+2196-1906 is equal to 693 and then you were divided by 3 to find the mean
Answer:
2√5
cos x = -------------
5
Step-by-step explanation:
If tan x = 1/2 then what is cos x?
Recall that tan x is defined as the quotient sin x / cos x, so that in this case sin x / cos x = 1 / 2 = opp side / adjacent side. Also, recall that cos x = adj side / hypotenuse.
To determine cos x, we need to find the length of the hypotenuse. That, in turn, through use of the Pythagorean Theorem, is √(1^2+2^2), or √5.
Then cos x = adj side / hyp = 2/√5. Rationalizing the denominator, we get
2√5
cos x = -------------
5