addition of signed numbers: -3+2
answer = -1
Answer:
Step-by-step explanation:
Before we can determine the exact trigonometric ratios for the angle x whose radian measure is given as
, we need to first determine the quadrant the angle falls into.
The angle
=
and it falls in the second quadrant. since the angle is positive, we will use the trigonometry ratio that is positive in the second quadrant. The trigonometry ratio that is positive in the second quadrant is sin(x) while others are negative.
![sin \frac{3\pi}{4} = sin (\pi - \frac{\pi}{4} ) = sin\frac{\pi}{4} = \frac{1}{\sqrt{2} } \\cos \frac{3\pi}{4} =cos (\pi - \frac{\pi}{4} ) = -cos\frac{\pi}{4} = -\frac{1}{\sqrt{2} } \\tan \frac{3\pi}{4} = tan (\pi - \frac{\pi}{4} ) = -tan\frac{\pi}{4} = -1](https://tex.z-dn.net/?f=sin%20%5Cfrac%7B3%5Cpi%7D%7B4%7D%20%20%3D%20sin%20%28%5Cpi%20-%20%5Cfrac%7B%5Cpi%7D%7B4%7D%20%20%29%20%3D%20sin%5Cfrac%7B%5Cpi%7D%7B4%7D%20%3D%20%5Cfrac%7B1%7D%7B%5Csqrt%7B2%7D%20%7D%20%5C%5Ccos%20%5Cfrac%7B3%5Cpi%7D%7B4%7D%20%3Dcos%20%28%5Cpi%20-%20%5Cfrac%7B%5Cpi%7D%7B4%7D%20%20%29%20%3D%20-cos%5Cfrac%7B%5Cpi%7D%7B4%7D%20%3D%20-%5Cfrac%7B1%7D%7B%5Csqrt%7B2%7D%20%7D%20%5C%5Ctan%20%5Cfrac%7B3%5Cpi%7D%7B4%7D%20%3D%20tan%20%28%5Cpi%20-%20%5Cfrac%7B%5Cpi%7D%7B4%7D%20%20%29%20%3D%20-tan%5Cfrac%7B%5Cpi%7D%7B4%7D%20%3D%20-1)
Its 10. Parenthesis mean to multiply.
Answer:each class would buy 35 rolls.
Step-by-step explanation:
Let x represent the number of rows of either floral sheeting or vinyl glasses that each class would buy.
The freshmen have already spent $307 on their float, plus they need to buy floral sheeting that costs $69 per roll. This means that the total cost of buying x floral sheetings would be
307 + 69x
The sophomores, who have spent $342 so far on theirs, still need to purchase vinyl grass at $68 per roll. This means that the total cost of buying x vinyl grass would be
342 + 68x
Since they are buying the same number of rolls to cover the same area, then
307 + 69x = 342 + 68x
69x - 68x = 342 - 307
x = 35
Where is the table and questions Sherlock