Answer:
y = -2x - 2
Step-by-step explanation:
The perp line is simply taking the negative reciprocal of the slope.
In this cale if +1/2 is the slope of the line, the flip it to get 2/1 which is just 2. Then multiply it by a negative.
Since you are rounding to the nearest whole number, look at the digit in the tenth place. If it is 5 and greater, round up, if it is 4 and lower, round down
25.311 = 25
4.65 = 5
25 x 5 = 125
125 is your answer
hope this helps
The dirty little secret about trig is students mostly just need to understand the 45/45/90 right isosceles triangle and the 30/60/90 triangle, which is half an isosceles triangle.
I'm sure you have seen it many times already, so I'll remind you in the 30/60/90 right triangle the sides opposite those angles are respectively in the ratio

. Remember the smallest side is always opposite the smallest angle, etc. These make a right triangle because

So in this hypotenuse 2 triangle, the length 1 side is opposite the 30 degree angle and the

side is adjacent to it.
We could jump right to the answer but let's enumerate all the trig functions. Really you should memorize the sine and cosine so you can get these quickly.






We want the cotangent, another way to get it is
To answer this we would need the expressions given.
Answer:
5
Step-by-step explanation:
The easiest way is to subtract.
2.75 - (-2.25) = 2.75 + 2.25 = 5