I am making a plan of my room and I am going to use a scale of 1 : 20 for the drawing. The longest wall of my room is 320cm. How big should this be on my plan? Please give your answer in millimetres.

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step-by-step explanation:

853.3

step-by-step explanation:

the area of a triangle is determined by the formula: base x height * 1/2

you'll need to assign a base to the triangle. based on the vertices given, the simplest base would be the line segment from (-2,1) to (2,1). the distance between any two numbers is found by just subtracting them. here, you should subtract the x values to find the distance of this side.

2 - (-2) = 4.

so the distance (aka the length of the base) is 4. the height of the triangle is the distance between the base and the highest point on the triangle which is (3,4). we should subtract the y values this time to find the height/distance.

4 - 1 = 3

so the height is 3.

base = 4

height = 3

hope this if needed hmu

the answer is 15.50 for one mile

b) is slope: 0   y- intercept 15.5