Answer:
you can simplify rations just like you simplify fractions. Whenever you are able to evenly divide both parts of the ratio with out changing the equation's answer, you are able to.
for example
if it were 3:6, you can simplify this by dividing these both by 3, leaving you with 1:2.
As what I can observe, the pathway can be formed with 2 right triangles. Thus, I'll get the area of the 2 right triangles and multiply its area by the paving cost per square meter.
Area of Right Triangle: ab / 2
a = 6 2/3 m ⇒ 20/3 m; b = 3m
Area of 1 triangle= (20/3 m * 3 m) ÷ 2 = 20 ÷ 2 = 10 m²
Area of 2 triangles = 10m² * 2 = 20 m²
Total cost = $40 * 20m² = $800
The CORRECT answer is B. (-1,-3)
I hope this helps.
Have a "AWESOME" day. :)
Slope intercept
y=mx+b
m=sllope
given
m=-5
find b
y=-5x+b
given
(2,5)
means x=2 and y=5 is true
5=-5(2)+b
5=-10+b
add 10
15=b
y=-5x+15
