It looks like the length of a and b should be the same. You can use the Pythagorean theorem (only works with right triangles):
a² + b² = c² (c is the hypotenuse or the longest side of the triangle, a and b are the other side lengths of the triangle)
a² + (4)² = (5)²
a² + 16 = 25
a² = 9
a = 3
a and b have a length of 3
B does not lie on the graph of the line -2x + 3y = 6
If we substitute the x and y value from B into the equation; ( 6 = x and -2 = y), both sides of the equation will not be equal;
-2x + 3y = 6
-2 (6) + 3(-2) = 6
-12 + (-6) = 6
-18 = 6
Since both sides of the equal sign are not 6, the point does not lie on the line.
6/25 = 0.24
0.24 • 100 = 24%
6 = amount of cars that went over the limit
25 = total amount of cars
24% of the cars went over the speed limit.
Answer:
60 degrees.
Step-by-step explanation:
We use trigonometry of a right angled triangle:
Adjacent side = 20 ft, Hypotenuse = 40 ft.
cos x = adjacent / hypotenuse = 20/40 = 1/2
x = 60 degrees.