2+1=3
15/3=5
split the 3 5's in ratio 2:1 and you get 10:5
Answer:
x = 7
Step-by-step explanation:
recognize that this is a right triangle with one of the internal angles = 45°. This means that the other angle not shown is 180 - 90 - 45 = 45°
This makes the triangle an isosceles triangle.
If so, x must be the same length as the other side adjacent to 90°
i.e x = 7
d. every twentieth name on a roster of all students at school
