Question

1)find the angles of a traingle if they are in the ratio 2:5:8
2)two numbers are in the ratio 2:7.
If their sum is 99, find the numbers
PLZ ANSWER THIS QUESTIONS QUICKLY TODAY IS MY EXAM

Answer 1

1) Sum of angles of a triangle = 180°
Lex the three angles be 2x, 5x and 8x
2x + 5x + 8x = 180°
15x = 180°
x = 180°/15 = 12°
x = 12°
2x = 24°
5x = 60°
8x = 96°
2) Let the no be 2x and 7x
2x + 7x = 99
9x = 99
x = 99/9 =11
2x = 2 * 11 = 22
7x = 7 * 11 = 77
Hence the two no. are 22 and 77.
Hope this answer helps you.......

Answer 2

1st.

Let the angles be 2x,5x and 8x.
ACQ,

2x+5x+8x = 180
15x = 180
x= 12.
1st.angle = 24*
2nd angle = 60*
3rd angle = 96*

2nd.

Let the numbers be 2x and 7x.
ACQ,

2x+7x = 99
9x = 99
x = 11
1st.number = 22
2nd number = 77

Hope that it will help you