Yes it is the same. 1/4 +1/4 = 1/2. so 9/10-1/2=9/10-1/2
The largest perfect square factor of 18 is 9.
1/10 vs 1/12
6 mins vs 5 mins
6>5
5 is faster
2nd time was faster
Sine of angle = opposite ÷ hypotenuse
sin 20 = 
x = 
x = 40.9 (rounded up to nearest tenth)