Step-by-step explanation:
6/10
divided by 2
3/10
divided by 1/2
3/5
4/15=x/75
4*75=15*x
300=15x
x=300/15
x=20
-50 because its the furthest away from zero
The right statements are: A, B and E
Sin(A)=cos(B)
then we check if using x=9 this holds true:
sin(6x-10)=cos(4x+10)
sin((6*9)-10) = sin(44º)
cos(4x+10)=cos(46)
Sin(44)=0.694=cos(46)
then a is true
Now, we know that b