Hello,
sin(-45°)=-√2 /2 =-0,7071067....
If 26 problems are 65%, then you can figure out the number of all of the problems.
26/x=65/100
65x=2600
x=40
If there are 40 total problems and Frank has done 26, he needs to complete 14 more.
9/10,
3/4 = 15/20
9/10 = 18/20
Clearly 9/10 is greater.
The answer is letter C and E.
For A and B, they look like a linear transformation, however
when you add the constants, it will not zero out. For letter D, it is not a linear
transformation because of the scalar multiplication. The value given in D is an
absolute value, so whether or not you multiply this, it will not result to the
same number.