Answer:
x=19.4
Step-by-step explanation:
a^2+b^2=c^2
x^2+8^2=21^2
x^2+64=441
x^2=377
square root of 377 is 19.41648784
rounded would be 19.4
Answer:
see the step below, but I'm not sure if this you want
Step-by-step explanation:


20*65 = 1300
That's the price without tax.
Now to find tax:
1300*.035 = 45.5
1300+45.5 = $1345.5
$1345.5 is your total
Answer:
330
Step-by-step explanation:
When we are at 30 degrees on the unit circle, we are at the point (
/2, 1/2) so if we go to -30 degrees (330 degrees), we will be at point (-
/2, -1/2).
Note: (cosine, sine)