Answer:
159 degrees
Step-by-step explanation:
A full semicircle (or half circle) has a degrees of 180. And x is equal that semicircle so x = 180, now if we subtract 21 from 180 we get 159, so X = 159.
I'm assuming your allowed to use a calculator for this? That's what I would do.

To go about the fraction, take the whole number and times it by the denominator, then add in the numerator to create a new fraction(a whole one not mixed). Then simply divide the numerator by the denominator.


193 is the new numerator and the new whole fraction is this and dividing it out gives you,

For the third one, just input it into a calculator,
multiply the top equation by 3, multiply the bottom equation by 4, then subtract the bottom equation from the top equation
multiply the top equation by 3, multiply the bottom equation by -2, then add the equations
121'
48 plus 70=118
360-118=242
242/2=121
Step-by-step explanation:
3x7=21
21x2=42
total 42 carrots