To find the interior angle, you use the formula ((n - 2) x 180) / n (where n is the number of sides).
So, ((20 - 2) x 180) / 20 = 162
To find the exterior angle, you merely take away the interior angle from 180.
180 - 162 = 18, so the exterior angle is 18 degrees
Another, easier, way is to just divide 360 by n. All exterior angles always add to 360. Thus, 360 / 20 = 18 degrees
<span><span>x+y</span>+<span>−y</span></span>=<span><span>−4</span>+<span>−<span>y
Answer: </span></span></span>x=<span><span>−y</span>−<span>4</span></span>
Answer:
6 7/24
Step-by-step explanation:
3/2 and 9/10. Look at the denominators. 2 times what number equals 10. That number would be 5. So if you multiply the first fractions denominator by 5 you get 10. Do the same to the top. you get a new fracrion which is 15/10. Add normally. 15/10 + 9/10 = 24/10. In lowest terms it is 2 2/5 (2 wholes and 2 out of 5)
Answer:
When you ear $7 from your chores.
Step-by-step explanation:
Say you owe your friend $7 from that box of candy that they bot you at the movies. You now have -$7 until you gain that money back. So, you did all of your chores, and you made $7! Now you have enough money to pay your friend back. You are now left with $0.
-$7 + $7 = $0