Answer:
90° - COD
Step-by-step explanation:
Because if it's complementary, the mystery angle and COD add up to 90°
Answer:
both 17 and 19 are right triangles because they both have a right angle
Step-by-step explanation:
Steps to solve:
-k - (3k - 6n) + 2n; k = -3, n = -5
~Substitute and simplify
-(-3) - (3(-3) - 6(-5)) + 2(-5)
3 - (-9 + 30)) - 10
~Use PEMDAS and solve the rest.
3 - 21 - 10
-18 - 10
-28
Best of Luck!
Explanation:If the bank has only quarters and dimes, and its total amount of coins is 250, then be x the amount of quarters it has, it will have 250−x dimes.
A quarter is worth 0.25$, a dime is worth 0.10$ and the 250 coins together are worth 39.25$.
