Use the greedy algorithm to make change using quarters, dimes and pennies (but no nickels) for each of the amounts given. For which of these amounts does the greedy algorithm use the fewest coins of these denominations possible?
a) 87 cents.
b) 49 cents.
c) 99 cents.
d) 33 cents

I’m which figure is point g an orthocenter

For the following geometric sequence, find the recursive formula. {-80, 20, -5, } i need : ')

If m∠abc = 70°, what is m∠abd? justify your reasoning.  using the addition property of equality, 40 + 70 = 110, so m∠abd = 110°.  using the subtraction property of equality, 70 − 30 = 40, so m∠abd = 30°.  using the angle addition postulate, 40 + m∠abd = 70. so, m∠abd = 30° using the subtraction property of equality.  using the angle addition postulate, 40 + 70 = m∠abd. so, m∠abd = 110° using the addition property of equality.