90 dimes = $9 because 10 dimes = $1
First you need to know the definition of a complementary angle. That means that two angles add up to 90 degrees, or a right angle.
To find an angle complementary to a 78 degree angle, you need to subtract 78 from 90.
90 - 78 = 12
Answer:
she saved $5.25
Step-by-step explanation:
