Answer:
he gained 2,100
Step-by-step explanation:
Answer:
Step-by-step explanation:
n=q-9
5n+25q=465, using n from above this becomes
5(q-9)+25q=465
5q-45+25q=465
30q-45=465
30q=510
q=17, and since n=q-9
n=17-9
n=8
So Melinda has 8 nickels and 17 quarters.
9514 1404 393
Answer:
21 1/3 grams
Step-by-step explanation:
The mass is the product of the volume and the density. The volume of a cube is the cube of its edge dimension.
M = Vρ
M = (4 cm)³×(3 g/cm³) = 64/3 g
The mass of the cube is 64/3 = 21 1/3 grams.
Multiply first
100x50=5000
5000-32=4968
The answer is 2000 customers paid the old rate, the remainder (500) paid new rate