Answer:
90
Step-by-step explanation:
Answer:
Step-by-step explanation:
n and d are the number of nickels and dimes, respectively.
"there are 20 coins"
n+d = 20
d = 20-n
"total value is $1.40"
0.05n + 0.10d = 1.40
0.05n + 0.10(20-n) = 1.40
-0.05n + 2 = 1.40
0.05n = 0.6
n = 12
d = 20-m = 8
3.6 * 10^(-3) is the scientific notation
The answer for this problem is 7
Answer: 18°F
Step-by-step explanation: if you add 21 and -3 you get 18
