Answer:
36km hr
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
Answer:
69, -69
Step-by-step explanation:
If the number is positive, the opposite of it is the same number, but negative.
If the number is negative, the opposite of the number is the same number, but positive.
So, -69 would be 69.
69 is the opposite of -69, so the opposite of 69 would go back to -69.
165 is answer we also use a formula
5 ( n/2(2a + ( n-1)d)
in that n=6 ,a=3 , d= 1
