Hello :
6-11=11-16=16-21=-5
<span> the sequence is arithmetic r=-5
</span><span>a recursive definition is : an+1 = an -5</span>
3. 7 times 3 equals 21 and 21+25=46.
9514 1404 393
Answer:
32 coins
consider the value of a group of coins
Step-by-step explanation:
The coins are in equal numbers, so they can be considered as a group. The value of one group of 4 coins is ...
1¢ + 5¢ + 10¢ + 25¢ = 41¢ = $0.41
Then the number of groups (g) of coins is ...
$3.28 = $0.41×g
g = $3.28/$0.41 = 8
There are 8 groups of coins. Each group has 4 coins, so there are ...
(8 groups)×(4 coins/group) = 32 coins
Not a conic section. No equation, I think
