add them together then divide by 5
81 +86 +81 +76 +71 = 395
395/5 = 79
your average was 79
I'm pretty sure k doesn't have a value it is no solution
Answer: 115 - (-30) = 115 + 30 = 145 degrees change
Step-by-step explanation:
First, let the number of skis rented by x and the number of snowboards rented by y. We can then assemble the first equation from the amount of money made from the rentals.
44x + 58y = 2232
The second equation can come from the fact that 9 more skis were rented than snowboards.
y = x - 9
Therefore our system is:
44x + 58y = 2232
y = x - 9
Answer:
Step-by-step explanation:
BC=AD
3x-1=x+5
3x-x=5+1
2x=6
x=3
BC=3×3-1=8
CD=2x=2×3=6
perimeter=2(8+6)=2(14)=28
