The new perimeter will be 3 times the old perimeter.
Original perimeter:
2(8+7) = 2(15) = 30 yds
New perimeter once they are tripled:
3 x 8 = 24
3 x 7 = 21
2(24+21) = 2(45) = 90 yds
30 x 3 = 90
Let x be the number of miles on the second day
X/17.4=1.12
X=17.4*1.12
X=19.5 miles
Hope this helps!
You could take @ birthday candle (7&8) and warm the wax to draw a 10 on your paper or if u need to write 7 and 8 in the shape of a counter, u could either:
1) draw 7 and 8 on your paper and circle the parts that look like 10 7 could be a slanted 1 and 8 could be your 0
2) you could draw parts of 7 and 8 to make it look like 10
about $4
multiply the bill by 15% to calculate tip
tip = $26.51 ×
= 3.9765 ≈ $4