Answer:
9.4
Step-by-step explanation:
6x+1.6=58
-1.6 -1.6
6x=56.4
/6 /6
=9.4
im assuming you need to know the length of the 7 equal bits of ribbon. the original length of ribbon - the length of ribbon left over = 7x
170.9-16.2=154.7. 154.7/7=x = 22.1
each length of ribbon was 22.1 inches long
3 hours =180mins
marrisa 15,28,42,56,68,80,92,104,116,128,140,152,164,176,188,
john 15,45,75,105,145,175,205
stephanie 15,60,105,150,195
no there alarm didnt go at the same tiem after the first time
(1) circumference of a circle = 2π.R
(2) area of a circle = π.R²
Area = 452.16 m² (given), so we can calculate the radius:
452.16 = π.R²
452.16/π = R²
143.92 = R² → R =√143.92 ≈ 12 m
Having R = 12, now we can calculate the circumference :
circumference of a circle = 2π.R = 2.π.12 = 75.41 m
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