Answer:
2/3
Step-by-step explanation:
Look at attachment...
For given problem:
Put midpoint of ellipse, (0,0) at epicenter of bridge at
ground level.
Specified length of vertical major axis = 70=2a
a=35
a^2=1225
Equation of ellipse:
x^2/b^2+y^2=1
plug in coordinates of given point on ellipse(25, 10)
25^2/b^2 + 10^2/a^2 = 1
625/b^2 + 100/1225=1
625/b^2 = 1 - 100/ 1225 = .918
b^2 = 625/.918 ≈ 681
b ≈ 26.09
length of minor axis = 2b = 2(26.09) ≈ 52.16 ft
Span of bridge ≈ 52.16 ft
Answer:
Length = 8
Step-by-step explanation:
If Area = L • W then if we have the area and the width we should divide the Area by the width to get the length.
6 2/5 divided by 4/5 = 8
Steps:
1) convert 6 2/5 to improper fraction and switch sign: 32/5 • 5/4 = 8
Hope I helped!