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:
Angle rotation 120 ,90,60,45
Use the ratio of map distance to real distance.
3 cm : 15 km
Divide both sides by 3.
1 cm : 3 km
Convert both cm and km to meters.
0.01 m : 3000 m
Divide both sides by m, and multiply both sides by 100.
1: 300,000
Answer:
The last one is incorrect
Answer: 0
Step-by-step explanation:
2(2x-4)=4(x-2) - Start off by diong distributive property on both sides
4x-8=4x-8 - Add 8 to both sides toget rid of it
4x=4x - Divide both sides by 4
0 = 0 - The 2 equations are equal therefore the answer is 0
Hope this helps!