The answer is d because if you compare feet to yards 3 feet= 1 yard so divide 630 and 285 by 3 and then multiply them which ends up in 19,950. Your Welcome!
H e r e i s t h e a n s w e r !
The vertex can be found at x=0, i.e, h=290. The vertex tells us that the bridge is 290 ft. high at its' midpoint. The max width is when y=0, or, in other words:
0.0159x²=290
x²=290/.0159= 18239
x=±135.05
The distance between the feet of the arch is 2x135.05, or 270.10
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Answer:
y=-1/5x+4
Step-by-step explanation:
slope of y=5x-4 equals 5; a perpendicular line must be -1/5
6=-10(-1/5)+b
6=2+b
b=4
