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a )


Two solutions.
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b )


One solution .
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c )


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d )


One solution.
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e )



Two solutions.
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f )


Two solutions .
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Answer:
x = 3
Step-by-step explanation:
ΔABC is 45 45 90 right triangle
The ratio of leg: hypo = a : a√2
Given: hypo AC = 6√2; so AB = BC = 6
ΔBCD is 30 60 90 right triangle
The ratio of short leg : long leg : hypo = x : x√3 : 2x
Hypo. BC = 6 = 2 (3)
So short leg BD = x = 3
Answer:
c.0.13
Step-by-step explanation:
Answer:


Step-by-step explanation:
Let the speed of faster plane be x
therefore ,
speed of slower plane = x - 20
As the time taken is same ,

therefore ,
faster plane travels at a speed of 190 miles/hr
while..
the slower plane travels at a speed = ( 190-20 ) miles/hr
=> 170 miles/hr
hope helpful~