Answer:
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against the wind, an airplane travels 3640 km in 7 hours.
with the wind, the same plane travels 6000 km in 6hrs.
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let speed of plane in still air be x mph
speed of wind be y mph.
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t=d/r
..
against wind speed = x-y mph
with wond speed = x=y mph
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3640/(x-y)=7
3640 = 7x-7y
/7
520=x-y.....................1
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6000/x+y = 6
6000 = 6x+6y
/6
1000=x+y.....................2
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Add (1) & (2)
2x=1520
/2
x=760 mph speed of plane in still air
...
plug value of x in 2
1000=760+y
100-760=y
240 = y
240 mph speed of wind
Answer:
Step-by-step explanation:
Let the office charge = x
Amount paid by Medicare = ⅞x
Amount paid by Ross = ¼(⅞x) = $262.50
Solve for x
Check:
OK.
Answer:
Questions 1 and 3 already answered
<h3>Q2</h3>
<u>Angles 1 and 3 are corresponding angles and therefore have same value:</u>
1. Subtract the 6 from both sides
n/5= -10
2. Multiply both sides by 5
n= -50
To find V(6), we must plug in the number 6 for r in the equation.
<span>V(r)=9*pi*r^2
V(6) = 9*pi*(6)^2
= 9*pi*36 = 324*pi or </span><span>1017.88</span>
