Using the relation between velocity, distance and time, it is found that:
- The rate of the plane is of 840 km/h.
- The rate of the wind is of 210 km/h.
<h3>What is the relation between velocity, distance and time?</h3>
Velocity is <u>distance divided by time</u>, that is:
Flying against the wind, an airplane travels 2520 kilometers in 4 hours, that is:
Flying with the wind, the same plane travels 9450 kilometers in 9 hours, hence:
Hence, solving for the wind's speed:
For the plane, we have that:
v = 1050 - 210 = 840.
More can be learned about the relation between velocity, distance and time at brainly.com/question/24316569
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(a+b) (x+y-(y+z)) remove the parentheses
(a+b)(x+y-y-z) remove the opposites
(a+b)(x-z)
Answer: A
Step-by-step explanation:
Try the Desmos graphic calculator!
Answer: 13
Step-by-step explanation: Let me know if you need an explanation.
Answer:
1) 4 days 2) P30 3) P125 4) 6 adult 5) smallest number : 57.77 largest number = 72.22
Step-by-step explanation:
1)
6 litres --> 3 days
1 litres --> 1/2 days
8 litres --> 1/2 * 8 = 4 days
2)
3 ball pens --> P18
1 ball pens --> P6
5 ball pens --> P30
3)
12 pencils --> P60
1 pencils --> P5
25 pencils --> P125
4)
7 children --> 2 adults
1 chldren --> 2/7 adults
21 children --> 2/7 * 21 = 6 adult
5) 4:5
4x+5x=130
x = 130/9
4x = 57.77
5x = 72.222