Answer:
5 boxes is needed or 10 kg of seeds so yes!!
Step-by-step explanation:
first of all we know that the area of 9by 5 (9x5) is 45 and 45=3 kg of seed, so divide 45 ( the area) by 3 (the amount of kg) and so 45 ÷ 3 is 15 so now you have a UNIT of 1kg for every 15 square Meters, and 140 needs a little more than 9.3 kg worth of seeds so she has enough :)
The other words are just meant to be confusing just think of ratios :P
1kg:15m
The speed of wind and plane are 105 kmph and 15 kmph respectively.
<u>Solution:</u>
Given, it takes 6 hours for a plane to travel 720 km with a tail wind and 8 hours to make the return trip with a head wind.
We have to find the air speed of the plane and speed of the wind.
Now, let the speed wind be "a" and speed of aeroplane be "b"
And, we know that, distance = speed x time.
Now at head wind →
So, solve (1) and (2) by addition
2a = 210
a = 105
substitute a value in (1) ⇒ 105 + b = 120
⇒ b = 120 – 105 ⇒ b = 15.
Here, relative speed of plane during tail wind is 120 kmph and during head wind is 90 kmph.
Hence, speed of wind and plane are 105 kmph and 15 kmph respectively.
we are given
A ball rolling down a hill was displaced 19.6 m
so,
the final velocity was 5.00m/s
so,
Since, a ball rolling down a hill was displaced
so, we get
we can use kinematic equation formula
Here ,
v is final velocity
u is initial velocity
a is acceleration
h is height from which ball is dropped
now, we can plug our values
................Answer
1/12th of 60 is 5 (5 x 12 = 60)
5 5/10 = 5.5
4 2/10 = 4.2
Add 9.7