Answer:
20.45%
Explanation:
The probability that the student got a B is

Now, how many students are there in total?
The answer is

How many students got a B?
The answer is

therefore, the probability that the student has got a B is

Hence, the probability that a student has got a B is 20.45%
Trees can be a renewable source , we use them to breath , we make paper out of them , we make houses and etc.
i hope this helps
Nope Copper is a better conductor
When It begins to drop because that when gravity will have its strongest pull on the object.
The vertical weight carried by the builder at the rear end is F = 308.1 N
<h3>Calculations and Parameters</h3>
Given that:
The weight is carried up along the plane in rotational equilibrium condition
The torque equilibrium condition can be used to solve
We can note that the torque due to the force of the rear person about the position of the front person = Torque due to the weight of the block about the position of the front person
This would lead to:
F(W*cosθ) = mgsinθ(L/2) + mgcosθ(W/2)
F(1cos20)= 197/2(3.10sin20 + 2 cos 20)
Fcos20= 289.55
F= 308.1N
Read more about vertical weight here:
brainly.com/question/15244771
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