Answer:
it false
Step-by-step explanation:
It took 3 days to complete a work by 10 people.
<h3>What is Efficiency?</h3>
The efficiency is the output of the work which we divide by the work input and then express it in a percentage form.
Here, Efficiency of 1 person to complete a piece of work in 30 days is 1/30.
The number of days to complete the work = n days
Number of person to complete the work = p.
Now, according to question
Number of days to complete the work by 10 people = 30 / 10
= 3 days.
Thus, it took 3 days to complete a work by 10 people.
Learn more about Efficiency from:
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Answer:
∠ VWU = 48°
Step-by-step explanation:
Since VW and VU are congruent then the triangle is isosceles with 2 base angles being congruent , that is
∠ VWU = ∠ VUW , then
∠ VWU = 
= 
= 48°
Answer:
Probability, P(X=3)=0.05371
Step-by-step explanation:
The experiment consists of 12 Bernoulli trials,n=12
Where sucess is defined with difference between the speakers and failure is defined with no difference between the speakers
Since people are guessing,the Probability P of sucess= 1/2
Therefore P(X=3) = b(3; 12, 0.5) = (12/3) (0.5)^3× (0.5)^9
P( X=3) = 0.0537
Since a pentagon can be divided into 3 triangles and each triangle has interior angles equal to 180, 3 * 80 = 540. All the interior angles of a pentagon add up to equal 540. We are given the first one of 140. That is where we will start. The angle right next to that one to the right is supplementary to the 60 degree exterior angle, so the measure of the next interior angle is 180 - 60 = 120. The angle next to that in line has an exterior angle measure of 84. So 180 - 84 = 96. Next in line is an angle with an exterior measure of 68, so 180 - 68 = 112. Adding up all the bolded angle measures gives us that the last interior angle measures 72. But we want the measure of x which is an exterior angle. 72 and x are supplementary, therefore, 180 - 72 = x. x = 108. Choice B.
