We are given that 76 persons can complete the job in 42 days.
We need to find the number of days will 56 persons do the same job.
Let us assume that in x number of days will 56 persons do the same job.
Number of days taken by 1 person to complete same work = 76 × 42 =3192 days.
56 person will take = 
= 57.
<h3>
Therefore, 57 days will 56 persons do the same job.</h3>
Answer: B. Accurate but not reliable
Step-by-step explanation:
An experiment is said to be "reliable" when it consistently gives the same answers when done repeatedly, when the experiment is carried out several times it gives the same result each times.
An experiment is said to be " accurate "
when it produce a correct result using the right procedure and method .
In this case the research assessing a new screening tools for early identification of prostate cancer, test result is "accurate but not reliable ", since the consistent test result was not accurate.
we are supposed to find
Which of these properties is enough to prove that a given parallelogram is also a Rectangle?
As we know from the theorem, if the diagonals of a parallelogram are congruent then the parallelogram is a rectangle.
The other options The diagonals bisect each other is not sufficient because in parallelogram diagonals always gets bisected , parallelogram becomes rectangles only if both the diagonals are of same length.
In a parallelogram The opposite angles and opposite sides are always equal.
Hence the correct option is
The diagonals are congruent.
Answer:
Step-by-step explanation:
x = number of rows
780=x(x+4)
there are 26 rows and 30 students in each row 26*30=780
Answer:
Option (a) is correct.
The value of given function 
at x = 3 is -28
Step-by-step explanation:
Given : Function
We have to find the value of given function at x = 3
Consider the given function
Since, we have tof ind the value of function at x = 3
Put x = 3 in given function f(x)
Simplify, we have,
Thus, the value of given function at x = 3 is -28
