Answer:
48 students.
Step-by-step explanation:
25% of total students = 12
suppose,
total students= x
so,
25% of x=12
(25/100)*x=12
25*x=(12*100)
x=1200/25
x=48
therefore,
x= total students= 48.
24 = x% * 32
24= x/100 * 32
Multiply 100 on both sides.
2400 = x * 32
32x = 2400
Divide 32 on both sides.
x = 2400/32
x = 75
75 percent<span> of 32 is 24</span>
Answer:
The area of the rectangle is 42 units^2
Step-by-step explanation:
we know that
The area of rectangle is equal to

In this problem
AB=DC
BC=AD
see the attached figure with letters to better understand the problem
we have that

the formula to calculate the distance between two points is equal to

we have the points

<em>Find out the distance BC</em>
we have

substitute in the formula



<em>Find out the distance AB</em>
we have

substitute in the formula



<em>Find out the area</em>

we have


substitute

Answer:
w>0.9
Step-by-step explanation:
7.2-3w<4.5
-7.2 -7.2
-3w<-2.7
/-3 /-3
w>0.9
The inequality switches when divided by a negative.
-hope it helps
Answer:
The conclusion is that the researcher was correct
Step-by-step explanation:
From the question we are told that
The sample size is 
The sample mean is 
The standard deviation is 
The significance level is 
The Null Hypothesis is 
The Alternative Hypothesis is 
The test statistic is mathematically represented as

Substituting values


Now the critical value for
is

This obtained from the critical value table
So comparing the critical value of alpha and the test value we see that the test value is less than the critical value so the Null Hypothesis is rejected
The conclusion is that the researcher was correct