An incoming class has 110 beginning psychology majors. According the record 20% of them will <span>either change their major or will drop out of the school. 20% of 110 is:
20/100 *110=22
So, 22 students will change their major or will drop out of the school.
The probability that as many as 30 of 110 students leave the psychology program is zero . 22 < 30 which means that the number of the students who will leave the psychology program will always be smaller than 30. </span>
Answer:
12 cm ×5cm
Step-by-step explanation:
To find the dimensions of the airplane ticket, let's assume that the airplane ticket is a rectangle.
Area of rectangle= length ×width
Perimeter of rectangle= 2(length +width)
Let the length and width of the plane ticket be L and W cm respectively.
From the area of the ticket,
LW= 60 -----(1)
From the perimeter of the ticket,
2(L +W)= 34
Divide both sides by 2:
L +W= 17 -----(2)
Let's solve the equations by substitution.
From (2):
L= 17 -W -----(3)
Substitute (3) into (1):
(17 -W)(W)= 60
17W -W²= 60
W² -17W +60= 0
Factorise:
(W -5)(W -12)= 0
W -5= 0 or W -12= 0
W= 5 or W= 12
Substitute into (3):
L= 17 -5 or L= 17 -12
L= 12 or L= 5
Thus, the dimensions of the ticket is 12 cm ×5 cm.
Answer:
the value is 60
Step-by-step explanation:
Answer:
Step-by-step explanation:
A square surface is determined by the product of its sides
s = L ^ 2
Thus, the surface of the cardboard of side C, will be
x ^ 2 + 12x + 36 = C ^ 2
Factoring
(x + 6) (x + 6) = C ^ 2
THE SIDE IS (x + 6)