# Twenty air-conditioning units have been brought in for service. Twelve of them have broken compressors, and eight have broken fans. Seven units are chosen at random to be worked on. What is the probability that three of them have broken fans

Step-by-step explanation:

Let the probability that the units that have broken fans from the seven units chosen at random be x.

The probability that three of them have broken fans will be 0.3576. Check the attachment for details

## Related Questions

Which one does not belong? Explain your reasoning.y = 4x + 3
y = -4x + 5
y = 1/4x + 5
y = 4x - 5

y=-4x + 3

Step-by-step explanation:

its the only one with a negative slope

I WILL MARK BRAINLIEST !!!Choose the slope and y-intercept that correspond with the graph.​

slope -1/3 and y-intercept is -1

Step-by-step explanation:

the last one

Step-by-step explanation:

A trapezoid has an area of 975 square meters. The height of the trapezoid is 50 ​meters, and the length of the longer base is twice that of the shorter base. Find the length of each base of the trapezoid.

Area of trapezoid(A) =(1/2) (b1 + b2)*h

b1= x   - shorter base
b2=2x  - longer base
A=975 m²
h=50 m

975 =(1/2) (x + 2x)*50
975 = 25*3x
975 = 75x
x=975/75 = 13 m

x= b1 = 13 m
b2=13*2=26 m

b1=13 m,
b2 = 26 m,

How many quarts of water does Paul need to add to keep theconsistency of the concrete the same? Complete the ratio square
Plzzz help!!!

6

Step-by-step explanation:

i took the quiz

• Step-by-step explanation:

What is the value of the expression |5x+12| when x=5

|5x+12| when x=5

I5*5=12I

I37I

37

Step-by-step explanation:

37

Step-by-step explanation:

X=5

5x=(5×5)=25

25+12=37

15 dividido en 200 . De una forma fácil para explicar a un niño por favor