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Paul [167]
3 years ago
15

Free poinnttssssssssssssssss and yourr welcomeee

Mathematics
1 answer:
DerKrebs [107]3 years ago
5 0

Answer:

thank youuuuuu

Step-by-step explanation:

have a good day

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A manufacturing process makes rods that vary slightly in length but follow a normal distribution with mean length 25 cm and stan
Galina-37 [17]

Answer:

The probability of randomly selecting a rod that is shorter than 22 cm

P(X<22)  = 0.1251

Step-by-step explanation:

<u><em>Step(i):</em></u>-

Given mean of the Population = 25cm

Given standard deviation of the Population = 2.60

Let 'x' be the random variable in normal distribution

Given x=22

Z = \frac{x-mean }{S.D} = \frac{22-25}{2.60} = -1.15

<u><em>Step(ii):</em></u>-

The probability of randomly selecting a rod that is shorter than 22 cm

P(X<22) = P( Z<-1.15)

             = 1-P(Z>1.15)

             =  1-( 0.5+A(1.15)

             =  0.5 - A(1.15)

             = 0.5 - 0.3749

             = 0.1251

The probability of randomly selecting a rod that is shorter than 22 cm

P(X<22)  = 0.1251

7 0
3 years ago
I need help :)<br> .....
qwelly [4]

Answer:D)

Step-by-step explanation:

5 0
2 years ago
A rectangle’s perimeter and it area have the same numerical value. The width of the rectangle is 3 units. What is the length is
Verdich [7]

Answer:

6

Step-by-step explanation:

3+3+6+6=18

3*6=18

5 0
2 years ago
A building that is 150 m tall, 100 m wide, and 80 m deep has glass on all sides except the roof and the base.
Airida [17]

Answer:

C. 54,000 m^2

Step-by-step explanation:

2 sides + 2 more sides

2(150x100) + 2(150x80)

30000 + 24000

54000m^2

3 0
3 years ago
What is the value of x
Goshia [24]
Sum of all adjacent angles is 180°.

3x + 12 + x = 180
4x + 12 = 180
4x = 168
x = 42°

-----------------------------------------
Answer: x = 42°
-----------------------------------------
3 0
3 years ago
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