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3 years ago

I don't understand the steps how to solve it

Mathematics

1 answer:

serious [3.7K]3 years ago

7 0

I think u have to find out what y equals

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In 2012, entering freshmen at the UA have an average ACT score of 25.4 with a standard deviation of 2.1. 1. What is the probabil

astra-53 [7]

Answer:

P [ Z > 24,1 ] = 72,24 %

Step-by-step explanation:

P [ Z > 24,1 ] = 1 - P [ Z < 24,1 ]

P [ Z < 24,1 ] = ( Z - μ₀ ) / σ

P [ Z < 24,1 ] = ( 24,1 - 25,4) / 2,1

P [ Z < 24,1 ] = - 1,3/ 2,1

P [ Z < 24,1 ] = - 0,6190 ≈ - 0,62

We look in z-table and find for z(score) -0,6190

P [ Z < 24,1 ] = 0,27763

Then

P [ Z > 24,1 ] = 1 - 0,27763

P [ Z > 24,1 ] = 0,72237 ⇒ or P [ Z > 24,1 ] = 72,24 %

4 0

3 years ago

if one inch represents 12 feet ,what dimentions whould you use to make a scale drawinng of a building 75 feet by 80 feet?

alina1380 [7]

Answer:

Step-by-step explanation:

1 inch to 12 ft = x inches to 75 ft

1 / 12 = x / 75

cross multiply

12x = 75

x = 75/12

x = 6.25 or 6 1/4 inches

1 inch to 12 ft = x inches to 80 ft

1 / 12 = x / 80

cross multiply

12x = 80

x = 80/12

x = 6.67 or 6 2/3 inches

so the dimensions are : 6 1/4 inches by 6 2/3 inches <====

4 0

4 years ago

What type of graph is this?<br> not a regular graph<br> a regular graph

Ivanshal [37]

That is not a regular graph

5 0

3 years ago

Need help to find the answer

Ahat [919]

Answer:

PQ = 16

Step-by-step explanation:

PQ + QR = PR

(x + 6) + (3x) = 5x -4

4x + 6 = 5x -4

x = 10

10 + 6 = 16

8 0

3 years ago

Is -4.92 a rational number

Irina-Kira [14]

Yes, its also an integer, rational and real number

4 0

3 years ago