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natka813 [3]
3 years ago
12

Suppose ACT Science scores are normally distributed with a mean of 20.8 and a standard deviation of 5.2. A university plans to s

end letters of recognition to students whose scores are in the top 12%. What is the minimum score required for a letter of recognition? Round your answer to the nearest tenth, if necessary.
Mathematics
2 answers:
erik [133]3 years ago
3 0

Answer:

20.854

Step-by-step explanation:

Pachacha [2.7K]3 years ago
3 0

Answer:

Hello,

Answer 26.9

Step-by-step explanation:

z=\dfrac{x-m}{\sigma} \\m=20.8\\\sigma=5.2\\\\p(z>?)\geq 0.12\ \longrightarrow 1-p(z\leq ?)=(1-0.12))\\\\Using\ table\ of\ normal\ reduce\ with\ 4 \decimals : ?=1.175\\\\x=1.175*5.2+20.8=26.91\approx{26.9}

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What is the surface area of the solid that this net can form?
Tanya [424]

Answer:

730

Step-by-step explanation:

separate each rectangle

use the formula to calculate the area of each rectangle.

1st rectangle

area = length ×breadth

length =5, breadth =8+25+8=41

A1=5×41=205

2nd rectangle

A2=8×25=200

....

A3=5×25=125

A4=8×25=200

Add all As and you have your ans 730

8 0
3 years ago
Read 2 more answers
The Springfield water tower, shown below, has a diameter of 24 meters.
Nataly [62]

Answer:

≈ 6360 m³

Step-by-step explanation:

Volume of a cylinder = πr²h

radius = 12 m,  h= 42.2 m

Therefore;  V = 3.142 × 12² × 42.2      

                      = 19093.3056 m²

Since the tank 1/3 full of water;

Volume = 1/3 × 19093.3056 m³            

                = 6364.4352 m³            

                  ≈ 6360 m³

7 0
3 years ago
Read 2 more answers
HELP PLEASE MY WORK HAS TO BE DUE IN A FEW MINUTES PLEASE HELP
PilotLPTM [1.2K]

Given: 2/3 every 30 seconds

If we cut 2/3 in half, we get 1/3. This would also mean we cut the time in half 30 / 2 = 15 seconds

Therefore, 1/3 of the length every 15 seconds.

15 + 15 + 15 = 45 seconds to go the full length of the path

3 0
3 years ago
WILL GIVE BRAINEST TO CORRECT ANSWER (50 points)
Phoenix [80]

Answer:

children's: 111 and adults: 62

Explanation:

  • given total number of people 173
  • total amount received is $306
  • during the process, we shall consider x as children and y as adult

make equations:

x + y → 173    [ this was from total people ]

1.5x + 2.25y → $306   [ this was from cost ]

try to make x the subject:

x + y → 173

x → 173 - y ______equation 1

1.5x + 2.25y → $306

1.5x → 306 - 2.25y

x → \frac{ 306 - 2.25y }{1.5} __________equation 2

solve them simultaneously:

\frac{ 306 - 2.25y }{1.5} = 173 - y

306 - 2.25y = 259.5 - 1.5y

-2.25 + 1.5y = 259.5 - 306

-0.75y = -46.5

y = 62

so there were total 62 adults that day in the public swimming pool.

find children's using:

x → 173 - y

x → 173 - 62

x → 111

so there were total 111 children's  that day in the public swimming pool.

4 0
2 years ago
How do you Identify and contrast the differences between the rise in prices due to inflation and the rise in prices in microecon
andrezito [222]

One can Identify the differences between the rise in prices due to inflation and the rise in prices in microeconomic markets by?

  • Observing the trends in prices.
  • Observing Demand and supply curve.

<h3>Contrast the differences between the rise in prices due to inflation and the rise in prices in microeconomic markets.</h3>

The difference that exist between a rise in price due to the inflation and a rise in price due to microeconomic markets is based on the price changes that has occurred in terms of demand and supply model.

Note that this is said to be the price in a given market but the price rise as a result of to inflation tells that the price rise is one that reaches a lot of markets and not only just one market.

Hence, One can Identify the differences between the rise in prices due to inflation and the rise in prices in microeconomic markets by?

  • Observing the trends in prices.
  • Observing Demand and supply curve.

Learn more about inflation from

brainly.com/question/777738

#SPJ1

7 0
2 years ago
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