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Natalija [7]
3 years ago
14

Please Help!! ASAP!!!! I will mark you brainiest!!!!!

Mathematics
1 answer:
Nataly [62]3 years ago
7 0

Answer:

Experimental probability is 60%

Step-by-step explanation:

He has made both throws success full in 12 times out of 20 throws.

12/20=0.6=60%

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A circular pool has a radius of 12 feet. To the nearest square foot, what is the area of the trampoline?
svet-max [94.6K]

Answer:

452 ft.²

Step-by-step explanation:

πr² = 3.14 x 12²

= 452.16

= 452 ft.² (to the nearest square foot)

4 0
2 years ago
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How many different arrangements are there for the word fraction?
nadezda [96]
8! = 8 x 7 x 6 x 5 x 4 x 3 x 2 = 40320.
4 0
3 years ago
Please! Someone help me! You will get a BRAINLIEST if you get this correct!
ivanzaharov [21]

Answer:

  • Yes because 9<em><u>x</u></em><em><u>2</u></em><em><u>+</u></em><em><u>6</u></em><em><u>x</u></em><em><u>=</u></em><em><u>0</u></em><em><u> </u></em><em><u>whe</u></em><em><u>n</u></em><em><u> </u></em><em><u>x</u></em><em><u>=</u></em><em><u>-</u></em><em><u>2</u></em><em><u>/</u></em><em><u>3</u></em>
6 0
3 years ago
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The national mean sales price for a new one-family home is $181,900. A sample of 40 one-family homes in the south showed a sampl
SIZIF [17.4K]

Answer:

a

The  null hypothesis is  \mu  =  \$181,900

The alternative hypothesis is  \mu <  \$ 181.900

b

t = -2.92

c

p-value  =  0.0016948

d

There no sufficient evidence to support the conclusion that the population mean sales prices for new one-family homes in the South is less expensive than the national mean of $181,900

Step-by-step explanation:

From the question we are told that

   The  population mean is  \mu  =  \$ 181, 900

    The  sample size is  n =  40

    The  sample  mean is  \=  x  =  \$ 166,400

      The  sample  standard deviation is s= \$ 33, 500

The  null hypothesis is  \mu  =  \$181,900

The alternative hypothesis is  \mu <  \$ 181.900

 

Generally the test statistics is mathematically represented as

      t =  \frac{ \= x  -  \mu }{ \frac{s}{\sqrt{n} } }

=>    t =  \frac{  166400  - 181900 }{ \frac{33500}{\sqrt{40} } }

=>    t = -2.92

Generally the p-value is obtain from the z-table  the value is  

      p-value  =  P(Z < t ) = P(Z  <  -2.93) = 0.0016948

=>    p-value  =  0.0016948

From the calculation we see that  

     p-value  >  \alpha  hence we fail to reject the null hypothesis

Thus there no sufficient evidence to support the conclusion that the population mean sales prices for new one-family homes in the South is less expensive than the national mean of $181,900

3 0
3 years ago
Brainliest ! 40 points , pls answer all or don't answer
MAVERICK [17]

Answer:

The answer to your question is below

Step-by-step explanation:

1.- Find the volume of the cylinder

Data

diameter = 9 cm

radius = 4.5 cm

height = 15 cm

Formula

   V = πr²h

   V = π(4.5)²(15)

  V = 303.75π         This is te answer for the volume in terms of π

       = 952.78 cm³                

2.- Find the volume of the cylinder

height = 40 yd

radius = 12 yd

Formula

   V = πr²h

   V = π(12)²(40)

   V = 5760π              This is te answer for the volume in terms of π

       = 18086.4 cm³

3.- What is the height .......

height = q

side length = r

4.- Volume of a pyramid

    Volume = Area of the base x height

Area of the base = 11 x 11 = 121 cm²

    Volume = 121 x 18

   Volume = 2178 cm³

6 0
3 years ago
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