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konstantin123 [22]
3 years ago
10

Please help with geomtry

Mathematics
1 answer:
crimeas [40]3 years ago
5 0

Here are the answers you were looking for:

A) Yes

B) No

C) No

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e-lub [12.9K]

Answer:

you click on their answer and itll say thanks and give the brainliest answer and when you see that button you click it

Step-by-step explanation:

5 0
3 years ago
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A cafeteria is in the shape of a rectangle. The length of the rectangle is four times its width. The area of the cafeteria is 14
tino4ka555 [31]

Answer:

243 feet

Step-by-step explanation:

5 0
2 years ago
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A simple random sample of 100 8th graders at a large suburban middle school indicated that 81% of them are involved with some ty
Sophie [7]

Answer:

The  interval is  0.7187  < p < 2.421

Step-by-step explanation:

From the question we are told that

      The  sample size is  n  = 100

       The  population  proportion is p  =  0.81

       The  confidence level is  C =  98%

The level of significance is mathematically evaluated as

     \alpha  =  100 -98

    \alpha  =  2%%

    \alpha  =  0.02

Here this level of significance represented the left and the right tail

The degree of  freedom is evaluated as

     df =  n-1

substituting value  

    df =  100 - 1

     df = 99

Since we require the critical value of one tail in order to evaluate the  98% confidence interval that estimates the proportion of them that are involved in an after school activity. we will divide the level of significance by 2

The  critical value of  \frac{\alpha}{2} and the evaluated degree of freedom is  

      t_{df , \alpha } =  t_{99 , \frac{0.02}{2}  }  = 2.33

this is obtained from the critical value table  

The standard error is mathematically evaluated as

             SE =  \sqrt{\frac{p(1-p )}{n} }  

substituting value  

           SE =  \sqrt{\frac{0.81(1-0.81 )}{100} }  

           SE = 0.0392  

The 98%  confidence interval is evaluated as

      p  - t_{df ,  \frac{\alpha }{2} } *  SE  < p <  p  + t_{df ,  \frac{\alpha }{2} }

substituting value  

     0.81  - 2.33  *  0.0392  < p <  0.81  +2.33 *  0.0392

      0.7187  < p < 2.421

     

4 0
3 years ago
Interpreting composite functions in the real world The volume of air in a balloon is represented by the function v(r)=4/3 ³, whe
adoni [48]

There are two <em>true</em> statements:

  1. When the function is composed with r, the <em>composite</em> function is V(t) = (1/48) · π · t⁶.
  2. V(r(6)) shows that the volume is 972π cubic inches after 6 seconds.

<h3>How to use composition between two function</h3>

Let be <em>f</em> and <em>g</em> two functions, there is a composition of <em>f</em> with respect to <em>g</em> when the domain of <em>f</em> is equal to the range of <em>g</em>. In this question, the <em>domain</em> variable of the function V(r) is replaced by substitution.

If we know that V(r) = (4/3) · π · r³ and r(t) = (1/4) · t², then the composite function is:

V(t) = (4/3) · π · [(1/4) · t²]³

V(t) = (4/3) · π · (1/64) · t⁶

V(t) = (1/48) · π · t⁶

There are two <em>true</em> statements:

  1. When the function is composed with r, the <em>composite</em> function is V(t) = (1/48) · π · t⁶.
  2. V(r(6)) shows that the volume is 972π cubic inches after 6 seconds.

To learn on composition between functions: brainly.com/question/12007574

#SPJ1

7 0
2 years ago
A gardener measures every plant in her garden and notes that 28% are under 6 inches, 54% are between six and 8 inches and the re
Norma-Jean [14]

A gardener measures every plant in her garden and notes that 28% are under 6 inches, 54% are between six and 8 inches and the rest are above 8 inches. if she wants to make a bar graph to depict her data, where should the vertical axis begin to ensure it’s not misleading?

Answer: Option C) 0 in is correct

Vertical axis should begin with 0 inches in order to ensure the bar graph is not misleading because 28% of the plants in the garden are measuring less than 6 inches.

If the vertical line begins with 6 inches, the 28% of the plants which are less than 6 inches would not be shown, thus leading it to be misleading.

If the vertical line begins with -6 inches, the negative numbers will be misleading as there will not be any plant with negative height

If the vertical line begins with 28 inches, we will be missing most our data as most of the plant's have height less than 8 inches


7 0
4 years ago
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