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nydimaria [60]
3 years ago
8

Mrs. Yang is in charge of playing the music while her class plays musical chairs. In the first round, Mrs. Yang played the music

for 20 seconds. In the second round, Mrs. Yang played the music for only 4 seconds.
How many times as long did Mrs. Yang play music in the first round as in the second round?
Mathematics
2 answers:
natulia [17]3 years ago
7 0

Answer:

5

Step-by-step explanation:

20 divided by 4 = 5

4 times 5 = 20

Ede4ka [16]3 years ago
3 0

Answer:

first round=20 sec

seond round=4 sec

20 / 4= 5

Step-by-step explanation:

five times the music was played

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How many solutions does the equation 3x - 7 = 4 + 6 + 4x have?
jeka57 [31]

Answer:

one

Step-by-step explanation:

3x-7=4+6+4x

3x=7+4+6+4x

3x=17+4x

3x-4x=17

-x=17

x=-17

8 0
3 years ago
Help me with this pls
zhannawk [14.2K]

Answer: The answer is 3

Step-by-step explanation:

To find the slope u turn it into a shape it could make such as in this case u are able to make a box like this. For such as u can use this picture to get a better understand but hope this helps :)

6 0
2 years ago
Help with A and B plzzzz
Digiron [165]

a.) The height of the closet is 96 inches, and you want to have 4 rows, so you divide the total height 96 by 4

96 ÷ 4 = 24

So each cube organizer can be a height of 24 inches since it divides out evenly


b.) Each shoe box is 4 1/2 inches, because there are 3 boxes that are stacked on top of each other, you can multiply 4 1/2 by 3, or you can do 4 1/2 + 4 1/2 + 4 1/2.

4 1/2 + 4 1/2 + 4 1/2 = 12 3/2 = 13 1/2

The total height of the 3 boxes is 13 1/2


6 0
2 years ago
Suppose 232subjects are treated with a drug that is used to treat pain and 50of them developed nausea. Use a 0.01significance le
Margarita [4]

Answer:

A

   The  correct option is B

B

   t =  0.6093

C

 p-value  =  0.27116

D

The  correct option is  D

Step-by-step explanation:

From the question we are told that

    The  sample size is  n  =  232

    The  number that developed  nausea  is X =  50

    The population proportion is  p  =  0.20  

 

The  null hypothesis is   H_o : p  =  0.20

The  alternative hypothesis is  H_a :  p > 0.20

Generally the sample proportion is mathematically represented as

     \r p  =  \frac{50}{232}

     \r p  =  0.216

Generally the test statistics is mathematically represented as

 =>           t =  \frac{\r p  -  p }{ \sqrt{ \frac{p(1- p )}{n} } }

=>           t =  \frac{ 0.216 - 0.20 }{ \sqrt{ \frac{ 0.20 (1- 0.20 )}{ 232} } }

=>        t =  0.6093

The  p-value obtained from the z-table is

       p-value  =  P(Z >  0.6093) =  0.27116

  Given that the  p-value >  \alpha  then we fail to reject the null hypothesis

5 0
3 years ago
Find the measures of the indicated angles pictures included!!!
vazorg [7]

Answer:

25

Step-by-step explanation:

The angles b and 65 are complementary, meaning they sum to 90 degrees. You know this because those 2 angles and the right angle are sitting on a straight line. So, together they equal 180 and 180-90 is 90. Therefore, angle b+65 must equal 90. So, simply subtract 65 from 90 to get the answer, 25.

3 0
2 years ago
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