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QveST [7]
2 years ago
14

Please help due tmr I also have 2 more questions!

Mathematics
1 answer:
Marina CMI [18]2 years ago
6 0

Answer:

17

Step-by-step explanation:

n = 17

n - 7 = 10

Carry over the - 7

n = 7 + 10

n = 17

You might be interested in
In a recent year, a sample of grade 8 Washington State public school students taking a mathematics assessment test had a mean sc
Daniel [21]

Answer:

The  number is  N  =1147 students

Step-by-step explanation:

From the question we are told that

    The population mean is  \mu  =  281

     The standard deviation is  \sigma  =  34.4

    The sample size is  n = 2000

percentage of the would you expect to have a score between 250 and 305 is mathematically represented as

      P(250 <  X <  305 ) =  P(\frac{ 250 - 281}{34.4 }  <  \frac{X - \mu }{\sigma }  < \frac{ 305 - 281}{34.4 }   )

Generally  

             \frac{X - \mu }{\sigma }  =  Z  (Standardized \ value \  of  \  X )

So  

         P(250 <  X <  305 ) =  P(-0.9012<  Z

       P(250 <  X <  305 ) = P(z_2 < 0.698 ) -  P(z_1 <  -0.9012)

From the z table  the value of  P( z_2 < 0.698) =  0.75741

                                         and  P(z_1 < -0.9012) =  0.18374

     P(250 <  X <  305 ) = 0.75741 - 0.18374

      P(250 <  X <  305 ) =  0.57

The  percentage is  P(250 <  X <  305 ) =  57\%

The  number of students that will get this score is

           N  = 2000 * 0.57

           N  =1147

6 0
3 years ago
Plz I need help help me plzzzz
Annette [7]

Answer:

4400

Step-by-step explanation:

15 percent is 660

this means 1 percent is 44

this means 100 percent is 4400

please give me brainliest!<3

5 0
3 years ago
sandy has several pichters.2 pitchers hold 64 ounces each and 4 pichers hold 48 ounces each.how mant ounces can sandys pitcher h
vfiekz [6]
To answer this question you you start by writing the equation. (2*64)+(4*48)= Next, you answer the first parenthesis: 2 times 64... this is 128....now you have 128+(4*48)=... now you answer the next set of parenthesis.... 4 times 48....this is 192...now you have 128+192=.....this is 320...............So the answer to your question is sandys pitcher can hold 320 ounces alltogether.

6 0
3 years ago
How do you prove that lines are similar in triangles if it is parallel? (look at photo)
Ghella [55]

Answer:

they are similar cuz it resembles a "z" pattern. The angles are so the same.

5 0
2 years ago
A die is tossed. find the odds against rolling a number greater than 1
masya89 [10]

Answer:

5/6

Step-by-step explanation:

cuz there's 6 sides and there are 5 more sides than the 1

6 0
2 years ago
Read 2 more answers
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