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malfutka [58]
3 years ago
14

3 x is greater than 3 but lower than 6

Mathematics
1 answer:
Kipish [7]3 years ago
4 0

Answer:

i don't knoy why thoght

Step-by-step explanation:

................................

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I HAVE 5 MINUTES LEFT HELPPPP PLEASE IM BEGGING!!!!
Nady [450]

Answer:

It is B and D

Step-by-step explanation:

They are both x and y functions

8 0
3 years ago
What's the order pairs of 5x-2y=18​
KiRa [710]

Answer:

(2,-4) ,(0,-9)

Step-by-step explanation:

5 0
4 years ago
HELP MEE PLEASE HELP
SOVA2 [1]

Answer:

42.75

Step-by-step explanation:

area of one piece, length x width:    3 x 4 3/4

                                                                14.25

area of 3 pieces:   14.25(3)= 42.75

8 0
3 years ago
Two hundred undergraduate students were randomly selected from a university that has 47,000 students in total. Systolic blood pr
Hoochie [10]

Answer:

The  correct option is d

Step-by-step explanation:

From the question we are told that

    The  population size is  N  =  47000

    The  sample size is  n  =  200

     The  sample mean is   \= x  =  118.0 \ mmHg

     The  standard deviation is  \sigma  =  11.0 \ mmHg

     

Given that the confidence level is  95% then the level of significance can be calculated as

                     \alpha  =  100 -  95

                    \alpha  =  5 \%

                      \alpha  =  0.05

Next we obtain the critical value of  \frac{\alpha }{2} from  z-table , the value is  Z_{\frac{\alpha }{2}  } =  Z_{\frac{0.05 }{2}  } = 1.96

The reason we are obtaining critical value of   \frac{\alpha }{2} instead of    \alpha is because  

 \alpha represents the area under the normal curve where the confidence level interval (   1-\alpha) did not cover which include both the left and right tail while  

 \frac{\alpha }{2}  is just the area of one tail which what we required to calculate the margin of error .

NOTE: We can also obtain the value using critical value calculator (math dot armstrong dot edu)

  Generally the margin of error is mathematically represented as

            E  =  Z_{\frac{\alpha }{2} } *\frac{\sigma }{ \sqrt{n} }

substituting values

           E  =  1.96 *\frac{11.0  }{ \sqrt{200} }

           E  = 1.5245

The  95% confidence level interval is mathematically represented as

       \= x  -  E < \mu < \= x  +  E

substituting values

       118.0   -  1.5245 < \mu < 118.0   +  1.5245

        116.5< \mu < 119.5

         [116.5 , 119.5]

 

6 0
3 years ago
Find inverse for Y=2x-7
dalvyx [7]

Answer:

The inverse function is f(x) = (x + 7)/2

Step-by-step explanation:

To find the inverse of any function, start by switching the x and f(x) values.

f(x) = 2x -7

x = 2f(x) - 7

Now solve for the new f(x). The result will be your inverse function.

x = 2f(x) - 7

x + 7 = 2f(x)

(x + 7)/2 = f(x)

6 0
4 years ago
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