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Debora [2.8K]
2 years ago
13

Ignore “c”. i need help with 5 and 6. i suck at this lol. brainliest for whoever gives best answer

Mathematics
1 answer:
34kurt2 years ago
6 0

Answer:

5 = 1/3

6 A = 24%

6 C = 26%

Step-by-step explanation:

sorry if its wrong i didn't have a lot of time

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12 plus 7 divided by 2 help please
polet [3.4K]

Answer:

15.5

Step-by-step explanation:

4 0
3 years ago
Read 2 more answers
I NEED THIS ASAP WHOEVER GETS FIRST GET BRAINLIEST
Rina8888 [55]

Answer:

It is A

Step-by-step explanation:

3 0
2 years ago
You by x packs of pencils, twice as many packs of erasers, and three times as many rolls of tape. Write an expression in the sim
ra1l [238]
Answer- since you are buying x packs of pencils, 2x packs of erasers, and 3x rolls of tape, you would be buying a total of 6x items.
7 0
2 years ago
(Small sample confidence intervals for a population mean) suppose you are taking a sampling of 15 measurements. you find that x=
Luda [366]

Answer:

The 99% confidence interval is  71.67 < \mu < 78.33

Step-by-step explanation:

From the question we are told that

     The sample  size  is  n  =  15

      The  sample  mean is  \= x  =  75

        The  standard deviation is  s =  5

 Given that confidence is  99%  then the level of significance is mathematically represented as

              \alpha  =  100 -  99

             \alpha  =  1\%

             \alpha  =  0.01

Next we obtain the critical values of  \frac{ \alpha }{2} from the normal distribution table

   The  value is

                  Z_{\frac{ \alpha }{2} } = 2.58

Generally the margin for error is mathematically represented as

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

=>         E =  2.58  *  \frac{ 5}{ \sqrt{15} }

=>         E =  3.3307

   The  99% confidence interval is mathematically represented as

             \= x  -E  <  \mu  <  \= x  +E

=>          75 -  3.3307 <  \mu

=>          71.67 < \mu < 78.33

3 0
3 years ago
X + 5y = 28<br> - x - 2y = -13
bazaltina [42]

Answer:

x=3

y=5

Step-by-step explanation:

x+5y=28 (i)

-x-2y=-13. (ii)

add equation 2 from equation 1

x+5y=28

-x-2y=-13

3y=15

y=5

put the value of y in equation 1

x+5y=28

x+5*5=28

x+25=28

x=28-25

x=3

8 0
3 years ago
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