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Neko [114]
3 years ago
9

A square is 4 inches. Kelsey drew a rectangle with the same area as the square. The length of Kelsey's rectangle is 8 inches. Wh

at is the perimeter,in inches, of Kelsey's rectangle?
Mathematics
1 answer:
Mekhanik [1.2K]3 years ago
5 0

Answer:

The answer is 20 inches

Step-by-step explanation:

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You are interested in estimating the the mean age of the citizens living in your community. In order to do this, you plan on con
Naddika [18.5K]

Answer:

The sample size is    n = 68

Step-by-step explanation:

From the question we are told that

    The margin of error is  E = 5 \ years

     The standard deviation is  \sigma = 22

From the question we are told the confidence level is  94% , hence the level of significance is    

      \alpha = (100 - 94 ) \%

=>   \alpha = 0.06

Generally from the normal distribution table the critical value  of  \frac{\alpha }{2} is  

   Z_{\frac{\alpha }{2} } =  1.881

Generally the sample size is mathematically represented as  

   n = [\frac{Z_{\frac{\alpha }{2} } *  \sigma }{E} ] ^2

=>  n = [\frac{1.881 } *  22 }{5} ] ^2

=>  n = 68

8 0
3 years ago
Have you got your answer?
irakobra [83]
Got my answer of what....
3 0
3 years ago
Two puppies eat 2 cans of dog food in 2 days. How many cans of dog food can 8 puppies eat in 8 days? Note: All puppies eat at th
Dmitry [639]

Answer:

64 cans

Step-by-step explanation:

If two puppies eat 2 cans in two days then you can imagine one puppy eats one and the other puppy eats the other. so if 8 puppies eat in 8 days you would want to do 8 * 8 = 64 cans

6 0
3 years ago
Can someone please tell me the answers to the last two questions please
Sergeu [11.5K]
Are you supposed to estimate or get an exact answer? If you're estimating you can see if the number is close to any perfect squares. In this case 63 is very close to 64, and 48 is very close to 49. The answers can then be estimated to be approximately 8 and 7, respectively.
6 0
4 years ago
Read 2 more answers
"Express as a mixed numeral: 39/8" is a problem found in a fifth-grade arithmetic textbook. This problem is BEST solved through:
Scilla [17]

Answer:

  c.  an algorithm

Step-by-step explanation:

Most math problems are best solved using an algorithm. Certainly, converting numbers from one form to another is easily done that way.

_____

The integer part is the whole-number quotient of the division. The fractional part is the remainder divided by the denominator:

  39/8 = 32/8 + 7/8 = 4 7/8

5 0
3 years ago
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