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3 years ago

What is margin of error??

Mathematics

1 answer:

Tems11 [23]3 years ago

8 0

Answer:

The margin of error for a sample size of 250 is 6

Step-by-step explanation:

The margin of error is given as

1/square root of the sample size

Thus, margin of error for a sapless size of 250 is

1/√250

= 1/15. 811

= 6

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What is the lcm for 7,14,16

MAXImum [283]

Answer:

112

Step-by-step explanation:

To find the least common multiple, we break the numbers down into prime factors

7 = 7

14 = 7*2

16 = 2*8 = 2*4*2 = 2*2*2*2

Then we take the largest number of times it appears in all the numbers

2 appears 4 times so we take take four 2's

7 appears 1 so we take one 7

LCM = 2*2*2*2*7

LCM = 112

7 0

2 years ago

-7 x (4+8) = ?? Please a aswer?

Colt1911 [192]

The answer would be -84.

Here are the steps I did.

1. Simplify 4 + 8 to 12 ( -7 * 12 )

2. Now lastly simplify and u get -84.

5 0

3 years ago

Read 2 more answers

The veloctiy of sound in air is given by the equation v=20 times the square root of 273+t where v is the velocity in meters per

Nikitich [7]

So we just need to plug in our values and solve
$v = 20 \sqrt{273 + t}$
we are given v is 369 so we have
$369 = 20 \sqrt{273 + x}$
now we solve for x.
divide both sides by 20
square both sides
subtract 273 from both sides
$369 = 20 \sqrt{273 + x} \\ 18.45 = \sqrt{273 + x} \\ 340.40 = 273 + x \\ x = 67.4$
so a temp of about 67 degrees C

5 0

2 years ago

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NEED HELP ASAP PLEASE AND THANK YOU<br> ALEGRA 1

sammy [17]

16 and 157
Accordingly

5 0

3 years ago

Read 2 more answers

Cot =(2x/5 - pi /7) tìm tập xác định

pogonyaev

Cot”-$’kdkkskixxjcjcjdi’$gZ#

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2 years ago