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3 years ago

Find the value of X

Mathematics

1 answer:

Murljashka [212]3 years ago

8 0

Answer:

x=8

Step-by-step explanation:

I am pretty sure that x equals 8 because as you can see, it wouldn't make any sense if the answer of x were to equal 7. 15-7=8 which contributes onto making the most sense!

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Is the centre of a circle always equal distance from all points on the circumference? and why

AleksandrR [38]

Answer:

Yes, the center of a circle is always and always equidistant from all the points on circumference because that is because what a circle is called. The distance from the center of the circle to the circumference is called the radius and it is constant for any particular circle.

7 0

3 years ago

A recipe asks for 2 1/3 cup of flour. How many cups of flour are needed for 3 1/2 recipes? A. 5 5/6 cups B. 6 1/6 cups C. 8 1/6

MariettaO [177]

multiply 2 1/3 x 3 1/2

2 1/3 = 7/3

3 1/2 = 7/2

7/3 * 7/2 = 49/6 = 8 1/6

Answer is C

7 0

4 years ago

PLS HELP I WILL GIVE BRAINLIEST!!!!!!!

snow_lady [41]

Answer:

yes he is because they both eat half of there pizza.

7 0

3 years ago

Find the range of each set of data.

masha68 [24]

Answer:

set 1 =11 set 2 =208 Set 2 has the wider spread since the range is bigger

Step-by-step explanation:

range- find the largest number and subtract the smallest number from it

Set 1: 12-1 =11

Set 2: 230-22 =208

6 0

3 years ago

In order to estimate the mean amount of time computer users spend on the internet each month, how many computer users must be s

Sladkaya [172]

Answer:

The minimum sample size required is 5,499 computer users.

The major obstacle is that it is a big sample size if it is a small organization wanting to perform it.

Step-by-step explanation:

We need to calculate a sample size in order to have 95% confidence interval with 12 minutes of witdth.

So, we have that the difference between the upper limit and the lower limit is 12:

$UL-LL=12$

$(\mu+z*\sigma/\sqrt{n})-(\mu-z*\sigma/\sqrt{n})=12\\\\2z\sigma/\sqrt{n}=12\\\\\sqrt{n}=(1/6)*z\sigma\\\\n=(1/36)z^2\sigma^2$

For a 95% CI, the value of z is 1.96. The standard deviation is 227.

$n=z^2\sigma^2/36=(1.96)^2*(227)^2/36=3.8416*51,529/36=5498.72\\\\n=5499$

The minimum sample size required is 5,499 computer users.

6 0

3 years ago