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3 years ago

6

2 7/10 + 5/8 what is the answer

2 answers:

yarga [219]3 years ago

6 0

Well you first must get the fractions to have the same denominator. So you multiply 5/8 by 10 ( both top and bottom ) to get 50/80, and you multiply 7/10 by 8 to get 56/80. You ignore the whole 2 for now for it is not a fraction, and you add 56 plus 50 to get 106 and put it back over 80. 106/80, now since 106/80 is over 1 you can take 106 - 80 and get 26. 1 and 26/80 is what the two fractions add up to. Add the whole two to 1 and get 3 and 26/80 which can be simplified to 3 and 13/40.

FrozenT [24]3 years ago

4 0

3 13/40 is the answer or if you want it in decimal , it will be 3.325

I hope that's help.

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Company A is trying to sell its website to Company B. As part of the sale, Company A claims that the average user of their site

Ymorist [56]

Answer:

$L = 3.975$

Step-by-step explanation:

Given

See comment for data

Required

The lower limit 94% confidence interval

First, calculate the mean

$\bar x =\frac{\sum x}{n}$

$\bar x =\frac{0.9+10+0.9+8.7+4.8+2.6+1+13.3+9.5+8.9+8.9+4.6}{12}$

$\bar x =\frac{74.1}{12}$

$\bar x =6.175$

Next, calculate the standard deviation using:

$\sigma = \sqrt{\frac{\sum(x - \bar x)^2}{n}}$

So, we have:

$\sigma = \sqrt{\frac{(0.9 - 6.175)^2 +(10- 6.175)^2 +.................+(8.9- 6.175)^2 +(4.6- 6.175)^2}{12}}$

$\sigma = \sqrt{\frac{197.2625}{12}}$

$\sigma = \sqrt{16.4385416667}$

$\sigma = 4.054$

For 94% interval, the z score is

$z = 1.88$

So, the margin of error (E) is:

$E = z * \frac{\sigma}{\sqrt n}$

$E = 1.88 * \frac{4.054}{\sqrt {12}}$

$E = 1.88 * \frac{4.054}{3.464}$

$E = 2.200$

The confidence interval of the true mean is:

$CI = (\bar x \± E)$

The lower limit (L) is:

$L = \bar x -E$

$L = 6.175 -2.200$

$L = 3.975$

and the upper limit (U) is

$U = \bar x + E$

$U = 6.175 + 2.200$

$U = 8.375$

5 0

3 years ago

. Six times a number diminished by 7<br>comes out to be 41. The number is

serious [3.7K]

Answer:

x = 8

Step-by-step explanation:

let x = a number

6x - 7 = 41

<u> +7 +7</u>

6x = 48

divide by 6

x = 8

<em><u>Hope this helped! Have a nice rest of ur day! Plz mark as brainliest!!!</u></em>

<em><u>-Lil G</u></em>

5 0

3 years ago

Can someone please help me?

timama [110]

I pretty sure your answer is yes but correct me if i’m wrong

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Free_Kalibri [48]

The answer is 21 or 63/3

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3 years ago

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Marat540 [252]

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3 years ago