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Ne4ueva [31]
3 years ago
9

I need to find x pls

Mathematics
1 answer:
Rainbow [258]3 years ago
3 0
I hope this helps you

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A bird flies 61/2 mi in 20 min.
schepotkina [342]

\frac{61/2}{20} =  \frac{x}{81/8}
multiply the 2nd fraction by 8/8 to get rid of the 8 in the denominator:
\frac{61/2}{20} = \frac{8x}{81}
simplify the 1st fraction by multiplying by 2/2:
\frac{61}{40} = \frac{8x}{81}
now, you can cross-multiply: 
61*81=40*8x
4941=320x
x=\frac{4941}{320} or 15 \frac{141}{320}

8 0
4 years ago
Order the fraction to least to greatest 7\9 13\18 5\6 2\3
Olegator [25]
First, you need to have a common denominator for all of them, in this case, they can all go in 18 so that will be the common denominator. 

\frac{7}{9} x \frac{2}{2} = \frac{14}{18}
\frac{5}{6} x \frac{3}{3} =  \frac{15}{18}
\frac{2}{3} x \frac{6}{6} = \frac{12}{18}
\frac{13}{18}

Now you can tell which ones are the biggest or smallest. So from least to greatest you would have this.

\frac{2}{3} , \frac{13}{18} , \frac{7}{9} , \frac{5}{6}

7 0
3 years ago
Is the z score corresponding to a number or score below the mean always negative?
rusak2 [61]

Answer:

Yes

Step-by-step explanation:

The z-score corresponding to a number or score can be calculated using:

z =  \frac{x -  \mu}{ \sigma}

Where x stands for the individual scores, and

\mu

stands for the mean.

Since

x \:  \:  <  \:  \mu

for all numbers or scores below the mean, the difference will always be negative these values below the mean.

This will always result in a negative z-score for all numbers below the mean.

7 0
3 years ago
You roll 2 dice what is the probability that the sum of the dice is greater than 8 and that one die shows a six
MAXImum [283]
It'll be rare to do it
7 0
3 years ago
Find the surface area of a square pyramid base 11cm slant height 14cm
vovangra [49]
1111111671t141wq154117878899
7 0
4 years ago
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