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sweet [91]
2 years ago
9

Show work please thanks

Mathematics
1 answer:
Tju [1.3M]2 years ago
3 0
Be more specific on the first one
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5.5 cm<br> What is the circumference of this circle?<br> cm
FromTheMoon [43]

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23.76

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Find the area of the parallelogram shown.
ziro4ka [17]

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40 Yd^2

Step-by-step explanation:

Take out the 7 from that problem and multiply the regular shape so whats 8 times 5?

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Does (-15, -691) make the equation y = -51x - 74 true?<br><br><br>​
dimulka [17.4K]

Well, we can input both variables to check and see if the numbers hold.

-691 = -51(-15) - 74

-691 = 765-64

-691 = 701

(-15, -691) does not make the equation true.

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3 years ago
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Alex bought 8 postcards in 4 days. At this rate, how many postcards would he have after 10 days?
yuradex [85]

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20

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8 0
3 years ago
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HELP ME NOW PLEASE NOW ADGAFDKD;LHJ!!!!!!<br><br><br> PLEASE AND THANK YOU :)))))
Eddi Din [679]

I got D.

There's a few ways to solve it; I prefer using tables, but there are functions on a TI-84 that'll do it for you too. The logic here is, you have a standard normal distribution which means right away, the mean is 0 and the standard deviation is 1. This means you can use a Z table that helps you calculate the area beneath a normal curve for a range of values. Here, your two Z scores are -1.21 and .84. You might notice that this table doesn't account for negative values, but the cool thing about a normal distribution is that we can assume symmetry, so you can just look for 1.21 and call it good. The actual calculation here is:

1 - Z-score of 1.21 - Z-score .84 ... use the table or calculator

1 - .1131 - .2005 = .6864

Because this table calculates areas to the RIGHT of the mean, you have to play around with it a little to get the bit in the middle that your graph asks for. You subtract from 1 to make sure you're getting the area in the middle and not the area of the tails in this problem.

7 0
3 years ago
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