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Elis [28]
3 years ago
7

The sum of x and 10 is less than -6​

Mathematics
1 answer:
goldenfox [79]3 years ago
6 0
Try breaking these into sections.

Twice: 2 times

The sum of: add

A number: choose a variable, like x

---Thus "the sum of a number and 4" becomes "add x and 4" which, mathematically, is "x+4"

-----Continuing to put it all together, "Twice the sum of a number and four" becomes "2 times (x+4)" which, mathematically, is "2(x+4)"

Is: equals

-------"Twice the sum of a number and four is" becomes "2(x+4)="

23 less than: subtract 23. This one tends to trick people; "23 less than" will become "__ - 23", NOT "23 - __"

three times the number: 3 times x

---"23 less than three times the number" becomes "subtract 23 from 3 times x" which, mathematically, is "3x-23"

-------So the final phrase: 2(x+4)=3x-23"
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When Gabriella runs the 400 meter dash, her finishing times are normally distributed with a mean of 79 seconds and a standard de
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(78, 80)

Step-by-step explanation:

Given a normal distribution :

Mean = 79 seconds

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Using the empirical rule :

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4 0
2 years ago
Which steps could be used to solve this story problem?
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R-e-d

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Read 2 more answers
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