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3 years ago

5

Scores on a standardized test are normally distributed with a mean of 250 and a standard a deviation of 20. Approximately what p

ercent of students scored between 260 and 280? Round to the nearest percent

1 answer:

masha68 [24]3 years ago

5 0

Answer:

You can't answer this properly without more data.

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A car is 160 inches long.

sladkih [1.3K]

Answer:

Length of truck = 160 +7% of 160 = 160 +11.2 = 171.2inches

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3 years ago

Tiva earns $48 for 6 hours of babysitting. Complete each statement if Tiva keeps earning her babysitting money at this rate. CLE

lawyer [7]

8.5
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$8 \times 8.5$
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$32

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3 years ago

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Find the quotient and any excluded values.<br><br> (x + 5/x^2 + 9x + 20)/(x^2-16/x-4)

Wittaler [7]

By <span>(x + 5/x^2 + 9x + 20) you apparently meant the following:

x+5
----------------------
x^2 + 9x + 20

and by

</span><span>(x^2-16/x-4)
x^2-16
you apparently meant ---------------
x - 4

Please use additional parentheses for clarity.

Dividing,

</span> x+5 (x-4)(x+4)
---------------------- * ---------------
x^2 + 9x + 20 x-4

Now, x^2 + 9x + 20 factors into (x+4)(x+5), so what we have now is

(x+5)(x+4)
------------------------- = 1 This is true for all x, so there are no exclusions.
(x+4)(x+5)

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3 years ago

3 numbers that are greater than 12,000 but less than 13,000

AleksandrR [38]

12001, 12002, 12003 so lol

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3 years ago

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Someone please answer! 8th grade math question.

yulyashka [42]

Answer: there is 3 terms

Step-by-step explanation: each term is separated by a sybol (addition, substation, multiplication, etc).

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3 years ago