<img src="https://tex.z-dn.net/?f=%287x%5E%7B2%7D%29%282x%5E%7B4%7D%29%28-5x%29" id="TexFormula1" title="(7x^{2})(2x^{4})(-5x)"

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spayn [35]

2 years ago

alt="(7x^{2})(2x^{4})(-5x)" align="absmiddle" class="latex-formula">

plz help

Mathematics

1 answer:

ivolga24 [154]2 years ago

6 0

Answer:

$-70x^{7}$

Step-by-step explanation:

$(7x^{2})(2x^{4})(-5x)$

$= 7(2)(-5)(x^{2})(x^{4})(x)$

$= -70(x^{7})$

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A rectangular auditorium seats 1344 people. The number of seats in each rows exceeds the number of rows by 20. Find the number o

Tasya [4]

Let the number of rows be x

rows = x
seats in each row = x + 20

total seats = 1344
x (x + 20) = 1344
x^2 + 20x - 1344 = 0
(x + 48)(x - 28) = 0
x = -48 (rejected, answer cannot be negative) or x = 28

Therefore,
x = 28
x + 20 = 48

Check:
Row = 28
Numbers of seat per row = 28 + 20 = 48
28 x 48 = 1344 (Correct)

Ans:There are 48 seats per row

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3 years ago

Eric plays piano and guitar. He practiced on both instruments for a total of 8 hours this week. He practiced the piano for 3/4 o

Ivan

If you would like to know how many hours did Eric practice the piano this week, you can calculate this using the following steps:

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The correct result would be 6 hours.

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3 years ago

What is the sum of -6 4/5 and 6 4/5 ?

daser333 [38]

Answer:

Step-by-step explanation:

-6 4/5 + 6 4/5 equals zero.

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3 years ago

Read 2 more answers

Percentage grade averages were taken across all disciplines at a particular university, and the mean average was found to be 83.

Georgia [21]

Correct Ans:
Option A. 0.0100

Solution:
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First step will be to convert the given score into z score for given mean, standard deviation and sample size and then use that z score to find the said probability. So converting the value to z score:

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So, 90 converted to z score for given data is 2.326. Now using the z-table we are to find the probability of z score to be greater than 2.326. The probability comes out to be 0.01.

Therefore, there is a 0.01 probability of the class average to be greater than 90 for the 10 classes.

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4 years ago

What is the truncation error for S4?

solong [7]

Answer:

Its B

Step-by-step explanation:

I calculated it using the formula and got B

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3 years ago