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3 years ago

Evaluate the expression. 9!/3! A. 3 B. 6 C. 60,480 D. 362,874

Mathematics

2 answers:

myrzilka [38]3 years ago

3 0

Answer:

The answer it the C.60480

Lerok [7]3 years ago

3 0

Your answer is c :))

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A submarine is exploring the Pacific Ocean. At 502.5 feet below sea level, the water temperature is 6 1/4 °F. The submarine dive

Whitepunk [10]

Step-by-step explanation:

At the elevation 617.5 feet below the sea level temperature of the water was °F

Step-by-step explanation:

At 502.5 feet below the sea level temperature of the water is °F

When submarine dives down 115 feet deeper, water temperature drops by °F

Elevation after the submarine dove = -502.5 - 115 = -617.5 feet

This negative sign represents the elevation below the sea level.

And the temperature will be =

= °F

Therefore, at the elevation 617.5 feet below the sea level temperature of the water was °F

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Maru [420]

If $d$ is the common difference between terms in the sequence $\{a_n\}$ , then

$a_1=-21$
$a_2=a_1+d=-21+d$
$a_3=a_2+d=-21+2d$
...
$a_n=a_{n-1}+d=\cdots=-21+(n-1)d$

You're told that $S_{16}=-288$ (the sum of the first 16 terms in the sequence, presumably). Well, we know that

$S_{16}=\displaystyle\sum_{n=1}^{16}a_n=\sum_{n=1}^{16}(-21+(n-1)d)$
$S_{16}=\displaystyle(-21-d)\sum_{n=1}^{16}1+d\sum_{n=1}^{16}n$

Recall that

$\displaystyle\sum_{n=1}^kn=\frac{k(k+1)}2$

so that we have

$-288=16(-21-d)+\dfrac{16(16+1)}2d\implies d=\dfrac25$

So we get

$\begin{cases}a_1=-21\\\\a_n=-21+\dfrac25(n-1)\end{cases}$

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3 years ago

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jeyben [28]

Answer:

The slope is 2

Step-by-step explanation:

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8/4 reduces to 2/1 which makes the slope 2

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3 years ago

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rusak2 [61]

Number of ways the second grade students can sit on the first row is 5! = 5P5
Number of ways 15 first grade students can sit in the remaining 20 seats is 20P15

Therefore, required number of ways is 5P5 * 20P15. (option B)

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Figure A is a scale image of figure B Figure A maps to figure B with a scale factor of 4/9 What is the value of x?

dimulka [17.4K]

16 divided by 4/9= 36 which is your answer

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