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ankoles [38]
3 years ago
15

Gena wants to estimate the quotient of –21.87 divided by 4.79. Which expression shows the best expression to estimate the quotie

nt using front-end estimation?
A -21 ÷ 4
B -21 ÷ 5
C -20 ÷ 4
D -20 ÷ 5
Mathematics
2 answers:
bezimeni [28]3 years ago
6 0
I think is Gonna be C
ivolga24 [154]3 years ago
5 0
B...............................
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13s - r^2; if r = 9 and s = 6
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Answer:

27

Step-by-step explanation:

r = 9

s = 6

r^2

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= 9 x 9

= 81

13s

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13s - r^2

= 108 - 81

= 27

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Given the function f(x) = 3x + 1 what is f(-2)?
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Answer:

-5

Step-by-step explanation:

f(-2) means that -2 is going to be our input in this function.

To solve this, simply substitute -2 for x in the expression given.

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3(-2)+1 = -6+1 = -5

Hope this helped!

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givi [52]
<h2>Hello!</h2>

The answer is: There are a total of 16 skits in the video.

<h2>Why?</h2>

From the statement, we know that the total length of the video is 101 minutes and it contains a 5-minute introduction, the rest of the minutes are short skits (which are 6 minutes long each one).

So, we need to write the following equations:

First equation:

TotalDuration=Introduction+n*Skit

Second equation:

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Where,

TotalDuration=101Minutes\\Introduction=5Minutes\\n=NumberOfSkits\\Skit=6Minutes

So, replacing and substituting the second equation into the first equation we have:

101Minutes=5Minutes+n*6Minutes\\n*6Minutes=101Minutes-5Minutes\\n*6Minutes=96Minutes\\n=\frac{96Minutes}{6Minutes}=16

So, there are a total of 16 skits in the video.

Let's prove it substituting "n" into the first equation:

101Minutes=5Minutes+16*6minutes\\101Minutes=5Minutes+96Minutes\\101Minutes=101Minutes

Have a nice day!

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