Please help please...

Mathematics

2 answers:

Leya [2.2K]3 years ago

8 0

First one is
(2x+5)

Second one is
“All of these are correct”

Hope this helped

iogann1982 [59]3 years ago

7 0

Answer:

(2x + 5)

Step-by-step explanation:

2(x + 1) + 6x = 4(2x + 5) + 2

2x + 2 + 6x = 8x + 20 + 2

8x + 2 = 8x + 22

Because both sides are 8x it will have no solution

Second one is "all of these are correct"

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Solve for x .0.94=logx

AysviL [449]

Step-by-step explanation:

$\log_ab=c\iff a^c=b\\\\\log x=\log_{10}x\\\\\log x=0.94\iff x=10^{0.94}\\\\x\approx8.71$

4 0

4 years ago

Please help!!

Anni [7]

Data set 1 : the mean is (1+2+4+4+5+5+6+7+9+9+9+11) / 12 = 72/12 = 6

the MAD is :
1 - 6 = -5....|-5| = 5
2 - 6 = -4....|-4| = 4
4 - 6 = -2...|-2| = 2
4 - 6 = -2...|-2| = 2
5 - 6 = -1...|-1| = 1
5 - 6 = -1...|-1| = 1
6 - 6 = 0 ...| 0| = 0
7 - 6 = 1....|1| = 1
9 - 6 = 3...|3| = 3
9 - 6 = 3...|3| = 3
9 - 6 = 3...|3| = 3
11 - 6 = 5...|5| = 5

(5+4+2+2+1+1+0+1+3+3+3+5) / 12 = 30/12 = 2.5 <== the MAD

2nd data set :
the mean is (1+3+4+6+6+6+7+9+9+10+10+13) / 12 = 84/12 = 7

mad is :
1 - 7 = -6...| -6| = 6
3 - 7 = -4...|-4| = 4
4 - 7 = -3...|-3| = 3
6 - 7 = -1...|-1| = 1
6 - 7 = -1..|-1| = 1
6 - 7 = -1..|-1| = 1
7 - 7 = 0...|0| = 0
9 - 7 = 2...|2| = 2
9 - 7 = 2...|2| = 2
10 - 7 = 3..|3| = 3
10 - 7 = 3...|3| = 3
13 - 7 = 6...|6| = 6

(6+4+3+1+1+1+0+2+2+3+3+6) / 12 = 32/12 = 2.67 <== the MAD

the difference of the means is 1. This value is less then half of the mean absolute deviation of either data set. <== ur answer

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