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trasher [3.6K]
3 years ago
6

18 = 3(3x − 6) solve for the value of X ?

Mathematics
2 answers:
Harlamova29_29 [7]3 years ago
8 0

Answer:

x=4

Step-by-step explanation:

18 = 3(3x − 6)

18=9x-18

+18     +18

36=9x

4=x

rosijanka [135]3 years ago
6 0

Answer 4

Step-by-step explanation:

add me on insta boss_man2935

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castortr0y [4]
He worked as a carpenter for 12 hrs. and as a blacksmith for 18.
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3 years ago
Help please. Solve the system of equations using substitution. Show your work in the workspace provided below.
LenKa [72]

Answer:

x=0 y=-11 (0,-11)

Step-by-step explanation:

1. take what y equals (3x-11) and plug it in for y in the second equation

Should look like this: O= 6x-2(3x-11)-22

2. Then distribute O=6x-6x+22-22

3. Then combine like terms O= 0 the 22's cancel out as well as the x's

x= 0

4. plug 0 in for x in the first equation y=3(0)-11

5. y= -11

6. x=0 y=-11 (0,-11)

6 0
3 years ago
A sample of 20 joint specimens of a particular type gave a sample mean proportional limit stress of 8.41 mpa and a sample standa
nignag [31]

For this problem, the confidence interval is the one we are looking for. Since the confidence level is not given, we assume that it is 95%.

 

The formula for the confidence interval is: mean ± t (α/2)(n-1) * s √1 + 1/n


Where:

<span>
</span>

α= 5%


α/2 = 2.5%


t 0.025, 19 = 2.093 (check t table)


n = 20


df = n – 1 = 20 – 1 = 19

So plugging in our values:


8.41 ± 2.093 * 0.77 √ 1 + 1/20


= 8.41 ± 2.093 * 0.77 (1.0247)


= 8.41 ± 2.093 * 0.789019


= 8.41 ± 1.65141676


<span>= 6.7586 < x < 10.0614</span>

3 0
3 years ago
When writing numbers in base 10, we only allow coefficients of 0 through 9. Why is that?​
Margaret [11]

Answer:

Because 0 counts as the first possible number. 0-9 gives you 10 possible numbers.

Step-by-step explanation:

7 0
3 years ago
Need help ASAP! What is this
ikadub [295]

180 - 64= 116

116 divided by 4 = 29

x=29

Have a good day:>

8 0
3 years ago
Read 2 more answers
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