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Dimas [21]
2 years ago
12

Solve for c........:

Mathematics
1 answer:
boyakko [2]2 years ago
8 0
C= -18
Hope this helps!
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What is the answer for 7÷ 4/5
Strike441 [17]

Answer:

7 ÷ 4/5 is 8.75 as a decimal or 8 3/4 as a fraction

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2 years ago
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The steps below show the incomplete solution to find the value of x for the equation
mafiozo [28]
Step 1: 6x - 2x - 5 = -6 + 21 
Step 2: 6x - 2x - 5 = 15 
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The next step would be to add 5 to both sides of the equation. 
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Step 4: 4x = 20 
 
So after the next step you would have 4x = 20 

Hope this helps! :) 

    
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3 years ago
Write an expression equivalent to `b+b+b+b+b` that is a product of a coefficient and a variable.
mestny [16]

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Step-by-step explanation:

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Find the exact solution of x 3x^2+7=28
chubhunter [2.5K]

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6 0
3 years ago
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In a survey sample of 83 respondents, the mean number of hours worked per week is 39.04, with a standard deviation of 11.51. Cal
soldier1979 [14.2K]

Given that,

Sample size= 83

Mean number= 39.04

Standard deviation= 11.51

We know the critical t-value for  95% confidence interval which is equal to 1.989.

We also know the formula for confidence interval,

CI=( mean number - critical t-value*standard deviation/(sample size)^(1/2), mean number + critical t-value*standard deviation/(sample size)^(1/2))

So, we have

CI= (39.04 - 1.989*11.51/83^(1/2), 39.04 + 1.989*11.51/83^(1/2)

CI= (39.04 - 2.513,39.04 + 2.513)

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Therefore, 95% confidence interval for these data is (36.527,41.553), and this result interpret that the true value for this survey sample lie in the interval (36.527,41.553).

8 0
3 years ago
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