Answer:5
Step-by-step explanation:
Simplifying
8x + -20 = 3x + 5
Reorder the terms:
-20 + 8x = 3x + 5
Reorder the terms:
-20 + 8x = 5 + 3x
Solving
-20 + 8x = 5 + 3x
Solving for variable 'x'.
Move all terms containing x to the left, all other terms to the right.
Add '-3x' to each side of the equation.
-20 + 8x + -3x = 5 + 3x + -3x
Combine like terms: 8x + -3x = 5x
-20 + 5x = 5 + 3x + -3x
Combine like terms: 3x + -3x = 0
-20 + 5x = 5 + 0
-20 + 5x = 5
Add '20' to each side of the equation.
-20 + 20 + 5x = 5 + 20
Combine like terms: -20 + 20 = 0
0 + 5x = 5 + 20
5x = 5 + 20
Combine like terms: 5 + 20 = 25
5x = 25
Divide each side by '5'.
x = 5
Simplifying
x = 5
Answer:
Step-by-step explanation:
Given that
sample size n = 55: x bar = 654.16 and s = sample sd = 162.34
Std error = 162.34/sqrt 55 = 21.889
For 95% CI we can use t critical value as population std dev is not known.
df = 54
t critical = 2.004
Margin of error = 2.004 *21.889 = 43.866
Confidence interval lower bound = 654.16-43.866 =610.294
Upper bound = 654.16+43.866=698.026
Confidence interval rounded off at 95% = (610.29, 698.23)
Answer:
Its B
Step-by-step explanation:
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.25 Is the answer If that helps you enough
