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liraira [26]
3 years ago
7

Solve the equation -8=-2n+2n

Mathematics
2 answers:
Oxana [17]3 years ago
7 0

Answer:

-8

Step-by-step explanation:

-2n + 2n is n

-8 = n

Dafna1 [17]3 years ago
4 0

Answer:

There is no solution to this.

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A researcher wishes to estimate the proportion of X-ray machines that malfunction. A random 275 sample of machines is taken, and
Dominik [7]

Answer:

Following are the solution to the given question:

Step-by-step explanation:

95\% Confidence Interval for both the percentage of all x-ray machines

p = the machinery's share is not working:

= \frac{228}{275}\\\\ = 0.829

\text{Margin of Error} = Z_{(\frac{\alpha}{2})} \times \sqrt{( p \times (1-p)}{n})

                         = 1.96 \times \sqrt{(0.829 \times \frac{0.171}{275})} \\\\= 1.96 \times 0.023 \\\\= 0.045

Lower 95\% Confidence interval = p - error margin = 0.829 - 0.045 = 0.784

Upper 95\% Confidence Interval = p + error margin= 0.829 + 0.045 = 0.874

So, 95\% Confidence Interval = ( 0.78 , 0.87 )

4 0
3 years ago
ON THE SAME STUDY GUIDE! PLEASE HELP
Lera25 [3.4K]

Answer:

x = 4 ; y = 8

Step-by-step explanation:

we can use a system of two equation

x+1 = y-3

y-5 = 2x-5

we can find x in the first equation

x = y -4

we can now substitute x with this value in the second equation

y-5 = 2(y-4)-5

y = 2y-8

y = 8

we can now find x

x = 8-4 = 4

verify

2(4)-5 = 3

8-5 = 3

8-3 = 5

4 + 1 = 5

3 0
3 years ago
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Ahat [919]
It's A because 8-15 is -7 but the absolute value parenthesis make it positive 7.
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4 years ago
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The volume of the well...
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Which expression below has the same value as<br> 6<br>9?​
Ksenya-84 [330]

Which expression below has the same value as

6

9?​

Answer:

answer is c no because 9 power six so, we have to write 9 number 6 times

PLZ GIVE BE BRAINLIEST ANS+THANKS :(

3 0
3 years ago
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