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tiny-mole [99]
3 years ago
13

Solve the system of linear equations by elimination

Mathematics
2 answers:
babunello [35]3 years ago
6 0

Answer:

x=5

y=-1

Step-by-step explanation:

JulijaS [17]3 years ago
5 0
  x3[x+4y=1]
-
3x+5y=10

-1y=-9

x-1 [-1y=-9]

y=9
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In order to estimate the average time spent on the computer terminals per student at a local university, data were collected fro
VladimirAG [237]

Answer:

Margin of error  for a 95% of confidence intervals is 0.261

Step-by-step explanation:

<u>Step1:-</u>

 Sample n = 81 business students over a one-week period.

 Given the population standard deviation is 1.2 hours

 Confidence level of significance = 0.95

 Zₐ = 1.96

Margin of error (M.E) = \frac{Z_{\alpha  }S.D }{\sqrt{n} }

Given n=81 , σ =1.2 and  Zₐ = 1.96

<u>Step2:-</u>

<u />Margin of error (M.E) = \frac{Z_{\alpha  }S.D }{\sqrt{n} }<u />

<u />Margin of error (M.E) = \frac{1.96(1.2) }{\sqrt{81} }<u />

On calculating , we get

Margin of error = 0.261

<u>Conclusion:-</u>

Margin of error  for a 95% of confidence intervals is 0.261

<u />

4 0
3 years ago
9 — 3x = у<br> 3х – у = -2
Phoenix [80]

Answer:

This could be wrong, but i still wanted to help you.

Step-by-step explanation:

9-3x=y

+9      +9

3x=y

÷3   ÷3

x=y/3

Im sorry if this is wrong

6 0
3 years ago
HELP PLSS QUICKLY!!!!
tigry1 [53]
3 cans!!!

5x6= 30 (divided by 2= 15)
5x6=30 (divided by 2 = 15)
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180+30= 210

3 cans!!
4 0
2 years ago
Who ever answers this first gets brainlist<br><br> What is 6^8
kumpel [21]

Answer:

1679616

Step-by-step explanation:

7 0
3 years ago
Read 2 more answers
The sum of ten and the quotient of a number 2 and 6.
elixir [45]

Answer:

10+(n/2)=6

Step-by-step explanation:

Let the number be n

Quotient of n and 2 is (n/2)

Sum of this and 10 is

10+(n/2)=6

8 0
2 years ago
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