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2 years ago

Solve the system of linear equations below.

1 answer:

7 0

The answer is A

Multiply the 2nd equation by -2
-2x -12y = -8
Then add it to the 1st equation
-9y = -6
y = 2/3
By substituting in the 1st equation
2x + 3(2/3) = 2
2x = 0
x=0

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You decide to work out your weekly pay by using the following formula: Weekly pay = dhr. d is number of days worked, h is hours

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5*8*6.88= 275.2 that week

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3 years ago

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Complete the chart to find the mean, variance, and standard deviation. Remember to use commas and round numbers to the nearest t

vitfil [10]

Answer: The mean of the data is 433.75, variance of the data is 99667.19 and the standard deviation of the data is 315.7011.

Explanation:

The given data is 900, 35, 500 and 300.

The number of observation is 4.

Formula of mean is,

$\text{Mean}=\frac{\text{Sum of observations}}{\text{Number of observations}}$

$\bar{X}=\frac{900+35+50+300}{4} =433.75$

The formula of variance is given below,

$\sigma^2=\frac{1}{n}\sum{(X-\bar{X})^2}$

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The variance of the data is 99667.19

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The standard deviation of the data is 315.7011.

The other information or values of given chart is shown in the attached table.

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2 years ago

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Annie buys a picnic table priced at $407. If the sales tax is 6%, what will be the total cost including tax?

Oksi-84 [34.3K]

Answer:

-$407

-tax:6%

407 times 6 divided by 100

413/100

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2 years ago

If x+1/x= 3 then x-1/x = ?

Alekssandra [29.7K]

Answer:

If x+1/x= 3 Then the answer for this equation (x-1/x=? ) will be...

Step-by-step explanation:

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2 years ago

Help me please help pleaseeeeeeeeeeeee

LenaWriter [7]

Answer:

(8,3)

Step-by-step explanation:

Point c is seven units away from the line x = 1

So we move seven units to the right of the line x = 1

the x value = 8

y value = 3

Coordinates = (8,3)

If my answer is incorrect, pls correct me!

If you like my answer and explanation, mark me as brainliest!

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2 years ago