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# Y=2x-4 Y=x-1 How do you solve this system of equations?

Solve each system of equations y=2x-4 y=x-1 how do u solve this? can I have it step by step?

# Physics Help

A heat pump is used to keep a house warm at 22 degrees Celsius.   (a) How much work is required of the pump to deliver 2900 J of heat into the house if the outdoor temperature is 0 degrees...

# what is the point-slope

what is the point-slope for (0,5) and (-1,-5)

8/1-x^2+5/x+1= 4/x-1

# Earth Science c/o crayfish

there are over 400 species of crayfish in North America.  One species, the Virile crayfish has slowly expanded each coast to the waters of Montana.  there it encounters the Calico...

# Which of the following?

Which of the following is the sum of the series pi^n/e^(2n) from n=0 to infinity?    a) e/(e-pi) b) pi/(pi-e) c) pi/(pi-e^2) d) e^2/(e^2-pi) e) The series diverges...

# Statistics Question I can't get the correct answer

The time until maturity of a certain variety of tomato plant normally distributed with mean µ and standard deviation σ = 2.4 days.  I select a simple random sample of four plants of this variety...

# Statistics Question

If a specimen is weighed 8 times on a scale.  σ = 0.001.  The average weight is 4.1602 grams.  A 99% confidence interval for the true weight of this specimen would be?

# Statistic question?

If we have an SRS of 1600 students and the sample mean = 148.  Compare with an SRS of 900 students with the margin of error for a 95% confidence interval of µ is ?  the answer should be...

# what is the operation for combining like terms

i dont understand is it just one or more operations

# is there any free statistics programs that complete the calculations for you?

I can identify the the correct values for the formulas but sometimes miscalculate the answers.  Is there any online websites that you can click on the corresponding formula and fill in the values...

# the third-degree polynomial has four intercept, the function only crosses the x-axis three times.

need help for a question in home work

# Which term of the expansion contains x^10

Which term of the expansion of (x2+2)8 contains x10? the term number that contains x10 is?

# what is 3 equivalent fractions for 36/72

I need to know what are 3 equivalent fractions for 36 / 72 like right away please answer Soon!

If the side e of a square is increased by 1%, then the area is increased approximately    a) 0.02e b) 0.02e^2 c) 0.01e^2 d) 1% e) 0.01e    Answer:...