Answer:
the given equation is y=4/7x
reciprocating both sides you get y/x =7/4
now x and y are directly porportional to each other so
x=ky where k is the constant
or x/y=k ......................(2)
equating 1 and 2
k=7/4
Step-by-step explanation:
The row echelon form of the matrix is presented as follows;
<h3>What is the row echelon form of a matrix?</h3>
The row echelon form of a matrix has the rows consisting entirely of zeros at the bottom, and the first entry of a row that is not entirely zero is a one.
The given matrix is presented as follows;
The conditions of a matrix in the row echelon form are as follows;
- There are row having nonzero entries above the zero rows.
- The first nonzero entry in a nonzero row is a one.
- The location of the leading one in a nonzero row is to the left of the leading one in the next lower rows.
Dividing Row 1 by -3 gives:
Multiplying Row 1 by 2 and subtracting the result from Row 2 gives;
Subtracting Row 1 from Row 3 gives;
Adding Row 2 to Row 3 gives;
Dividing Row 2 by -2, and Row 3 by 18 gives;
The above matrix is in the row echelon form
Learn more about the row echelon form here:
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If it’s all 3 being chosen it’s 1/7 X 1/7 X 1/7 which is .002915 which would be a .29%
Laura has been running at a rate of 12 miles per week.
Step-by-step explanation:
Given,
Time period = 3 weeks
Distance ran by Laura in 3 weeks = 36 miles
To find distance covered in one week, we will divide the total distance by number of weeks.
Distance covered in one week =
Distance covered in one week = 12 miles
Laura has been running at a rate of 12 miles per week.
Keywords: division, unit rate
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Inverse operations is liek adding the negatie of a number to cancle it out or multiplying a fractin by its inverse to cancel it
so
19=(h/3)-8
add 8 to both sides
cancels the 8
19+8=(h/3)+8-8
27=(h/3)+0
27=h/3
times 3/1 both sides
27*3=(3h)/3
81=h(3/3)
81=h*1
81=h