jill mowed lawns for 3 hours and earned $7.20 per hour.Then she washed windows for 4 hours and earned $6.75 per hour. what were
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Manny can assemble a computer in 50 minutes. That means, in a minute Manny does 
job.
Lucy can assemble a computer in 45 minutes. That means, in a minute Lucy does
job.
If they are working together, in a minute they will do:
In a minute they will do
job
To finish the job they will do it in
minutes or about 24 minutes.
Lucy can assemble a computer in 45 minutes. That means, in a minute Lucy does
If they are working together, in a minute they will do:
In a minute they will do
To finish the job they will do it in
The second matrix represents the triangle dilated by a scale factor of 3.
Step-by-step explanation:
Step 1:
To calculate the scale factor for any dilation, we divide the coordinates after dilation by the same coordinated before dilation.
The coordinates of a vertice are represented in the column of the matrix. Since there are three vertices, there are 2 rows with 3 columns. The order of the matrices is 2 × 3.
Step 2:
If we form a matrix with the vertices (-2,0), (1,5), and (4,-8), we get
The scale factor is 3, so if we multiply the above matrix with 3 throughout, we will get the matrix that represents the vertices of the triangle after dilation.
Step 3:
The matrix that represents the triangle after dilation is given by
This is the second option.