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The number of pages the student can read in a minute is an illustration of rates.
The time left to complete the whole book is 90 minutes
From the complete question, the student's rate is:
The number of pages is:
First, we calculate the time to read the whole book
The number of the student has read is:
Next, we calculate the time spent on the 25 pages
Convert to minutes
So, the time left is:
This gives
Convert to minutes
Hence, the time left is 90 minutes
Read more about rates at:
Answer:
1/2
-1/2
Step-by-step explanation:
we know that
If a dilation produce a contraction that means that the absolute value of the scaling factor is less than 1
If a dilation produce an enlargement that means that the absolute value of the scaling factor is greater than 1
<u><em>Verify each case</em></u>
case 1) 2
----> is a enlargement
case 2) 1/2
----> is a contraction
case 3) -2
----> is a enlargement
case 4) -1/2
----> is a contraction