Plug in x&y use the equation given
27x^2 - 42x + 12
3 is a common factor:-
= 3(9x^2 - 14x + 4)
That is the equivalent expression.
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:
brainly.com/question/18065083
Answer:
1. 128 pages.
2. (y - x) + 1
3. 6 pages.
4. Helps to formulate the expression for the number of pages read.
Step-by-step explanation:
1. George will read pages 385 through 512 in his karate history book. And we are asked to find the number of pages that he will read.
The required number of pages that George read will be = (512 - 385) + 1 = 128 pages.
2. If he read from page number x through page number y then the general rule of finding the number pages that he read will be = (y - x) + 1
3. If x = 500 and y = 505, then the number of pages read is = (505 - 500) + 1 = 6 pages.
Again, if x = 5 and y = 29, then again the number of pages read is = (29 - 5) + 1 = 25 pages.
4. The rule just formulates the expression for the number of pages read and it eases the calculation for the number of pages read. (Answer)
The answer is B) 7, because every student has to have the same amount you just have to find the greatest common factor.<span />
