Answer:
12
Step-by-step explanation:
Plug the given values into the equation to solve.
a² - b²
(4)² - (-2)²
16 - 4
12
59 is the answer all you do is add 14 to 45 and you'll get t9
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:
a1- 2 terms
a2- 6x, 9y
a3- 6,9
b1-2 terms
b2- 7x, 12x
b3- 7,12
c1- 3 terms
c2- 5x^2, 2y, 3
c3- 5,2,3
Step-by-step explanation:
Answer:
20.53 minutes
Step-by-step explanation:
Speed = Distance/Time = 30/7
Time = Distance / Speed
= 5280/30/7
= 1232 seconds / 60 = 20.53 minutes
Answered by Gauthmath