Answer:
1/4
Step-by-step explanation:
gradient formula= Δy/Δx
80-120/20-30=1/4
"Percent" - For details read the explanation given below.
percentages compare numbers in the numerator to 100 and the ratio that compares a number to 100 is logically called percent.
Arranging of books is an illustration of permutation and combination
There are 24 different possible arrangements she can make
<h3>How to calculate the number of arrangement</h3>
The number of books is given as:
n = 4
Take the factorial of both sides
n! = 4!
Evaluate
n! = 4 * 3 * 2 * 1
n! = 24
Hence, there are 24 different possible arrangements she can make
Read more about permutation and combination at:
brainly.com/question/1216161
Answer:
1.5
Step-by-step explanation:
