Step-by-step explanation:
4x^2 - 20 = 5
4x^2 -25 = 0
4x^2 = 25
2x = 5, or -5
x = 5/2 , or -5/2
Answer:
c
Step-by-step explanation:
Answer:
$3.50
Step-by-step explanation:
Divide the price of 6 books ($21) by the number of books bought (6)
$21 divided by 6 = $3.50
So the price of 1 book is $3.50
Hope this helps :)
Answer: The following statement is true about indexes and scales: <em><u>They rank-order the units of analysis in terms of specific variables.</u></em>
<u><em>Indexes</em></u> provides with a way to make a complex measure that iterate consequence for multiple rank-ordered related questions or statements.
<u><em>Scale</em></u> is a type of complex measurement that is combined of several items that have a empirical structure among them.
Answer:
Step-by-step explanation:
Because the leftmost triangle is a 45-45-90 isosceles right triangle, 
The rightmost triangle is a 30-60-90 triangle, and the side lengths are in the proportion 
from shortest to longest. Therefore, 
