19^2 + x^2 = 21^2
19^2 = 361
21^2= 441
361 + x^2 = 441
x^2 = 441-361 = 80
x = sqrt(80) = 8.944 round to nearest tenth = 8.9
88 feet
<span>√</span>484=22
Perimeter is l+l+l+l
22+22+22+22=88
Answer:
You will pay $332.50 for a item with original price of $475 when discounted 30%
meaning the discount is $142.50
Step-by-step explanation:
if you buy an item at $475 with 30% discount, you will pay 475 - 142.5 = 332.5 dollars.
please give brainliest and thanks if possible
Answer:
See explaination
Step-by-step explanation:
B. The equality relation on the real numbers is an equivalence relation.
This statement is true
C. If RR is a reflexive relation on a set S, then any two RR- related elements of S must also be R2R2 related.
This statement is true
F. The less than or equal relation on the real numbers fails to be an equivalence relation because it is reflexive and transitive but not symmetric
This statement is true
H. If RR is an equivalence relation, then R2
This statement is true
