Answer:

Step-by-step explanation:
you can use hypotenuse formula
45-45-90 isosceles right triangle
so, 45= x
x² + x² = 24²
2x² = 24²
x²= 24.12
x= 
or :
you can use this rule: if you see a 45 45 90 isosceles right triagngle (you can look picture) 45=a cm and 90 = 
cm
so ;

a= 
hope this helps ^-^
A. True, a mode would not exist and be considered irrelevant.
Answer:
13/2=X or 6.5=X
Step-by-step explanation:
first you add 5 and 3 then you get 8
second you subtract the 8 you just got from the one in ( ) and you get 13=2x
Third you divide 13 and 2 and when you do that you get 6.5=X but if you not supposed to do it in a decimal form then is 13/2=X
as it is a markup, you multiple the cost by 1.12 (the 1 shows that the cost is increasing). the new cost is 8.9488 or $89.95 if you round.