Evaluate the expression 10−5a+(18−b), where a=2 and b=11. Which THREE expressions will have the same value?

A
28÷(a×2)

B
20+b−(4×a)

C
49−43+(a÷a)

D
30−25+(b−9)

E
50÷a−(b+20)

How can (square root of 25) ^2 be rewritten?

5, 6, 10 question: a. determine whether the side lengths form a triangle. (explain your reasoning) b. if it is a triangle, determine whether it is a right, acute, or obtuse triangle. (show your work)

Point r divides in the ratio 1 : 5. if the coordinates of e and f are (4, 8) and (11, 4), respectively, what are the coordinates of r to two decimal places?