Answer:
Answer is C.
Step-by-step explanation:
I hope it's helpful!
Answer:65
Step-by-step explanation:
I'm not sure what you mean by "expression form," but if its simpliest form, you would simply do 20+5*9, and 5*9 is 45. 45+20 is 65
Answer:
C)
Step-by-step explanation:
Since theyre the same measure all you would need is the missing variable.
Answer:
19.77 cm
Step-by-step explanation:
We'll use the pythagorean theorem
a^2 + b^2 = c^2
b^2 = c^2 - a^2
x^2 = 20^2 - 9^2
x^2 = 400 - 81
x^2 = 391
x = 19.77