Oh, this is really easy!
Okay so the formula for the pythagorean theorem is a²+b²=c<span>²
So it doesnt really matter whats a or b
So take 21</span>²+15²=c<span>²
That ends up being 441+225=c</span><span>²
so next take 441+225 and that equals 666 then you have to find the square root so the square root of 666 is 25.81
S the answer is 25.81 </span>
Answer:
D (9)
Step-by-step explanation:
2 was one unit apart from 3 and the from the 6 polygon with the 2 is 3 times the 2 and since it is 3 times 2 variable has to be 3 times 3 which is 9 (D).
Answer:
x = -6
Step-by-step explanation:
Step 1: Write out equation
5x + (-2) = 6x + 4
Step 2: Simplify
5x - 2 = 6x + 4
Step 3: Subtract 5x on both sides
-2 = x + 4
Step 4: Subtract 4 on both sides
-6 = x
Step 5: Rewrite
x = -6
