Answer:
-400
Step-by-step explanation:
20 + 14 + 8 + ... + (-70) =
= (-6·1+26)+(-6·2+26)+(-6·3+26)+...+(-6·16+26) =
= -6·(1+2+3+...+16)+26·16 =
= -6·16·17/2+26·16 =
= -6·8·17+26·16 =
= -816+416 =
= -400
Answer:
∠2 = 18°
Step-by-step explanation:
∠WXZ = ∠1 + ∠2 ← substitute ∠1 = 3∠2
∠WXZ = 3∠2 + ∠2, that is
72 = 4∠2 ( divide both sides by 4 )
18 = ∠2, that is
∠2 = 18°
Answer:
D
Step-by-step explanation:
7 is it because it is positive
Cory . . . . 21/60 = 0.35 = 35 percent
Krista . . . 18/45 = 0.4 = 40 percent
Paula . . . 17/50 = 0.34 = 34 percent
From this point, I'm pretty sure you can line them up.
