87.5 you multiply the 7 meters by 12.5
Answer:
270.63
Step-by-step explanation:
hope you get it right
9x + y = 7
y = 9x + 7
6 = 9(5) + 7
6 = 45 + 7
<u>6</u> = <u>52</u>
52 52
0.1153846 = 1
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
