Answer:
-2,6 2,6
Step-by-step explanation:
Answer:
B.-7.34
Step-by-step explanation:
Because it's a repeating number
Answer:
40.82 kg
Step-by-step explanation:
40.8233 and round it
Answer:
-13/30
Step-by-step explanation:
take 1/6 to other side,
x=-3/5 -1/6
taking LCM of denominators,
-8-5/30
=-13/30
4x + 7y = 1 ⇒ 12x + 21y = 3
3x + 10y = 15 ⇒ <u>12x + 40y = 60</u>
<u>-19y</u> = <u>-57</u>
-19 -19
y = 3
4x + 7(3) = 1
4x + 21 = 1
<u> - 21 - 21</u>
<u>4x</u> = <u>-20</u>
4 4
x = -5
(x, y) = (-5, 3)