Answer:
x=-5, y=-8. (-5, -8).
Step-by-step explanation:
-x+2y=-11
5x-8y=39
---------------
5(-x+2y)=5(-11)
5x-8y=39
---------------------
-5x+10y=-55
5x-8y=39
--------------------
2y=-16
y=-16/2
y=-8
-x+2(-8)=-11
-x-16=-11
-x=-11+16
-x=5
x=-5
#4)
cross multiply
2(8x+10) = 4 * 5x
16x + 20 = 20x
4x = 20
x = 5
Answer:
6.8, 26.2, -7.8, -10.2, 2.6, -12.9
Step-by-step explanation:
20. is 6.78232 Rounded answer is 6.8
21. 26.172504657 rounded to the nearest tenth is 26.2
22. is -7.8102496759 rounded to the nearest tenth is -7.8
23. -10.246950766 rounded to the nearest tenth is -10.2
24. is 2.5980762114 rounded to the nearest tenth is 2.6
25. -12.942179106 rounded to nearest tenth is -12.9
For 44
7x2=14
14+8=22
22x2=44
Is this ok, I hope I helped :)
