Answer:
3
4
2
1
Step-by-step explanation
3.2x+5.7=2.5x. X=-8.142857
10.1x-1.6x+44=-7 x=-6
7.9x+x+4=1.1x-16 x=-2.564103
1/4x+5/2x-2=4-1/4x x=2
Answer:
50
Step-by-step explanation:
Adding up 20, 30, 40, 50, 60, 70, 80, we get 350. There are 7 numbers in this set, so divide this 350 by 7. We obtain the mean, 350/7 = 50 (Answer B)
Answer:
2143-764=1379
Step-by-step explanation:
Answer:r>4
Step-by-step explanation: You just subtract four from both sides