Answer:
4. x= -6
5. x= 7
6. x= -18
7. x= 8
8. x= 7
I'll do 9 and 10 in a separate answer
Step-by-step explanation:
4. Multiplying a negative with another negative always equals a positive, so replace x with -6, multiply -6 and -3 and you'll get 18.
5. To make it simple, think "what minus 3 equals 11?" So in this case, multiplying 2 by 7 would = 14, and that minus 3 is 11.
6. Divide a negative by a positive to get a negative answer. -9 + 6 = -3, but first we have to get 9. So since the fraction is x divided by 2, you'd replace x with -18 to get -9.
7. -3 x 8 is -24, + 11 is -13.
8. What minus 7 equals 21? 28. So replace x with 7. (7 x 4 = 28), subtract 7 from 28, and then you'll have 21.
Answer:
Step-by-step explanation:
Move all terms that don't contain xx
to the right side and solve.
Exact Form:x=−65x=-65
Decimal Form:x=−1.2x=-1.2
Mixed Number Form:x=−115x=-115
train A travels at 50 mph
train B travels at 60 mph
60 +50 = 110
330/110 = 3
they will meet in 3 hours
Answer: D
Step-by-step explanation:
guessed
