Which of the following shows a true statement? -12 + (-7) = 12 - 7 5-(-3) -- 5+ 3
21 – 6 = 6 + (-21)
-14 + 32 = 32 14​

If x + 10 = 70, what is x? a. 40 b. 50 c. 60 d. 70 e. 80

For the rule of 78, for a 12-month period, the last term in the sequence is 12 and the series sums to 78. for an 10 month period, the last term is and the series sum is . for a 15 month period, the last term is and the series sum is . for a 20 month period, the last term is and the series sum is

Aremote-controlled boat can travel at 4 feet per second in calm water. the boat traveled 48 feet with the current, and then it traveled 16 feet against the current in the same amount of time. how fast is the current?