Answer:
An hour
Step-by-step explanation:
assuming the speed adds the half hour, three times the speed would take out an hour and a half (going by half hour marks)
Answer:
your answer will be A)
Step-by-step explanation:
I hope it helps have a nice day ^_^
Answer:
Step-by-step explanation:
Answer: 43.2 miles/hour
Step-by-step explanation:
Answer:
The correct form for each case is:
- a) 4 (5x + 6) = 20x + 24
- b) -5 (2x - 3) = -10x + 15
- c) 3 (9x + 2y) = 27x + 6y
Step-by-step explanation:
I'm gonna give you the reason for each case.
a) The original equation is:
Now, we're gonna solve the first part of the equation and comparate:
How you can see, the first part is different from the last number, for this reason, the mistake is the 6, then I change it by the 24.
b) The original equation is:
As the previous exercise, we're gonna solve the first part:
You must know that when you multiply two negative signs, the result is positive.
c) The original equation is:
But, this equation can be made in this form:
How you can see, the first part can't be operated or anything, the one form to operate this is removing the plus sign and operating like a multiply.
- 3 (9x + 2y) = 27x + 6y
- 27x + 6y = 27x + 6y