Answer:
Step-by-step explanation:
1. Combine like terms
2y-7y = -5y
-5y=5
2. Divide by -5 and the answer is
Genise is making cookies. She needs 1 2/3 cups of flour for one batch, but she wants to make 2 1/2batches. Write an equation tha
1 answer:
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Answer:
Complete explanation is in the picture.
Step-by-step explanation:
Recall your d = rt, or distance = rate * time
the two planes, are 1180 miles apart
say plane A and plane B
two hours later, they pass each other
how long have both been flying by the time they passed each other?
well, 2 hrs
so the time for both is the same, 2
now, one is faster than the other, by 4 miles, say hmmm plane A, doesn't really matter, it could be either... but say A, so if A has a rate of "r",
B will have a rate of r-4, whatever "r" is
now, the distances travelled, say A travelled distance "d", whatever that is,
B, travelled the difference from 1180 and that, or 1180 - d
1180 is the total amount of miles apart, take away "d", and B travelled
1180 - d
thus
solve for "r", to see A's rate
how fast was B going? well, r-4
the two planes, are 1180 miles apart
say plane A and plane B
two hours later, they pass each other
how long have both been flying by the time they passed each other?
well, 2 hrs
so the time for both is the same, 2
now, one is faster than the other, by 4 miles, say hmmm plane A, doesn't really matter, it could be either... but say A, so if A has a rate of "r",
B will have a rate of r-4, whatever "r" is
now, the distances travelled, say A travelled distance "d", whatever that is,
B, travelled the difference from 1180 and that, or 1180 - d
1180 is the total amount of miles apart, take away "d", and B travelled
1180 - d
thus
solve for "r", to see A's rate
how fast was B going? well, r-4