Recall your d = rt, distance = rate * time.
notice, the distance are the same, say it was "d" miles.
and if car A is travelling at a speed of say "r" mph, then B is going at "r+15" mph.
how far is B going? well, r + 15.
Step-by-step explanation:
3x-5=8x-60
55=5x
x=11
Answer: Choice A, -1540 feet
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Explanation:
Multiply the rate (44 ft per sec) by the number of seconds (35) to get 44*35 = 1540
The answer will be negative to indicate that the altitude has gone down. If you put in a positive change, then the altitude would go up. So that's why the answer is choice A
Note: when you multiply 44 ft/sec by 35 sec, the "second" units cancel out leaving just feet.
Another note: if you want, think of the 44 as -44 to indicate that the plane is decreasing at a rate of 44 ft/sec
Y+3=1/2•(x+8) (point slope form)
should be correct
Answer: 10 bags that weigh 2 lb.
5 bags that weigh 4 lb.
2.5 bags that weigh 8 lb.
Hope this helps.
Step-by-step explanation:
