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2 answers:
Answer:
<h2>After 1 hour and 24 minutes.</h2>Step-by-step explanation:
The turtle.
- It gets 7 kilometers head start.
- Its speed is 2 kilometers per hour.
The rabbit.
- It doesn't get any head start.
- Its speed is 7 kilometers per hour.
We know that, and
Assuming both have a constant movement, we define each one with
and
, replacing values, we have
which is the distance of the rabbit, and we know the turtle's is +7, so
.
Now, we substute the first equation into the second one,
If we divide, we'll have a mixed number
Therefore, the time they will meet is after 1 hour and 24 minutes.
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Answer:
c.
Step-by-step explanation:
Since the divisor is in the form of , use what is called Synthetic Division. Remember, in this formula, <em>-c</em> gives you the OPPOSITE terms of what they really are, so do not forget it. Anyway, here is how it is done:
4| 3 −11 −4
↓ 12 4
_______________
3 1 0 → 3x + 1
You start by placing the <em>c</em> in the top left corner, then list all the coefficients of your dividend [3x² - 11x - 4]. You bring down the original term closest to <em>c</em> then begin your multiplication. Now depending on what symbol your result is tells you whether the next step is to subtract or add, then you continue this process starting with multiplication all the way up until you reach the end. Now, when the last term is 0, that means you have no remainder. Finally, your quotient is one degree less than your dividend, so that 3 in your quotient can be a 3x, and the 1 follows right behind it, giving you the quotient of .
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