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Pavel [41]
3 years ago
10

How do i find the average speed for his question: "A bicycle racer rides from a starting marker at 10m/s. She then rides back al

ong the same rout from the turnaround marker at 16m/s. What is her average speed for the whole race?",
Mathematics
2 answers:
padilas [110]3 years ago
7 0

To find the average speed for the whole race, you just have to add the speed from a starting marker and the speed from the turnaround marker going back and divide it by 2 since there are only two speeds involved.

10 m/s + 16m/s = 26 m/s / 2 = 13 m/s

Therefore, the average speed for the whole race is 13 m/s.

vova2212 [387]3 years ago
6 0
<span>Average speed = Total Distance/Total time ------(1) Let us assume that the distance from starting marker to turnaround marker is 'x' Total distance travelled = 2x Speed from starting marker to turnaround marker , s1 = 10 m/s Speed from turnaround market to starting market , s2 - 16 m/s Let, Time taken from starting marker to turnaround marker be t1 Time taken from turnaround marker to starting marker be t2. Applying these values in equation (1), Average speed = (2x)/(t1+t2) -------(2) From (1), t1 = x/s1 = x/10 t2 = x/s2 = x/16 Substituting the above in (2), Average speed = (2x)/(x/10+x/16) m/s = (2x)/(13x/80) m/s = 160/13 m/s = 12.3 m/s We can also arrive at the average speed by using the formula 2(s1)(s2)/(s1+s2)</span>
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Answer:

Step-by-step explanation:

Simplify expression with rational exponents can look like a huge thing when you first see them with those fractions sitting up there in the exponent but let's remember our properties for dealing with exponents. We can apply those with fractions as well.

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From above, we have a power to a power, so, we can think of multiplying the exponents.

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Let's recall that when we are dealing with exponents that are fractions, we can simplify them just like normal fractions.

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(p^{^ {\dfrac{12}{2}}})

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Let's take a look at another example

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Here, we apply the \dfrac{5}{3} to both 27 and x^6

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Let us recall that in the rational exponent, the denominator is the root and the numerator is the exponent of such a particular number.

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8 0
2 years ago
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Step-by-step explanation:

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