(a) A square has a perimeter of 88 m. What is the length of each side?
2 answers:
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The average time of the 20 athletes who did not qualify for the final is 11.2 seconds .
<u>Step-by-step explanation:</u>
Here we have , Twenty-eight athletes participate in a 100-meter race. The time of each athlete is measured during the qualification round. The average time is 11 seconds. The 8 athletes with the fastest time qualified for the final. The average time of these 8 athletes is 10.5 seconds. Let's have equations for this:
where
are athletes
⇒
⇒
⇒
⇒ , where m is average time of the 20 athletes who did not qualify for the final.
⇒
⇒
⇒
∴ The average time of the 20 athletes who did not qualify for the final is 11.2 seconds .
Answer:
0
Step-by-step explanation:
Given
Required
Determine its new position
Because the ring was initially below the surface of the pool;
Its initial position is
Taking it to the surface of the pool;
It means, the ring travels a distance of:
It's final position is the summation of its initial position and distance travelled;
<em>Hence, 0 represents its new position with respect to the surface of the water</em>