X=<span><span><span>−7</span>±<span>√<span>49<span><span>−11</span><span>v2</span></span></span></span></span><span>v2
but if you are telling me for solving for something else tell me</span></span>
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:
The first piece is 19 inches, the second is 52, and the third piece is 57.
Step-by-step explanation:
Solve for x using (x) + (x + 33) + (3x) = 128.
<span>Polly uses a probability simulator to pull colored ribbons from a bag 60 times and to flip a coin 60 times. The results are shown in the tables below:
</span>
<span><span>Color of RibbonNumber of Times Pulled</span><span><span>White25</span><span>Green14</span><span>Orange21</span></span></span>
<span><span>HeadsTails</span><span>3822</span></span>
<span>Using Polly's simulation, what is the probability of pulling an orange ribbon and the coin landing on tails?</span>
