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Substitute

, so that

. The integral is then equivalent to

Then transforming back to

gives
Answer: Randomly assign the 1,200 students to <u>6 equal-sized</u> groups. Then select one of the groups and place their names in the bin. Randomly select the winner from the bin.
Step-by-step explanation:
First, let us see how many bins we will need in total.
1,200 students / 200 notecards per bin = 6 bins
Now, the first two options do not give all students a fair chance of winning. They are not our answer.
The last two have a different number of groups. Looking at the calculation we did earlier, we will need 6 equal-sized groups. This means our answer is the last option.
Answer:
its 6.40
Step-by-step explanation:
you have to use the distance formula which is

so points C is (-5,-1) and D is (0,3)
then you substitute the x
0--5=5^2
then
3--1+4^2=16
25+16=41
then square rout that and it equals 6.40