Answer:
23
Step-by-step explanation:
It is given that, in Russia there are 21 rocket launch failures out of 743 total launches. We need to find no of failures for the next 800 launches.
21 rocket = 743 launches
1 launch = 
For 800 launches,

or
= 23 failures
So, there are 23 failures in next 800 launches.
Answer:
cm
Step-by-step explanation:
C = 
C = 
3/5 = .6 and 4/10 = .4, so 3/5 is greater than 4/10
If they intersect at a 90 degree angle it’s B. If they never intersect if they continued for ever it’s A. If they intersect but it’s not at a 90 degree angle it’s D.