Answer:
35.3 years
Step-by-step explanation:
Given :
In 1980 the median age of a resident of the united state was 30 years.
By 2000 the median age had increased 5.3 years.
Solution :
The median age the median age of a resident of the united state = 30 years
Since the median age had increased 5.3 years in 2000
Thus , the median age of a resident of the United States in year 2000 = 30+5.3 = 35.3 years
Hence the median age of a resident of the United States in year 2000=35.3 years
Answer:
100
Step-by-step explanation:
10^2 is 100 therefore it is 100
B is the answer I think I spend to much
Answer:-5/7 i think that is wrong
Step-by-step explanation:
Because the average is 7.7, his total points are equal to 7.7*10=77.
Because 7*10<77<8*10, Luke cannot have scored 8 10s. We now seek to prove that he can score 7 tens.
This leaves him with three tests left, that sum to 7 marks. There are clearly many ways to arrange this - for example, 2, 3, and 3 on the first three tests, then ten on all seven other tests. As this shows that 7 10s works and we have proven that 8 10s does not work, 7 is the maximum amount of 10s Luke could have scored.
