21 is 2% of what number?
2 answers:
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Answer:
The probability of an eighth grader winning is 1/3
Step-by-step explanation:
Total no. of students = 42
Number of students in 7th grade = 21
Number of students in 8th grade = 14
Number of students in 9th grade = 7
Probability of event =
So,the probability of an eighth grader winning=
Hence The probability of an eighth grader winning is 1/3
(B)
Step-by-step explanation:
Rewrite the equations into their standard forms. The first one can be rewritten as
and the 2nd can be rewritten as
Solving this system either by substitution or elimination, we get
If you add x + y, you'll get a negative number.
Answer: Josh sold 11 book shows and Jessica sold 198 books.
Look at the attachment for the work.
