Neeeeeed help?!?!!!!!!!
1 answer:
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Answer
y =
Step-by-step explanation:
-10 + 2y = 7
Add 10 to both sides of the equation
2y = 7 + 10
Add 7 and 10
2y = 17
divide each term in 2y=17 by 2
Divide y by 7
y =
<u>Hope this helps </u>
Answer:
Probability that one of them is mathematics and other two are either physics or history books = 0.51
Step-by-step explanation:
Given - A student needs to select 3 books from 3 different mathematics, 3 different physics and 1 history books.
To find - What is the probability one of them is mathematics and other two are either physics or history books ?
Solution -
Given that,
A student needs to select 3 books from 3 different mathematics, 3 different physics and 1 history books.
So,
Total number of books = 3 + 3 + 1 = 7
The student has to select 3 books
So, Total number of ways = = 35
So,
Probability that one of them is mathematics and other two are either physics or history books is -
=
=
=
= 0.51
⇒Probability that one of them is mathematics and other two are either physics or history books = 0.51