Answer:
3
Step-by-step explanation:
i dont know im guessing
I believe the correct answer is C. square meters
The possible values of N from the given probability parameters is; N equals 15 or 21
<h3>How to Solve Algebra Problems?</h3>
We are told that;
Number of pens in the box = N
Let the number of red pens be x
Thus; number of black pens = x + 3
Thus;
x + x + 3 = N
x = (N - 3)/2
The probability that she will take a black pen followed by a red pen is;
P(she will take a black pen followed by a red pen) = (x + 3)/N * x/(N - 1)
Plugging in he relevant values and solving for N gives ;
Solving for N gives N equals 15 or 21
Read more about Algebra at; brainly.com/question/723406
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Answer:
27
Step-by-step explanation:
here we remark that we have a proportional relationship Between the number of seeds and the number of flowers
Let x be the number of seeds we need in order to guarantee that 45 flowers grow.
8 seeds ————————-> 5 flowers
x seeds ————————-> 45 flowers
in order to find x ,We have to solve this equation :
⇔ x/8 = 9
⇔ x = 8×9 = 72
“how many seeds did not grow” : 72 - 45 = 27
Assume that the number of books you buy is n.
Now since each book costs 0.75$ and you buy n books, therefore, the total amount you pay for all the books can be calculated as follows:
total amount paid = $0.75n
Now, you have 10$ and you have paid $0.75n for the books.
Based on this, the amount of money left can be calculated as follows:
amount of money left = 10 - 0.75n