Answer:he started with 35 posters
Step-by-step explanation:
Let x represent the number of posters that he started with.
Stefan bought 5 posters to add to his collection. This means that the number of posters at this point is
x+ 5
A week later half of all his posters were lost during a move. This means that the amount of posters that were lost is (x+5)/2
The amount of posters left would be x - (x+5)/2
There are now only 15 posters left. This means that
x - (x+5)/2 = 15
Multiplying through by 2
2x - x - 5 = 30
2x - x = 30 + 5
x = 35
Answer:
1/4
Step-by-step explanation:
Mrs. Lincoln has 15 girls and 10 boys in her homeroom. She randomly selects two students. The total number of students is 25.
The probability of choosing one girl is:
15 / 25 = 3 / 5
Now, 24 students are left.
The probability of choosing one boy is:
10 / 24 = 5 / 12
Therefore, the probability of choosing one girl and one boy is:
3 / 5 * 5 / 12
= 3 / 12
= 1/4
<em>√36 can be taken out of the root as 6. So it's a rational number.</em>
<em>About the perfect square, if we (√36)² then we get 36. and √36 is just 6.</em>
<em>For non-repeating decimal, √36 is already an integer.</em>
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Where are the statements???
Y - 18 = (30 - 18)/(5 - 3) (x - 3)
y - 18 = 12/2 (x - 3)
y - 18 = 6(x - 3) = 6x - 18
y = 6x
The constant of variation (k) is 6.