Answer:
20 - n
Step-by-step explanation:
Subtract like-terms:
35 + 4n - 15 - 3n = 20 - n
Answer:
25 questions
Step-by-step explanation:
0.72x = 18
x = 25
Answer:
(x² - 3)(x² + 3)
Step-by-step explanation:
- 9 ← is a difference of squares and factors in general as
a² - b² = (a - b)(a + b) , thus
- 9
= (x² )² - 3²
= (x² - 3)(x² + 3)
Answer:
2/27
Explanation:
The two events, drawing a blue marble out of each bag, are independent. This means to find the probability of both occurring, we multiply them.
In the first bag, there are 5 blue marbles out of 15 total. This makes the probability 5/15, or 1/3.
In the second bag, there are 2 blue marbles out of 9 total. This makes the probability 2/9.
Together, the probability of both events happening are:
1/3(2/9) = 2/27
Answer:
The answer is 120
Step-by-step explanation:
