He drank 420 cups of water in one month
Answer:
1) B 1/4
2) C 36
3) C 4
Step-by-step explanation:
1) 1/2 chance for tails on both the first and second flips
1/2•1/2 = 1/4
2) 8/10 marbles are white.
as the marble is always replaced, the chances never change.
0.8(45) = 36
3) there are 6 sides to a cube but only one even number less than four (2), so the chances are 1/6
1/6•24 = 4
Answer:
no it is not
Step-by-step explanation:
beacause a rational number is usually like a whole numbee
5a - (-2a) + 9
When you subtract a negative number, you can replace the 'double negative' with a positive, or addition. So, instead of subtracting -2a, you can add 2a.
5a + 2a + 9 Combine like-terms
7a + 9