Answer:
9/a
Step-by-step explanation:
8/a - 6/a + 7/a
Since the denominators are the same, we can add the numerators
8-6+7 =9
Then put it over the common denominator a
9/a
Answer:
1/9
Step-by-step explanation:
The die has sides 1,2,3,4,5,6
P( less than 5) = 1,2,3,4 / total
=4/6 = 2/3
Then rolling again
P(greater than 5) = 6/total = 1/6
P( less than 5,greater than 5) = 2/3* 1/6= 1/9
The equation is 30x + 25
since the x is with the 30, that would be the cost per lesson, because you would multiply 30 by the number of lessons(x)
I think they would go to the rational numbers