Because you need to have the same denominators to subtract fractions, you need to find the LCM of 15 and 9. The LCM of 15 and 9 is 45. Because 15 goes into 45 3 times, you multiply 2* 3 to find the numerator. Because 9 goes into 45 5 times, you multiply 5*5 to find the numerator. The new equation is 25/45 - 6/45. The answer is 19/45, which cannot be simplified any further.
Answer:
By 4 dollars so the final price is 14$
Step-by-step explanation:
An icy body that releases gas or dust with a tail thats always pointed away from the sun
Answer:
99% one-sided lower confidence bound = 26.77
Step-by-step explanation:
We have to calculate a 99% one-sided lower confidence bound for the population variance.
The sample size is n=25.
The degrees of freedom are then:

The critical value of the chi-square for this confidence bound is:

Then, the lower confidence bound can be calculated as:

Green or purple = 10
prob(green or purple) = 10/30 = 1/3