Answer:
5/18 is a rational number because a rational number is any integer,fraction terminating decimal,or repeating decimal.
Answer:
Answer D (the fourth one)
Step-by-step explanation:
First, we need to set up a (y−k)^2=4p(x−h). After plugging in all of your values, you would get (x-5)^2=-4(y-1). Now, we need to solve in terms of y by dividing each side by the factors that don't contain the variable. Your final solution should be 
Answer:

Step-by-step explanation:
Let the office charge = x
Amount paid by Medicare = ⅞x
Amount paid by Ross = ¼(⅞x) = $262.50
Solve for x

Check:

OK.
81 inches x 1 foot
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12 inches
81/12 = 6.75 C
10 street lights each mile x 5 miles. equals 500 street lights.
the last statement is a little bit of a trick. there is a light at point 0. there are still 10 lights needed to make it to 1 mile. if there was not a street light at the beginning. then the answer would be 501