At which root does the graph of f(x) = (x + 4(x + 7,5 4)(x + 7,5 cross the x-axis?​

What is the length of the missing leg in this right triangle? 18 mm 24 mm 26 mm 32 mm

For which of the following counts would a binomial probability model not be reasonable? a)the number of people in a classroom born in januaryb) the number of people in a classroom with red hair c) the number of people admitted to a hospital in a day with a particular disease d) the number of heart beats in a one-minute perio.

In a two-digit number the units' digit is 7 more than the tens' digit. the number with digits reversed is three times as large as the sum of the original number and the two digits. find the number.