Maria Christina

This page lists questions and answers that were posted by visitors named Maria Christina.

Questions

The following questions were asked by visitors named Maria Christina.

Find a three-digit positive integers such that the sum of all three digit is i4, the tens digit is two more than ones and if the digit is reversed, the number is unchanged.

Archie is 12 years older than her brother Channie. Four years from now, Channie will be two-thirds as old as Archie. How old are they now?

Prove: 1) 1 / sec X - tan X = sec X + tan X 2) cot A + tan A = sec A csc A 3)sec A - 1 / sec A + 1 = 1 - cos A / 1 + cos A

Answers

The following answers were posted by visitors named Maria Christina.

3/4 X 9 = 27/4 = 6 3/4 Therefore, Turner needs 6 3/4 feet of ribbons for a costume.

The answer is not found in the choices. The correct answer is 6/7.

let x - chase x + 13 - serenity equation: x + x + 13 = 27 Solution: x + x + 13 = 27 2x + 13 = 27 2x = 27 - 13 2x = 14 x=7 Therefore, chase is 7 years old and serenity is 20 years old.