A regular polygon has possibles angles of rotational symmetry of 20, 40, and 80. How many sides does the polygon have?

Find the volume of a right circular cone that has a height of 15.8 in and a base with a diameter of 12.7 in. Round your answer to the nearest tenth of a cubic inch.

The exponent indicates how many times the (blank) is used as a factor. Answer the question down below, ty c;

Show the inequality for x. Show each step of the solution 12x>7 (4x+5) - 19

When a complex number is in the denominator, why is it necessary to multiply by the conjugate?

An inclined railway is 5412 ft long and runs up the side of mountain at an average incline of 19 degree. What is the gain in altitude? Round to the nearest foot

5. Andre is solving the equation 4 (x + 3) = 7. He says, "I can subtract from each side to get 4x = 1 and then divide by 4 to get x = " Kiran says, "I think you made a mistake." a. How can Kiran know for sure that Andre's solution is incorrect? b.

On three examinations, Dana received scores of 84, 89, and 78. What score does Dana need on the fourth examination to raise his average to 85?

You have a Spanish meeting every forth day and a math club meeting every tenth day. Today you have both meetings. In how many days will you have both meetings on the same day again?

5.2 turned into a fraction in simplest form.

A certain laptop is really popular and sells for $199.99. Since sales are so good, the store raises the price by 13%. What is the cost of the laptop after the markup?