A circular plate bas diameter 27cm.

Calculate the circumference of the plate

The population of the United States is 3 * 10^8 people, and the population of the world is 6.9 * 10^9 people. How many times larger is the world population? Write your answer in standard notation.

5. Write an equation for a line with slope of - 2/3 and y-intercept 4.

A person invests $450 in an account that earns 4.75% annual interest compounded semiannually. Find when the value of the investment reaches $5,725. If necessary, round to the nearest year.

Find the real numbers x and y that make the equation true. 5 + yi = x + 3i

Wright a sentence to represent the equation 4m=-8

Can you tell which of the following triangles are right and explain your answer? The numbers represent the lengths of the sides: 9, 12, 15

Jantonia plans to purchase 4 pencils for her friends How much money will jotonia spend

1. Suppose a and b are real numbers where a > 0 and b < 0. a. Is - a + b positive or negative. Explain how you know. b. Is a - b positive or negative? Explain how you know. c. Is b - a positive or negative. Explain how you know.

Solve the following equation. 4 - 7x 10 = 15 - 6x - 8

A lookout tower has been erected on top of a mountain. At a distance of 5.8 km, the angle of elevation from the ground to the base of the tower is 15.7°, and the angle of elevation to the observation deck (on the top of the tower) is 15.9°.