What is the exact circumference of a circle with a radius of 15 cm? 10π cm 15π cm 30π cm 60π cm

How many different ways can you make change for $.50 using only nickels, dimes, and quarters?

Clara solved the equation 7/3x = −2/3 as shown → 7/3x( 3/7 ) = −2/3 ( 3/7 ) x = −14 what is clara’s error?

50 points! antonio made a scale model of a building. the model's scale is 1 inch to 235 feet and its height is 3.5 inches. what is the exact height of the actual building? enter your answer in the box.