Bobby deleted 45 songs from his iPhone. If the ratio the songs he deleted to songs he kept was 9: 10, how many songs he originally have on his iPhone?

What is the final amount if 1442 is increased by 9% followed by a 6% decrease?

A plane is heading 25° west of south. How many degrees south of west is this plane flying?

Nina can braid 48 inches of rope in 1 hour. what is her speed in feet per hour?

The top of a coffee table is the shape of a rectangle the length of the top of the coffee table is 3.5 feet in the area is 10.5 ft. what is the width at the top of the coffee table?

How many times wider is 2ft than the width of 2in

Write word phrase to represent the numerical expression below. 4 + (27-10)

Find the value of y when x=2 - x - (-2) = y

In a group of 21 students, 8 students take Art courses, 7 students take Music courses. Two students take both courses. A student is chosen randomly from this group. What is the probability that the student takes either Art or Music courses? 57

5% of what number is 63?

Find the sum of the "n" terms of the series: Sn=1²+3²+5² + ... + (2n-1) ²