Three sides of a quadrilateral measure 2.5 centimeters, 1.8 centimeters, and 9 centimeters. If the perimeter of the quadrilateral is 20.9 centimeters, what is the length of the fourth side?7.6 cm 15.7 cm 7 cm 34.2 cm

True/False: Sound waves are produced by vibrating molecules in a direction perpendicular to that of the direction the wave travels. False, sound waves are longitudinal/compression waves True, sound waves are transverse waves

In a police chase on the interstate, the suspect's car reached a speed of hour for a total 15 minutes. During that time, how many miles did the chase last?

How can you express (15 30) as a multiple of a sum of whole numbers with no common factor?

How do you solve 7a+10=2a

Using data for the population in the state of Alabama calculate the percent change in population growth to the nearest thousandth place from 2004 to 2005

What does it mean when a line changes and you translated

Three of the angles of quadrilateral are 100 degrees, 104 degrees and 44 degrees. What is the size of the 4th angle

Eugene typed 525 words in 15 minutes. At that rate, how many words would he type in 8 minutes?

Ling tried to evaluate the expression 15:5+7*5

What is the exact value of tan (-pi) ?