Which mathematical property is shown by the statement?

(4y*9) * 7 = 4y * (9*7)

A regular decagon has 10 sides. How many reflectional symmetries does a regular decagon have? 5 10 15 20

Sebastian and two friends pooled their money and bought eight packages of baseball cards. there were six cards in each package. they decided to divide the cards out evenly. how many cards will each person get

There are 1265 students at Cypress Middle School. 42% of the students are enrolled in PE. Which equation could be used to represent the number of students enrolled in PE?

12z-7z-2=13 solve for z

School A has 216 students and 12 classrooms. School B has 104 students and 4 classrooms. What is the ratio of students to classrooms at school A? What is the ratio of students to classrooms in school B?

A baseball player swings and hits a pop fly straight up in the air to the catcher. The height of the baseball in meters t seconds after it is hit is given by the quadratic function h (t) = - 4.9t^2 + 9.8t + 1.

In two years what percent of his age will Benny's mom be at that time since Benny is 12 and his mom is 48

The ages of three cousins are consecutive even whole numbers. The sum of the youngest and oldest is 16. How old is the oldest cousin?

Find the value of x if 8x=4^x

A company dyes two sizes of rugs. A small rug requires 8 hours for dyeing and a medium-size rug requires 12 hours for dyeing. The dyers have to make at least 22 rugs, and they must do it in less than 240 hours.