Is the product of two happy numbers always a happy number?

Y^2=4-x^2 determine whether the equation defines y as a function of x

Crystal bought b boxes of cookies to bring to a party. Each box contains 18 cookies. She decides to keep two boxes for herself. She brings 90 cookies to the party. Which equation can be used to find the number of b boxes Crystal bought?

Jelly read 30 pages of her 300 page book in 6 hours at this rate how long will it take her to read the entire book? A. 60h B. 5h C. 6h D. 30h

What is the surface area of a rectangular prism that measures 12 meters by 11 meters by 9 meters

11 minus the product of 5 and a number k

Salem sue is a giant cow statue in North Dakota. The cow is 38 feet high. A real cow averages 4 feet 5 inches and a chicken is 13 inches. If this cow were real, how big would the chicken be on the same farm?

17/4 minutes with 510 total beats How many beats per minute

What is the answer? - 6 (5/3 x + 4)

Can anyone give me a simple answer to understand what root squared is and a way I can easily do it if ur stupid at maths

The one digit of a two digit number is one less than the tens digit. One-half the sum of the ones digit and double the tens digit is 13. Find the number and show your work.