How do you identify an extraneous solution?

The tablecloth extends 6 inches over the table edge on both ends of the diameter. The diameter of the tablecloth is 96 + 6 + 6 or 108 inches and the radius is 54 inches. Thus, we have the following:

I need some who smart to answer thus qestion want the expression in the words 9 * (8+4)

How do you convert from base 10 into a different base? Or vice versa?

What is the product of 6256 and 486

Line a is parallel to line b, m∠2=4x+44 and m∠ 5=5x+38. Find the value of x A. 4 B. 6 C. - 5 D. 5

A newspaper reporter wants to know how popular the hobby of bird watching is in the city. He asked people at the local bird refuge if they watched birds as a hobby. Which of the following best explains whether the reporters data is valid or not?

I am very confused on how to figure out if y = 3/4x is proportional?

Alison wants to buy a mountain bike for $339.12. If she saves $28.26 each month, in how many months will she be able to buy the bike?

At 12 o'clock the temperature was 7°C. The temperature decreased by - 20°C. What is the new temperature?

Ashleys rentals charges $27.50 per hour to rent a surfboard and a wetsuit. Darlas surf shop charges $23.25 per hour to rent a surfboard plus $17 extra for a wetsuit.