How to find if the matrix ax = b has a unique solution?

The depth of a river went from 64 feet to 56 feet. What was the percent of decrease in the water depth?

Which expression has both 8 and n as factors? 8n 8n 8-n 8 + n.

Suppose that of all individuals buying a certain digital camera, 60% include an optional memory card in their purchase, 40%include an extra battery, and 30% include both a card and battery.

Josh wants to add a model of a tree to his model railroad layout. How big should the model tree be if the actual tree is 315 inches and the scale factor is 1 : 90? 395 inches 35 inches 39.5 inches 3.5 inches

32*33*34 is equivalent to what

Simplify the expression: 4 (2x-12) + 60+5x

What is 15x plus 6x?

When y is 3 and x is 5 what's the constant of variation

Find the value of c so that (x+1) is a factor of the polynomial p (x). p (x) = 2x^4-5x^2+cx+1

A company ordered 10 boxed lunches from a deli for $74.50. each boxed lunch cost the same amount. which equation represents the proportional relationship between y, the total cost of the nixed lunches and x, the number of boxed lunches? A) 7.