For which of the following matrices can a determinant NOT be calculated? A. a 2 x 2 matrix
B. a 3 x 3 matrix that has no inverse.
C. a 2 x 3 matrix
D. a 5 x 5 identity matrix
E. an invertible 4 x 4 matrix

Which equation can be used to solve for the unknown number? seven less than a number is thirteen. n-7=13 7-n=13 n+7=13 n+13=7

Paula makes stained-glass windows and sells them to boutique stores. if her costs total $12,000 per year plus $4 per window for the frame. how many windows must she produce to earn a profit of at least $48,000 in one year if she sells the windows for $28 each? 1. define a variable for the situation. 2. write an inequality that represents her profit. note: revenue is money coming in. cost is money going out. profit is the difference between the revenue and the cost. in other words: revenue - costs profit 3.using words, describe how many windows she must sell to have a profit of at least $48,000.

Two numbers have a sum of 93. if one number is p, express the other number in terms of p.