1. solve the following system of equations by performing gaussian elimination on the corresponding augmented matrix. x1 – 2x2 + x3 + 4x4 – 25 = 0 -2x1 + 4x2 + x3 – 224 – 45 = 0 3x1 – 6x2 + 8x3 + 4x4 – 13x5 = 0) 8x1 – 16x2 + 7x3 + 12x4 – 6x 5 = 0

Asif spent $745.10 on 13 new file cabinets for his office. small file cabinets cost $43.50 and large file cabinets cost $65.95. write and solve a system of equations to find the number of small cabinets and large cabinets he purchased. determine if each statement is true or false. 1. he purchased 5 small cabinets. true or false 2. he purchased 7 large cabinets. true or false 3. he spent $527.60 on large cabinets. true or false

When you answer this can you explain

Arefrigeration system at your company uses temperature sensors fixed to read celsius (°c) values, but the system operators in your control room understand only the fahrenheit scale. you have been asked to make a fahrenheit (°f) label for the high temperature alarm, which is set to ring whenever the system temperature rises above –10°c. what fahrenheit value should you write on the label?