Which system of equations has exactly one solution?

-

2x-4y = 8

x+y=7

3x+y=-1

x-2y = -2

3x+3y=3

-Ex-by=3

3x-2y=4

-3x+2y=4

Which pair of numbers is relatively prime? a. 72 And 115 b. 120 And 835 c. 201 And 735 d. 303 And 1041

Which number has the the greatest absolute value? -20 -10 0 10

Solve this system of linear equations. Separate the x and the y values with a comma. 16x=50-14y -7x=77-14y

In triangle FGH, mF is 94°, mG is 49°, and mH is 37°. The exterior angles of triangle FGH are J, K, and L, and they are adjacent to F, G, and H, respectively. What is mK? A. 86° B. 49° C. 143° D. 131°

Complete the statement. The polygon is and octagon and is

Before school, Janine spends 1/10 hour making her bed, 1/5 hour getting dress, and 1/2 hour eating breakfast. What fraction of an hour does she spend doing these activities?

Based on past records, a salesperson has a 15% chance of closing a sale with new customers. How many sales can the salesperson expect with his next 5 customers? A. 0.75 B. 1.55 C. 3.5 D. 4.25

Jimmie invested $27,500 at 6.27% compounded continuously. What will Jimmie's account balance be in 50 years?

The area of a cross section at station 4+50 is 10.31 sq. in., and at station 5+00 is 14.18 sq. in. The horizontal scale of the cross section is 1" = 40' and the vertical scale is 1" = 10'.

Calculate the inverse of the matrix and find the values for a, b, c, and d: A=[4 12 1 10] A-^1=[a/14 b/7 c/28 d/7]