If one pair of opposite sides of a quadrilateral is congruent, when is the quadrilateral a parallelogram?

What are two ways to write 4z in words

Ryan works mowing lawns and babysitting. He earns $8.20 an hour for mowing and $7.70 an hour for babysitting. How much will he earn for 3 hours of mowing and 7hours of babysitting?

5 (x-3) / 8 + 2=7 solve?

What is the answer to: 1/6d+2/3 = 1/4 (d-2)

9e + 4 = - 5e + 14 + 13e solve for e

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]