Is 15/4 rational or irrational form

For which equations is x = 9 a possible solution? |x| = 9 -|x|=9 -|-x|=9 -|-x|=-9 |x|=-9 |-x|=9 |-x|=-9

Determine the quotient 2 4/7 : 1 3/6

How many significant digits are in this number 85 000?

A farmer wants to determine if a new fertilizer gives her a better crop yield than her old one

What are two reasons a common measuring system is important?

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]