In a diagram OA and OB are two roads where OA=420m, OB=400m and AB=580m. Jim and Huili start to walk from A and B towards O respectively at the same time. Jim speed is 2 m/s and Huili speed is 1 m/s. After a 1 minute and 40 seconds. Jim reaches D and Huili reaches C. a. Find the lengths of OC and OD? b. Find the distance between C and D?

answer:

it is general formula that is used to write value to its excet position

a11 a12 a13

a21 a22 a23

it is the example of order 2 by 3 matrix in this

a11 means value occur in 1 st row 1st column

a12 means value occurs in 1st row 2nd column

a13 means value occur in 1st row and 3rd column

a21 means value occurs in 2nd row and 1st column

a22 means value occurs in 2nd row and in 2nd column

a23 means value occurs in 2nd row and in 3rd column

c

step-by-step explanation:

15.36 per mile

but forgot to round

i am pretty sure