If 38 is added to 5/9 of a number, the result is 128. find the number

162

Step-by-step explanation:

Let x be the unknown number

5/9 x +38 = 128

Subtract 38 from each side

5/9 x +38-38 = 128-38

5/9x = 90

Multiply each side by 9/5 to isolate x

9/5 * 5/9x = 90 * 9/5

x =162

The number is 162

.5 lb

step-by-step explanation:

12 in / 6 in =2 in

.25 x 2 = .5 lb

option (b) is correct

step-by-step explanation:

to find the solution of this system, we need to convert it into reduced row-echelon form. we have,

after applying row operations r2 -> r2/2 and r3 -> r3/3, we get,