3. the sum of three consecutive integers is 1,623.

540, 541, 542

Step-by-step explanation:

let the number be n

hence the 3 consecutive numbers may be expressed as:

n , n+1, n+2

it is given that the sum of the 3 numbers is 1623

hence,

n + (n+1) + (n+2) = 1623

n + n + 1 + n + 2 = 1623

3n + 3 = 1623

3n = 1623 -3

3n = 1620

n = 1620 / 3

n = 540

hence the numbers are

540, (540 + 1) , (540 + 2)

or

540, 541, 542

v: l•w•h÷2.

v: 20•6•8 ÷2

v: 960÷2

v: 480

answer: 457.14

step-by-step explanation:

205 - 45 = 160

160 / .35 = 457.142857