823-242 use rounding or compatible numbers to estimate the difference

We have to use rounding or compatible numbers to estimate the difference of 823 and 242.

Since, a quick way to estimate the difference between two numbers is to round each number and then subtract the rounded numbers.

Therefore, rounding the number 823 to the nearest tens = 820

Rounding the number 242 to the nearest tens = 240

The difference between the estimated numbers

= 820 - 240

= 580

Therefore, the estimated difference is 580.

x =±sqrt(1/3)

step-by-step explanation:

x+4/6x=1/x

multiply each side by 6x to get rid of the fractions

6x*(x+4/6x)=1/x*6x

distribute

6x^2 +4 = 6

subtract 4 from each side

6x^2 +4-4 = 6-4

6x^2 =2

divide by 6

6x^2/6 = 2/6

x^2 = 1/3

take the square root of each side

sqrt(x^2) = ±sqrt(1/3)

x =±sqrt(1/3)

step-by-step explanation:

i believe its "c" because all of the other options include a but it could be d because there is a way of financing with cash at certain places but its uncommon.