Use scientific notation to estimate the number of inches in 1,225 miles. Include all calculations in your final answer. 1 inch ≈ 1.578 × 10 -5 miles.

In 1225 miles, there are ≈7.7629 x 10⁷ inches

Step-by-step explanation:

Given that

1 inch≈ 1.578 × 10 -5 miles.

?? inches   =      1225 miles

Solving  

(1,225 x 1 inch) / 1.578 x 10 ⁻⁵)

=77,629,911 changing to scientific notation becomes 7.7629 x 10⁷ inches

is it 35

step-by-step explanation:

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)