Mount mckinley in alaska rises 20,320 feet in the air while mount kosciusko in australia rises 7,310 feet. what is the difference in the height of these mountains? express your answer in scientific notation.

1.301 × 10⁴ ft  

Step-by-step explanation:

Difference = h₂ - h₁

Difference = 20 320 - 7310

Difference = 13 010 ft

To convert the number to scientific notation, we move the decimal point four places to the left and make the exponent of 10 equal to +4.

Difference = 1.301 × 10⁴ ft

answer:   x = 3 + √11     and     x = 3 - √11

step-by-step explanation:

x² - 6x + 9 = 11

(x - 3)² = 11

x - 3 = ±√11

    x = 3 ± √11

x = 3 + √11     and     x = 3 - √11