Can you help with this? Thank you!

To solve for j, cross multiply:

4 x 45 = 18 x j

180 = 18j

Divide both sides by 18:

j = 10

j=10

if you dont need an explanation dont read this:

firstly you reduce the 4/18 by 2 (basically simplifying) , which then becomes 2/9..

then you cross the 2 by 45 and 9 to j (you multiply 2x45 and 9xj=9j)

so it equals to 90=9j

then you divide both sides by 9

j=10

answer: 26

step-by-step explanation:

well, michelle wanted to measure the height of her school's flagpole she placed a mirror on the ground 48 feet from the flagpole then walk backwards until she was able to see the top of the pole in the mirror her eyes were 5 feet above the ground and she was 12 ft from the mirror using similar triangles find the height of the flagpole to the nearest tenth of a foot find the geometric mean of them pair of numbers. its easy math

ab will be equal to