Several expressions are shown below. Which expressions are equal to 18? 5x (9 x 2)
(9 X 2) X (4-3)
(9 X 2) + 3
22 - (9 X 2)
(9x2 + 7
4x x (9x2)
1 X 9 X 2)
3X (9x2)

A33 gram sample of a substance that's used to detect explosives has a k-value of 0.1473. n = noekt no = initial mass (at time t = 0) n = mass at time t k = a positive constant that depends on the substance itself and on the units used to measure time t = time, in days

Aladder that is 20ft long is leaning against the side of a building. if the angle formed between the ladder and the ground is 75 degrees how far is the bottom of the from the base of the building?

Jayne is studying urban planning and finds that her town is decreasing in population by 3% each year. the population of her town is changing by a constant rate.true or false?