Answer:
The substance decays by 7.5% every year
Step-by-step explanation:
Answer:
21 kilometers
Step-by-step explanation:
Let the height be
. Then, the length of the base is
. The formula for the area is of the triangle is given by base*height/2. Therefore, the area of the triangle is equal to
, which is in turn equal to 441. Since
must be positive, then
, meaning that the height is
kilometers.
Answer:
a) 6
b) 4.5
Step-by-step explanation:
6= 18/3 = x
4.5= 9/2 = x