240 days is 4 times the half-life, which means that a sample of 1000 mg will decay to

after 240 days.
9:4:5.....added together = 18
9/18 (72) = 648/18 = 36
4/18 (72) = 288/18 = 16
5/18 (72) = 360/18 = 20
so we have 36:16:20
Answer:b 27 feet
Step-by-step explanation:You need a ladder that will reach up a 25 foot tall house when placed 10 feet away from the house.
Answer:
The volume of the similar prism is 
Step-by-step explanation:
we know that
If two figures are similar, then the ratio of its volumes is equal to the scale factor elevated to the cube
Let
z-----> the scale factor
x----> the volume of the larger prism
y----> the volume of the smaller prism
so

In this problem we have
-----> the scale factor

substitute and solve for x

Answer:
A ray is a part of a line that has one endpoint and goes on infinitely in only one direction.