The half-life of a radioactive substance is 14 days. after 4 days a sample of the substance has been reduced to a mass of 4 mg.
what was the initial mass in mg) of the sample?
round your answer to 2 decimal places as need.
using your answer from above, after how many days will there only be 0.5 mg of substance left?
round your answer to 2 decimal places as needed.

answer:  

step-by-step explanation:

here x represents the height of the pole,

and, the height of the shadow of the pole is 12 feet.

also, the angle of elevation from the top of the pole is 40°,

therefore,

by the low of sine,

which is the required equation for finding the value of x,

image result for what is another name for consecutive interior angles? ​

when two lines are crossed by another line (called the transversal): the pairs of angles on one side of the transversal but inside the two lines are called consecutive interior angles. in this example, these are consecutive interior angles: d and f.

step-by-step explanation:

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im not sure