Answer:
The letter "x" is often used in algebra to mean a value that is not yet known. It is called a "variable" or sometimes an "unknown". In x + 2 = 7, x is a variable, but we can work out its value if we try!
Step-by-step explanation:
Answer:
a = 281.25 mg after two hours
Step-by-step explanation:
Here, we want to get the amount of aspirin that will be present after two hours
what we simply do here is to substitute 2 for t
Thus, we have it that;
a = 500(3/4)^2
a = 500•(0.75)^2
a = 281.25 mg
Answer:
EC/BC = DE/AB
Step-by-step explanation:
There are multiple answers for this, here's one: EC/BC = DE/AB
One third (or 1/3 ) is the correct answer
