A window shaped like a circle has a diameter of 15 centimeters what is the circumference of the window? Use 3.14 for pie
1 answer:
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Answer:
Step-by-step explanation:
Let x, y , and z be the numbers.
Then the geometric sequence is
Recall that term of a geometric sequence are generally in the form:
This implies that:
a=32 and
Substitute a=32 and solve for r.
Take the fourth root to get:
Therefore
Remember that the radicand (the area under the root sign) must be positive or zero for a radical with an even index (like the square root or fourth root, for example). This is because two numbers squared or to the fourth power, etc. cannot be negative, so there are no real solutions when the radicand is negative. We must restrict the domain of the square-root function.
If the domain has already been restricted to
, we can work backwards to add 11 to both sides. We see that 
must be under the radicand, so the answer is A.
If the domain has already been restricted to