Solve.If an earthquake measured 7 on the Richter scale, what was the intensity of the earthquake in terms of I0? The magnitude on the Richter scale of an earthquake of intensity I is 
A. 7,943,282? I0
B. 1096? I0
C. 1,000,000? I0
D. 10,000,000 ? I0
Answer: D
Mathematics
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Find the numerator determinant for x in the following equations: 2x + 3y = 3; 4x - 2y = 6
a. ³3 3³ ³ ³ ³2 6³ b. ³2 3³ ³ ³ ³4 2³ c. ³2 3³ ³ ³ ³4 6³ d. ³3 3³ ³ ³ ³6 -2³
Mathematics
Establish the identity.cot x sec4 x = cot x + 2 tan x + tan3 x
What will be an ideal response?
Mathematics
If the function is one-to-one, find its inverse. If not, write "not one-to-one."f(x) = x3 - 8
A. not a one-to-one
B. f-1(x) = 
C. f-1(x) = 
D. f-1(x) = 
+ 8
Mathematics
Evaluate the expression.
A. 61
B. - 
C. 
D. Undefined
Mathematics