Solve the problem.Use the formula R = log 
+ B to find the intensity R on the Richter scale, given that amplitude a is 368 micrometers, time T between waves is 3.1 seconds, and B is 3.1. Round answer to one decimal place.
A. 7.9
B. 2.1
C. 5.2
D. 8.3
Answer: C
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Find the missing value and write a conclusion.12% of what number is 579?
A. 12% of 0.14 is 579. B. 12% of 48,250 is 579. C. 12% of 14 is 579. D. 12% of 4825 is 579.
Provide an appropriate response.The two triangles shown below are congruent. The vertices corresponding to A, B, and C (in order) are 
.
A. Y, X, and Z B. X, Y, and Z C. Y, Z, and X D. Z, X, and Y
Provide an appropriate response.In the ellipse 
+ 
= 1, what is the equation of the horizontal axis of symmetry? The vertical axis of symmetry?
A. Horizontal: y = 6; Vertical: x = -3 B. Horizontal: y = 3; Vertical: x = 6 C. Horizontal: y = 3; Vertical: x = -6 D. Horizontal: y = -3; Vertical: x = 6
Decide whether the following is an expression or an equation. If it is an expression, simplify it. If it is an equation, solve it.
= -1
A. Equation; 24
B. Expression; - 
C. Equation; -24
D. Expression; 