Use a calculator to give the real number value. Round the answer to 7 decimal places.y = cot-1 (2.5181552)
A. 6.8341176
B. 2.1658824
C. 0.3780178
D. 1.1927785
Answer: C
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Simplify.(x-1y-3)-6
A. 
B. 
C. 
D. x6y18
Find an equation of the line representing the given data. Write the equation in slope-intercept form, unless otherwise indicated.A biologist recorded 4 snakes on 15 acres in one area and 19 snakes on 25 acres in another area. Let y be the number of snakes in x acres, and write the equation in general form.
A. 3x - 2y - 37 = 0 B. 3x - 2 + 37 = 0 C. x - y + 11 = 0 D. 3x - 2y + 11 = 0
Combine. Assume that all variables represent non-negative real numbers.12
- 5x
A. 17
B. 12
- 5x
C. 7x
D. 7x
A satellite is circling 145 miles above the earth, as shown in the figure. When the satellite is directly above point B, angle A is found to be 74.8º. Use this information to find the radius of the earth. Apply the rules regarding the use of significant digits when determining your answers.
?
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Earth's radius = __________ mi
Fill in the blank(s) with the appropriate word(s).