Add the numbers using the number line.-4 + 2 
A. -2
B. 6
C. 2
D. -6
Answer: A
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Find an upper bound for the magnitude |E| of the error in the approximation f(x, y) ? L(x, y) at the given point over the given region R.
at 
; R: |x| ? 0.1, |y| ? 0.1, |z| ? 0.1
A. |E| ? 9.8821 B. |E| ? 11.4193 C. |E| ? 9.2233 D. |E| ? 10.5409
Solve the problem.A railroad bridge is built over a V-shaped canyon. If the supports are 8 feet long at each end, the center support is 560 feet long, and the supports increase in length by 4 feet with each support (from 8 feet to 560 feet), what is the total length of all the supports?
A. 78,396 ft B. 78,384 ft C. 78,392 ft D. 78,388 ft
Find the equation of the line passing through the indicated two points. Write the equation in slope-intercept form.(4, -7) and (9, -9)
A. y = 
x - 
B. y = - 
x - 
C. y = 
x - 
D. y = - 
x - 
Determine whether the given events are disjoint.Being a male and being a nurse
A. Yes B. No