Solve the problem.If a single pane of glass obliterates 15% of the light passing through it, then the percent P of light that passes through n successive panes can be approximated by the equation P = 100e-0.15nHow many panes are necessary to block at least 50% of the light?
Fill in the blank(s) with the appropriate word(s).
5 panes
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Find the Cartesian coordinates of the given point.
A. (-10
, -10)
B. (-10, -10
)
C. (10
, -10)
D. (10, -10
)
Identify the pairs of complementary or supplementary angles, as indicated.Complementary
A. ?BCD & ?DCE; ?ACF & ?FCE B. ?FCB & ?FCA; ?BCD & ?DCA C. ?BCE & ?ECA D. ?ECF & ?DCE
Solve the problem.If friction is ignored, the time t (in seconds) required for a block to slide down an inclined plane is given by the formula t = 
where a is the length (in feet) of the base and g ? 32 feet per second per second is the acceleration of gravity. How long does it take a block to slide down an inclined plane with base a = 8 when 
If necessary, round the answer to the nearest tenth of a second.
A. 1.1 sec B. 1.2 sec C. 1 sec D. 0.3 sec
Find the slope of the line.-11x - 9y = 4
A. m = - 
B. m = -99
C. m = - 
D. m = 11