Simplify the expression.
- tan x
A. csc x
B. cot x
C. tan x
D. tan2 x
Answer: B
Mathematics
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Find 
.y = ?x2 + 4x
A. (?x2 + 4x) ln ? (2x + 4) B. (?x2 + 4x) ln ? C. (?x2 + 4x) (2x + 4) D. (x2 + 4x) ?x2 + 4x - 1
Mathematics
Find the percentage of data items in a normal distribution that lie between the given z-scores.z = 0.7 and z = 1.4
A. 16.12% B. 75.8% C. 24.2% D. 91.92%
Mathematics
Provide an appropriate response. A sandbox is a square of width 5 feet. How many square feet does the sandbox cover?
A. 25 ft2 B. 5 ft2 C. 20 ft2 D. 10 ft2
Mathematics
In the parallel circuit below, IR = 26 mA and IL = 21 mA. Find IT.
a. 26 + j21
b. 21 + j26
c. 26 + j5
d. 21 + j5
e. 47 + j47
Mathematics