Solve the problem.The voltage E in an electrical circuit is given by E = 1.3 cos 100?t, where t is time measured in seconds. Find the period.
A. 50?
B. 
C. 
D. 50
Answer: C
Mathematics
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Find the indicated quantity.d, when a1 = 14 and a8 = 42
A. 4 B. 8 C. 5 D. 2
Mathematics
Find the missing value and write a conclusion.20% of what number is 65 ?
A. 20% of 3250 is 65. B. 20% of 32.5 is 65. C. 20% of 13 is 65. D. 20% of 325 is 65.
Mathematics
At the given point, find the slope of the curve, the line that is tangent to the curve, or the line that is normal to the curve, as requested.3x2y - ? cos y = 4?, slope at (1, ?)
A. 0
B. ?
C. -2?
D. - 
Mathematics
Provide an appropriate response.If the sides of a triangle measure 12 m, 12 m, and 1,200 cm, what kind of triangle is it?
A. equilateral triangle B. right triangle C. scalene triangle D. isosceles triangle
Mathematics