the bisector of the angle formed by the lines
the point of intersection of the two lines
A cone, with two intersecting lines as slant height
A circle, with the point of intersection of the two lines as the center
Correct answer is A
No explanation has been provided for this answer.
14.67cm
42.67cm
101.33cm
543.33cm
Correct answer is C
The perimeter of the sector \(=2r+\frac{\theta}{360}\times 2\pi r \\
\Rightarrow 28 + \frac{300}{360} \times \frac{2}{1} \times \frac{22}{7}\times \frac{14}{1} = \frac{220}{3}+28\\
73.133+28=101.33cm\)
77cm2
227cm2
297cm2
374cm2
Correct answer is C
T.S.A of s closed cylinder = \(2\pi r(r+h)\\
=\frac{2}{1}\times \frac{22}{7} \times \frac{7}{2}\left(\frac{7}{2}+\frac{10}{1}\right)=\frac{22}{1}\left(\frac{27}{2}\right)=27\times 11=297cm^2\)
Find the mean of the numbers 1, 3, 4, 8, 8, 4 and 7
4
5
6
7
Correct answer is B
mean \(=\frac{1+3+4+8+8+4+7}{7}=\frac{35}{7}=5\)
Given that the root of an the equation \(2x^2 + (k+2)x+k=0\) is 2, find the value of k
-4
-2
-1
\(-\frac{1}{4}\)
Correct answer is A
Substituting for x in the equation
\(2(2)^2 + (k+2)2+k = 0 \Rightarrow 8 +2k + 4 + k =0 \Rightarrow 3k =-12; k=-4\)