If the mean of five consecutive integers is 30, find the ...
If the mean of five consecutive integers is 30, find the largest of the numbers
28
30
32
34
Correct answer is C
Let the consecutive numbers be a, a+1, a+2, a+3, a+4
Mean = \(\frac{(a+a+1+a+2+a+3+a+4)}{5}\\
30 = \frac{5a+10}{5}\\
30 \times 5 = 5a + 10\\
5a = 150 - 10\\
5a = 140\\
a = 28 \\
∴ a + 4 = 28 + 4\\
= 32\)
Simplify \((\frac{1}{\sqrt{5} + \sqrt{3}} - \frac{1}{\sqrt{5} - \sqrt{3}}) \times \frac{1}...
Which of these equations best describes the points of intersection of the curve and the line? ...
The probabilities that John and James pass an examination are \(\frac {3}{4}\)and \(\frac {3}{5...
Make Q the subject of formula when \(L=\frac{4}{3}M\sqrt{PQ}\) ...
An equilateral triangle has a side 2 cm. Calculate the height of the triangle. ...
Solve the equation 3x\(^2\) + 25x -18 = 0...
Which one of the following gives the members of the set A1 n B n C? ...