If x varies directly as √n and x = 9 when n = 9, fi...
If x varies directly as √n and x = 9 when n = 9, find x when n = (17/9)
4
27
√3
√17
Correct answer is D
\(x \propto \sqrt{n}\)
\(x = k \sqrt{n}\)
\(9 = k \sqrt{9} \implies 9 = 3k\)
\(k = 3\)
\(x = 3 \sqrt{n}\)
When n = 17/9,
\(x = 3 \times \sqrt{\frac{17}{9}} = \sqrt{17}\)
Evaluate correct to 4 decimal places 827.51 x 0.015 ...
The chord ST of a circle is equal to the radius, r, of the circle. Find the length of arc ST. ...
No. of days 1 2 3 4 5 6 No. of students 20 x 50 40 2x 60 The distribution above shows the n...
Simplify: \(\frac{x^2 - y^2}{(x + y)^2} \div \frac{(x - y)^2}{(3x + 3y)}\)...
The shadow of a pole 5√3m high is 5m. Find the angle of elevation of the sun. ...