If x is jointly proportional to the cube of y and the fou...
If x is jointly proportional to the cube of y and the fourth power of z. In what ratio is x increased or decreased when y is halved and z is doubled?
4:1 increase
2:1 increase
1:1 no change
1:4 decrease
3:4 decrease
Correct answer is B
x∝y3z4
x=ky3z4
If y is halved and z is doubled, we have
x=k(12y)3(2z)4
x=k(y38)(16z4)\)
x=2ky3z4
∴
The bearing of Y from X is 060o and the bearing of Z from Y = 060o. Find the bearing of X from Z...
In the figure, PQST is a parallelogram and TSR is a straight line. If the area of \bigtriangleup...
Calculate the value of x and y if (27x ÷ 81x+2y = 9 ,x + 4y = 0...
In the diagram, IG is parallel to JE, JEF = 120o and FHG = 130o, fins the angle marked t...
If log104 = 0.6021, evaluate log1041/3...
The remainder when 6p3 - p2 - 47p + 30 is divided by p - 3 is...
Which of the following angular inequalities defines an obtuse angle? ...