Multiple Choice Question: If $x$ is positive and $y$ is negative, which of the following expressions is always positive?

More Old MCQ

Orphaned Multiple Choice Questions (MCQ) due to changes of exam system.

Two triangles have equal bases. The altitude of one triangle is 3 units more than its base while the altitude of the other is 3 units less than its base. If the areas of the triangles differ by 21 square units, find the altitude of the smaller triangle.
Cars A and B leave from the same town at the same time and travel in opposite directions
At 6:00 A.M., a fighter plane took off at 410 kph from an aircraft carrier, maintaining the direction of N 50° E.
A circle is described by the equation x^2 + y^2 - 16x = 0. What is the length of the chord that is 4 units from the center of the circle?
What is the number that is one half of one quarter of one tenth of 400?
A circle has its center at (3, -27). It is tangent to the line $3x + 4y - 26 = 0$. Locate the point of tangency.
A cube is 6 inches in edge. A cutting plane is passed through the midpoint of three adjacent edges. Find the volume of the smaller solid.
It is a point formed by intersecting the internal bisector of one angle of a triangle to the external bisectors of the other two angles.
A certain lotto game consists of 30 different balls numbered 1 to 30. If five balls are drawn at random without replacement, how many possible winning combinations can be made?
A Norman window has the shape of a rectangle surmounted by a semicircle.
It is a branch of engineering mechanics that deals specifically with quantifying the motion of objects in terms of displacement, velocity and acceleration.
dKi9DFQ-2 Find the maximum positive shear that could developed at the section just after point A.
Simplify and solve for y: $y = \ln \left( \dfrac{e^x}{e^{x - 1}} \right)$.
This theorem states that the volume of a solid of revolution is equal to the area of the generating region times the distance travelled by the centroid of that region.
Find the 7th term of the geometric sequence beginning with 6, 9, 27/2, …