1. Mathematics - Q&A

A line to create a sector from the centre of a circle is a

• radius.
• diameter.
• chord.

The specific torque loading for a bolt is 50 lbs.ins but an extension of 2 is needed to reach the bolt in addition to the 8 torque wrench. What will the actual reading?

• 40 lb.ins.
• 54 lb.ins.
• 60 lb.ins.

101110 in binary is

• 46 base 2.
• 46 base 8.
• 46 base 10.

What is the characteristic of 5.74?

• -1
• 0
• 1

An aircraft travels 2150 nautical miles in 2 hours 30 minutes. What is the average speed of the aircraft?

• 550 knots
• 600 knots
• 860 knots

What is the characteristic of 5.74?

• -1
• 0
• 1

3 3/4 + 4 2/3 =

• 7 5/12
• 7 5/7
• 8 5/12

Find the area of the triangle shown below:

• 6 cm^2
• 9 cm^2
• 12 cm^2

An aircraft flies 1350nm in 2 hrs 15 minutes. What is the average speed?

• 600kts
• 650kts
• 850kts

The y intercept of 4y = 4x + 8 is

• 2.
• 4.
• 8.

Starting from zero amplitude, the cosine curve repeats itself between

• -180 and 180 degree.
• -90 and 270 degrees.
• 0 and 360 degree.

An aircraft flies 1350nm in 2 hrs 15 minutes. What is the average speed?

• 600kts
• 650kts
• 850kts

For an equation 2y = 5x + 3 what is the gradient?

• 3/5x
• 5/2
• 5x+3/2

What is the square root of 4 raised to the fifth power?

• 32
• 64
• 128

A quadratic equation has the real roots x=6 and x=9. Determine the equation which is satisfied by these roots.

• x^2 -54x+15=0
• x^2 -15x+54=0
• x^2 +15x-15=0

120 out of 125 bolts produced are of an acceptable tolerance. What percentage of the bolts are not acceptable?

• 4%
• 5%
• 25%

What is 11110001 base 2 in Octal?

• 72
• 361
• 684

If 2x^2 + kx-8 = 0 has two equal real roots, then

• k is an imaginary number.
• k=+/-8.
• k=-8.

In a right-angled triangle the other two angles are both 45 degrees. The length of the opposite side can be calculated by

• cos 45 degrees x length of the adjacent side of the triangle.
• sin 45 degrees x length of the adjacent side of the triangle.
• sin 45 degrees x length of the hypotenuse side of the triangle.

Find the value of 5/8 of 4/5.

• 1/2
• 3/4.
• 25/32

15.4 / 2 - 2 (4.6 - 15.7) =

• -14.5
• 26.5
• 29.9

What is the equation of the graph shown?

• y = -2.
• x = -2.
• y = 2x.

The y intercept of 4y = 4x + 8 is

• 2.
• 4.
• 8.

(6 - 2) - (6 - 9) / (-3 + (-3))

• 3 1/2.
• 4.
• 4 1/2.

A sphere with a radius of 2 cm has a surface area of

• 8pi cm^2.
• 16pi cm^2.
• 64pi cm^2.