1. Mathematics - Q&A
160 questions found
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60 mm expressed as a percentage of 3 meters is
- 0.5%.
- 1.8%.
- 2%.
How do you work this out?
Choose the correct statement
- cosec^2 * x - cot^2 * x = 1
- sec^2 * x + tan^2 * x = 1
- cos^2 * x - sin^2 * x = 1
Can anyone explain this?
A blueprint shows a hole of 0.3751 to be drilled. What fraction size drill bit is most nearly equal?
- 3/16
- 5/16
- 3/8
how to solve
Which of the graphs shown is given by the equation; y = 2x^3 + 4x + 3?
- a
- b
- c
how does it come to c?
An engine of 96 horsepower is running at 75% power. What horsepower is being developed?
- 62
- 72
- 168
what is the answer to above problem
If cos 60 is 0.5, what is sin 30?
- 0.5
- 0.866
- None of the above.
explain pls thx
If y/x = 4 and y = 5 then x =
- 4/5.
- 1 1/4.
- 20.
if y/x=4 and y=5
then 5/x=4 , therefore x=4x5 no?
What is the characteristic of 5.74?
- -1
- 0
- 1
whats 5.74 ?
Given 43-x = 21, find the value of x.
- x=43-21
- x=43/21
- x=43+21
Why?
The plot of the equation y = 1/x is a
- straight line.
- curve with one turning point.
- curve with two turning points.
can anybody make me understand this .Thanks
-3 [8 - 3 (5 + square_root(9)) - ( 7 - 9)] =
- -42
- 42
- 60
Explain?
24/0 (twenty four divided by nothing) is
- nothing.
- infinity.
- 24.
surely 24 divide this by nothing you still have 24 whole as a figure rather than infinity???
What is the curved surface area of a cone if the base is 8cm diameter and the slant height is 10cm?
- 40pi
- 80pi
- 120pi
the height mentioned here is slant height?
What is the volume of metal used in the pipe shown?
- 45pi cm^3
- 4500pi cm^3
- 18000pi cm^3
how did u get this answer
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.
how??
What is the area of a ring with an outer diameter of 90 inches and an inner diameter of 80 inches?
- 325 * pi
- 425 * pi
- 435 * pi
how to solve it
15.4 / 2 - 2 (4.6 - 15.7) =
- -14.5
- 26.5
- 29.9
Please explain.
How far does a wheel of 7m radius travel in one revolution?
- 14m
- 22m
- 44m
2 pgreck r=14pgrek. So is 43.96!!!!
log 100+2 =
- 4
- log 102
- log 200
Please explain log100+2 is 4
What is log6^3?
- 6log3
- log18
- 3log6
please explai log63 is 3log6
The process of removing roots from the denominator of fractions is called what?
- Rationalizing the denominator.
- Squaring the denominator.
- Derooting the denominator.
i'm confuse right now because before this the answer was squarizing the denominator. but now the answer is rationalizing the denominator. which one is the correct one?
What is the depth of water in the tank shown if the volume of water is 4000 litres?
- 50 cm
- 80 cm
- 5 m
can someone explain the calculation of this question...i can't get it..thank you so much
A sector with angle A is subtended to the centre point of a circle. Area of the sector is proportional to
- angle A.
- cos A.
- sin A.
Explain
The ratio of 6:4 can also be expressed as
- 64%.
- 66%.
- 150%.
Can anyone tel me this how?
Dividing 4 1/2 by 2 1/6 gives the answer of
- 54/26.
- 25/12.
- 21/3.
pls anyone.. calculate for goodness sake