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Kiirsty
Questions (16)
"the inside of a carton is measured and is found to be width of 40cm, length 60cm and depth 30 cm. it is to be packed 2 layers
1 answer
636 views
given f(x) = 1-2x, and g(x) = x^2+1, find:
a) g(-2) ---- i get 5 ? b) f(x+1) c) g`f(x) --- there is like a degree symbol circle
1 answer
333 views
the depreciated value, V, of a car can be calculated using V = C91-r)^n, where C is the original value, r is the rate of
1 answer
700 views
the height of a triangle is 4cm shorter than its base. if the triangle has an area of 48cm2, find the length of the base of the
1 answer
1,061 views
express: In(√x / y^2z )
thanks :)
1 answer
409 views
a) expand and simplify: (4x-3)(x+1)
i get 4x^2+x-3 ? b) factorise: 2x^2 + 13x + 15 c) find y-int, x-int and vertex of: y=
1 answer
552 views
a 3.8m ladder rests against a vertical wall and makes an angle of 38 degrees with the wall. how far does the ladder reach up the
1 answer
568 views
a) use the binomial formula to find the 5th term of the expansion (2x - 3)^8 ------ i got 90720x?
b) Find a_n, the general term
2 answers
1,627 views
a) on a map the scale used is 1: 10,000. if two towns are separated by a straight 2.5 km road, what will be the distance between
1 answer
964 views
can someone pleaaase help me with these "solve for x":
a) log_x 100 = 5 b) 3^x+5 = 81 c) log (4x + 2) - log 2 = log 6x thanks
1 answer
374 views
"the period of a pendulum, T (in seconds) varies directly with the square root of the length of the pendulum, L (in
2 answers
1,231 views
"A trucking firm has 8 trucks, some carry a load of 10 tonnes and others carry a load of 5 tonnes. When all 8 trucks are
1 answer
686 views
under certain conditions, the thrust T of a propeller varies jointly as the fourth power of it's diameter, d, and the square of
1 answer
916 views
From an aeroplane, at an altitude of 2.3km, the angle of depression of the airport is 32Degrees and the angle of depression of
1 answer
643 views
The acoustic intensity, I, of a sound wave is proportional to the square of the pressure amplitude, P, and inversely
1 answer
985 views
A 2m long ladder leaning against a wall makes an angle of 38 degrees with the wall. how far is the base of the ladder from the
1 answer
635 views
