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Solve the following, (3/4 + 2/5)^2

Firstly, get both fractions to the same demonimator 3/4 X 5/5 = 15/20. 2/5 X 4/4 = 8/20 This makes the question become (15/20 + 8/20) 2 15/20 + 8/20 = 23/20 Therefore (23/20) 2 So finaly square both top and ...
AB
Answered by Adam B. • Maths tutor
4266 Views

How do you find the gradient of a straight line?

The gradient of a straight line is the number before the x if it is in the form y=mx+c. So for y=6x+2 the gradient is 6. If the y has a factor, like 2y=6x+2, then you have to divide everything by the factor ...
HW
Answered by Hebe W. • Maths tutor
27308 Views

Show that 12 cos 30° -2 tan 60° can be written in the form square root k where k is an integer.

FIrst of all we need to understand how cos 30° and tan 60° are found. Let's think of an equilateral triangle, all three angles of the triangle are equal and 60° and each side has length 2. Let's half the tri...
AC
Answered by Asia-Marie C. • Maths tutor
12789 Views

What is the equation for calculating the surface area of a cylinder?

= 2πr 2 + πd x height (= area of the 2 circle at either end + area of rectangular surface around the cylinder)
YC
Answered by Young C. • Maths tutor
4140 Views

Shape ABCD is a parallelogram. Y is the mid-point of AB and Z is on BC such that BZ=1/2ZC. Given that AB=a and BC=b, describe, in terms of a and b: a) AC b)CY c)YZ

a) AC = a + b b) CY = -b -1/2a c) YZ = 1/2a + 1/3b
MC
Answered by Matthew C. • Maths tutor
5165 Views