Vin Mwale
Newest questions posted by Vin Mwale

how many lines of symmetry does a rectangle have?

if cosine A=0•8 find sine B

tan 39°=40/AP, So AP =40/tan. in triangle AQP, angle Q= 60/sin 91°=AP/SinQ. Then bearing of Qfrom P = 30° 180°(91 angle Q).

The first three terms of GP are x+1,(x^21) and (x^21)(2x4).Calculate the value of x. Suggested solution;ar^2/ar,so r=2x4 and a=x+1. Substitute in second term(ar)=(x^21). Factorise, so x=3

If n(AuBuC)=12 and n(AuB)=8,find n(A'nB'nC). Solution n(A'nB'nC)=12 8 =4


The sixth term of GP is 16 and the third term is 2.Find the first term and common ratio. 6th term =16 3rd term=2 So ar^5=16 and ar^2=2, then divide. So r^3=8, and r^3 =2^3. Therefore r =2 and a=1/2