Solving math problems to the second power, -10b2*-5b2=

-10b2*-5b2=

Circles, Two tangents TP and TQ are drawn to a circle with center O from an...

Two tangents TP and TQ are drawn to a circle with center O from an external point T.prove that angle PTQ=angle 2 OPQ

Algbra, (a+b)''2

(a+b)''2

Statistics, find probability

find probability

Invariant lines under transformation, What lines are invariant under the tr...

What lines are invariant under the transformation [(103)(01-4)(001)]? I do not know where to even begin to solve this. Please help!!

Trignometry, tan50-sec50

tan50-sec50

Arithmetic sequences and series,

Find where the breakdown occurred and his original speed, A cyclist, after ...

A cyclist, after riding a certain distance, stopped for half an hour to repair his bicycle, after which he completes the whole journey of 30km at half speed in 5 hours.  If the bre

Discrete mathematics, how to calculate double summations

how to calculate double summations

What is the probability of tossing a head, Q. What is the probability of to...

Q. What is the probability of tossing a head? List the sample space for tossing a coin once. What is the probability of tossing a head? Solution:  If you tossed a coin once