A circle with centre O and radius 4.5 m has a tangent drawn at T as shown in the diagram. If OD = DC, then what is the length of the tangent segment TC to the nearest hundredth. - I'm having tons of trouble with this question.

You decide instead to take the train there. the train will take 135 minutes. convert this into hours and minutes.

60 2(x + 2) in the diagram, gef and hef are congruent. what is the value of x?

Answer asap ill give ! ’ a sample of radioactive material decays over time. the number of grams, y , of the material remaining x days after the sample is discovered is given by the equation y = 10(0.5)^x. what does the number 10 represents in the equation? a. the half-life of the radioactive material, in days b. the amount of the sample, in grams, that decays each day c. the time, in days, it will take for the samples to decay completely d. the size of the sample, in grams, at the time the material was discovered