Find the measure of ∠c if ∠a = 3 2 x + 20 ∠b = 7 2 x + 20 ∠c = 5 2 x + 40 ∠d = 3 2 x + 10 a) 65° b) 76° c) 95° d) 115°

Use the distributive law to multiply. 3(4x + 5y + 6)

The distribution of the amount of money spent by students for textbooks in a semester is approximately normal in shape with a mean of $235 and a standard deviation of $20. according to the standard deviation rule, how much did almost all (99.7%) of the students spend on textbooks in a semester?

The distance of a chord from the centre of a circle is 12cm and the lenght of the chord is 10cm. find the radius of the circle