If a/b=c/d, show that (a+b): (c+d)=+b^2))^1/2): +d^2))^1/2)

Fred has a spinner that is split into four equal sections: red, blue, green, and yellow. fred spun the spinner 688 times. which of the following would be a good estimate of the number of times the spinner lands on the green section? a. 269 b. 603 c. 344 d. 189

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

Point q is equidistant from the sides of ∠tsr. find m∠rst.