Find the angle measure given the figure is a rhombus

If 1 is divided by the sum of y& 4.the result is equal to 3 divided by 4, find the value of m

Choose the more precise measurement. 26.4 cm or 8.39 cm

The sum of the first eight terms of an arithmetic progression is 9m + 14. the fifth term of the06 progression is 2m - 6, where m is a constant.given that the first term of the progression is 26,find the value of the common difference, d and thevalue of m.