you invested money in two funds. last year, the first fund paid a dividend of 9% and the second a dividend of 3%, and you received a total of $1005. this year, the first fund paid a 10% dividend and the second only 1%, and you received a total of $825. how much money did you invest in each fund?

if x decreases by 4 then y increases by 10

step-by-step explanation:

answer: option a.

step-by-step explanation:

you know that the quadrilateral opqr ( a four sided figure) is inscribed in circle. this means that all its vertices are on the circle.

then, by definition, the opposite angles of the quadrilateral are supplementary, this means that the sum of their measures is 180 degrees.

you can observe in the figure that the angles ∠opq   and the angle ∠orq   are opposite, therefore:

then, can be used to d to calculate the measure of ∠opq

more detail

step-by-step explanation: