One issue of a journal has 3 full-page ads and
5 half-page ads, generating $6680 in
advertising revenue. The next issue has 4
full-page ads and 4 half-page ads, resulting in
advertising revenue of $6920. Determine the
advertising rates in this journal for full-page
and half-page ads.

x=985 y= 745

Step-by-step explanation:

x=full page

y=half page

3x+5y= 6680

4x+4y= 6920

-4(3x+5y= 6680)

3(4x+4y= 6920)

  -12x-20y= -26,720

+   12x+12y= 20,760

          -8y= -5,960

divide by -8 on both sides

y= 745

plug it in for y in one if the original equations

3x + 5(745) = 6680

3x + 3,725 = 6680

     -3,725    -3,725

3x = 2,955

divide by 3 on both sides

x= 985

1     3    

step-by-step explanation:

hopefully im right

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