Brandon has a cup of quarters and dimes with a total value of $3.80. the number of quarters is four less than twice the number of quarters. how many quarters and how many dimes does brandon have?

answer:

dimes = 8 and

quarters = 12

step-by-step explanation:

otal value = 380 cents

let dimes be x

quarters be 2x - 4

100 pennies = $1

1 dime = 10 pennies

1 quarter = 25 pennies

therefore;

$ 3.78 = 378 pennies

10x+25(2x-4)=378

10x + 50 x - 100 = 378

60 x = 378 + 100

60 x = 478

      x = 478/60

        = 7.9667

        ≈ 8

therefore;

dimes = 8 and

quarters = 12

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

answer. d.289 hope that