Jonathan counted a total of 40 white cars and
yellow cars. There were 9
times as many white cars
as yellow cars. How
many white cars did
Jonathan count?
Create a bar model and
solve.

36 White cars

Step-by-step explanation:

total of 40 white cars and yellow cars"      means     40 = W + Y

 "9 times as many white cars as yellow cars"   means  9Y = W

   9W + 9Y = 360        (first equation; multiply (W+Y=40) by 9 to eliminate Y)

   W   - 9Y  = 0           (carefully revise the second equation)

    (Elimination method:  add the equations)

   10W      = 360

      W  =  36       Ans:  36 White cars

Checking (very important):

   40 = W + Y

   40 = 36 + Y

   4 = Y

 is    9(4) = 36

        36 = 36

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

step-by-step explanation:

ok so im not 100% sure but you would start by adding 5.1t and 1.9t beacuse they have the same variable. that is 7t.   then add -3.6 + 1.2 which is -2.4

so then keep that as -2.4 + 7t. i apologize if this is incorrect. best luck on your test < 3