Xavier is one year more than twice the age of Youji. Four years ago, Xavier was three times as old as Youji. Which system of equations below could be used to solve for x , Xavier's present age, and y , Youji's present age? X = 2y + 1 x + 4 = 3(y + 4) x = 2y + 1 x – 4 = 3(y – 4) x = 2(y + 1) x + 4 = 3(y + 4) x = 2(y + 1) x – 4 = 3(y – 4)

answer:

1. 0.04

2. 0.15

step-by-step explanation:

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john earns $14.00 for two hours of work.

answer rather than having to add and subtract the measurements of the semi-circle, notice that the semicircle to the left of ad is actually identical in area to the blank semicircle-shaped space to the left of bc. so if we transferred the red semicircle into the blank space, we would end up with a square of side length 24 cm. the area of a square is s^2 = 24^2 = 676 cm^2.

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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