4 years ago

Can someone help me with this question it is so confusing

1 answer:

3 0

we know it takes 20lbs of Olive to make 3 liters of oil, we also know that the orchard for a whole year gets 3000 lbs, how much oil is there in those 3000 lbs for the year?

$\bf \begin{array}{ccll} \stackrel{olive}{lbs}&\stackrel{olive~oil}{liters}\\ \cline{1-2} 20&3\\ 3000&x \end{array}\implies \cfrac{20}{3000}=\cfrac{3}{x}\implies \cfrac{1}{150}=\cfrac{3}{x}\implies x= 450$

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Which of the following are the coordinates of point F prime , the image of point F, after a rotation of 90° about the origin?

Vadim26 [7]

There are 2 possibilities:

if F is rotated <span>90° about the origin in the clockwise (negative) direction, the image is the point F'(3, 0), as shown with the red line segments.

</span>if F is rotated 90° about the origin in the counterclockwise (positive) direction, the image is the point F'(-3, 0), as shown with the green line segments.

both 1 and 2 are possible.

Remark: A rotation of point F, it the movement of F in a circle with center O and with radius OF.