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mabel received 120 of the most popular beads for her birthday. there were 4 packages. how many beads per package were ther.
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Try this option (see the attached picture):
1. to determine an equation of line y₁, which ⊥y and includes point a(0;5);
2. to calculate intersection point of y and y₁ (point B);
3. to calculate distance between the point A and B, using vectors properties.
Algebra
Divide everything by two, or times everything by 1/2.
This is as far as you could go due to no like-terms.