{[ promptMessage ]}

Bookmark it

{[ promptMessage ]}

Pre-Calculus Homework Solutions 117

# Pre-Calculus Homework Solutions 117 - 3 B let x represent...

This preview shows page 1. Sign up to view the full content.

3. B; let x represent the length of the shadow. Use the Pythagorean Theorem to solve for x to the nearest foot. 12 2 ¬ 9 2 x 2 144 ¬ 81 x 2 63 ¬ x 2 8 ¬ x The shadow is about 8 feet long. 4. D 5. D; the slope of the line in Kris’s graph can be found using points (0, 3) and (4, 11). ( ( y x 2 2 y x 1 1 ) ) 1 4 1 0 3 or 2 The slope of the line in Mitzi’s graph is the same as the slope of the line in Kris’s graph, or 2. So the line in Mitzi’s graph has equation y 2 x b , or 2 x y b . The only answer of this form is 2 x y 1, so b 1 or b 1. 6. B; m EFG ¬ m FDE m FED 9 x 7 ¬ 5 x 5 x 9 x 7 ¬ 10 x 7 ¬ x m EFG 9(7) 7 70 7. C; ABD CBD , so CBD is a flip of ABD over the x -axis. Corresponding points have the same x -coordinate and opposite y -coordinates. 8. A; if we know BC CE then ACB DCE by SAS. 9. 3 s 2 (2 s 3 7) 6 s 5 21 s 2 10. Brian’s second statement was the converse of his original statement. 11. Explore: Creston ( C ) and Dixville ( D ) are endpoints of the base of an isosceles triangle formed by Creston, Dixville, and Milford. We are
This is the end of the preview. Sign up to access the rest of the document.

{[ snackBarMessage ]}