Answer:
1. AC is perpendicular to BD
1. Given
2. ACB is a right angle
2. Definition of perpendicular lines
3. Triangle ACB is a right triangle
3. Definition of right triangles
4. Angles 1 and 3 are complementary
4. Interior angles of a triangle add up to 180 degrees (Triangle Interior Angle Sum Theorem), and m<ACB = 90 degrees (definition of right angles), so m<1 + m<3 = 90 degrees (subtraction property of equality). By the definition of complementary angles, angles 1 and 3 are complementary.
The selling price will be $232 if he applies a 45% markup.
Step-by-step explanation:
Cost of each stereo = $160
Mark up = 45%
Amount of mark up = 
Amount of mark up = 
Selling price = Cost of stereo + mark up
Selling price = 160 + 72 = $232
The selling price will be $232 if he applies a 45% markup.
Keywords: addition, markup
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Answer:
a
Step-by-step explanation:
because is a ok yo12222122221112w
6 7/8 -> 55/8 /5= 11/8*6= 66/8 /2 = 33/4
6. 18
7. 40
8. 36
9. 10
10. 24
11. 21
12. 8/18=4/9
13. 24/35(cannot be simplified)
14. 9/20(cannot be simplified) hope this helps
