Answer:
1. x= -2 2. x= -5 3. x= -11/10
Step-by-step explanation:
1. 5x-3x -4+4=3x-3x+8+4 2x/2=-4/2 x=-2
2. -4x+7x +7-7=-7x+7x-8-7 3x/3=-15/3 x=-5
3. 6x+4x+7-7=-4x+4x-4-7 10x/10=-11/10 x=-11/10
Answer:
a.12/13
Step-by-step explanation:
- FORMULA: sine of an angle in a triangle is given by,

- here, in the given triangle PQR, for angle 'p'
opposite side= QR
adjacent side= PQ
hypotenuse=PR
- Therefore, sine of angle p=

- Thus, by using the above given formula, the sine of angle p in the triangle PQR is 12/13.
- hence, the trigonometric formulas as mentioned above should be remembered for sure to solve these type of problems
Answer: $48
If she tipped $8.00 then the original bill was $40, and the total was $48