Answer:
- Positive at (-9, 2)
- Negative at ( -oo, -9) or (2, + oo)
Step-by-step explanation:
<u>Given function</u>
<u>Getting zero's</u>
- -2x^2 - 14x + 36 = 0
- x^2 + 7x - 18 = 0
- x = ( -7 ± √(49 +72))/2 = ( -7 ± 11)/2
- x = - 9 and x = 2
<u>As the x^2 has negative coefficient, the function is positive between -9 and 2</u>
<u>And it is negative at:</u>
- x < -9 and
- x > 2
- or
- ( -oo, -9) or (2, + oo)
Answer:
Step-by-step explanation:
=> 20 + 12k - 7k - 8
=> 20 - 8 + 12k - 7k
=> 12 + 5k
=> 12 + 5k
<u>Hence correct answer is 12</u><u> </u><u>+</u><u> </u><u>5</u><u>k</u><u>.</u>
You have to add the surface area of the base to the surface area pf the lateral faces.
Value + value = 8379.70
249.99x + 329.99*30-329.99x = 8379.70
-80x + 9899.70 = 8379.70
-80x = -1520.00
x = 19 (number of the cheaper mowers sold)
30-x = 11 (number of more expensive mowers sold)
Answer:
x = 12 radical 2 ithink these is ansewer
