Answer: AB = 12.5, BC = 15
<u>Step-by-step explanation:</u>
Perimeter of ΔBCD = BC + CD + BD. Since it is an isoceles triangle, then BC = CD = BD. So, Perimeter of ΔBCD = 3BC
3BC = 45
<u>÷3 </u> <u>÷3 </u>
BC = 15
Perimeter of ΔABC = AB + BC + AC. Since it is an isosceles triangle with BC as the base, then AB = AC. So, Perimeter of ΔABC = 2AB + BC
2AB + BC = 40
2AB + 15 = 40
<u> -15</u> <u> -15 </u>
2AB = 25
<u>÷2 </u> <u>÷2 </u>
AB = 12.5
Factoring the expression would be 6a(2a^2+4a-1)
Answer:
Its non linear because of the x squared. This would indicate an ever increasing answer, not one that has a constant rate. This equation would be quadratic.
Answer: 4.4 seconds
<u>Step-by-step explanation:</u>
h(t) = -16t² + 315
Since we want to find the total time the baseball is in the air, we need to find the time (t) when the ball lands on the ground --> h(t) = 0
0 = -16t² + 315
-315 = -16t²
![\dfrac{315}{16}=t^2\\\\\\\sqrt{\dfrac{315}{16}}=t\\\\\\\dfrac{\sqrt{315}}{4}=t\\\\\\\large\boxed{4.4=t}](https://tex.z-dn.net/?f=%5Cdfrac%7B315%7D%7B16%7D%3Dt%5E2%5C%5C%5C%5C%5C%5C%5Csqrt%7B%5Cdfrac%7B315%7D%7B16%7D%7D%3Dt%5C%5C%5C%5C%5C%5C%5Cdfrac%7B%5Csqrt%7B315%7D%7D%7B4%7D%3Dt%5C%5C%5C%5C%5C%5C%5Clarge%5Cboxed%7B4.4%3Dt%7D)