Answer:
14 sq cm
Step-by-step explanation:
7 × 4 = 28
28 ÷ 2 = 14
brainliest?
Answer:
penis
Step-by-step explanation:
Answer:
8. rhdvevshbsbbdbdsbsbzjzjd
Answer: 18
Step-by-step explanation: 16/2 = 8 - 6 = 2 x 10 = 20 - 2 = 18, sorry if i'm incorrect.
The equations
![2x^2+9x-5=0](https://tex.z-dn.net/?f=2x%5E2%2B9x-5%3D0)
and
![2\left(t-\dfrac12\right)^2+9\left(t-\dfrac12\right)-5=0](https://tex.z-dn.net/?f=2%5Cleft%28t-%5Cdfrac12%5Cright%29%5E2%2B9%5Cleft%28t-%5Cdfrac12%5Cright%29-5%3D0)
are really the same, we're just setting
, or
.
![2x^2+9x-5=(2x-1)(x+5)=0\implies x=\dfrac12,x=-5](https://tex.z-dn.net/?f=2x%5E2%2B9x-5%3D%282x-1%29%28x%2B5%29%3D0%5Cimplies%20x%3D%5Cdfrac12%2Cx%3D-5)
So we get
![t=\dfrac12+\dfrac12=1,t=-5+\dfrac12=-\dfrac92](https://tex.z-dn.net/?f=t%3D%5Cdfrac12%2B%5Cdfrac12%3D1%2Ct%3D-5%2B%5Cdfrac12%3D-%5Cdfrac92)