Answer:
Step-by-step explanation:
Prob at each second, a mosquito lands on your neck =0.5
Prob it bites/it lands = 0.2
Prob it does not bite/it lands = 0.8
Hence in one second prob for getting a bite = ![0.5(0.2) = 0.01](https://tex.z-dn.net/?f=0.5%280.2%29%20%3D%200.01)
i.e. 1/100 chance of getting bitten in one second
In 100 seconds number of bites ![=1](https://tex.z-dn.net/?f=%3D1)
Expected time between successive bites = 100
3x+2/5=7
3x+2/5=35/5
3x=35/5-2/5
3x=33/5
x=(33/5)/3
x=(33/5)/(3/1)
x=(33/5)*(1/3)
x=33/15
x=30/15+3/15=2+1/5
x=2.2
Answer:
im pretty sure its A
Step-by-step explanation:
Www.symbolab.com/solver/solve-for-equation-calculator
Use this