*i know twice as many jokes as my friend does. together we know 60 different jokes. my friend and i both know the same three jokes. how many jokes do i know?

The answer would be 40 jokes

Step-by-step explanation:

At first, it might seem there are 37 but if you do 2x+x=60 x=20 and you would know 40 jokes and they didn't ask how many jokes only you know so I am guessing it is 40 sorry if I am wrong.

the rocket cannot penetrate the ground, in a contextual sense, therefore the roots of this equation should be the domain of this function. i'll let you find the roots of this quadratic equation (hint: use the quadratic formula:  

1- c

2-a

step-by-step explanation:

mark brainliest!