in a survery of 1000 families it was found that 710 drink tea with breakfast while 230 drink coffee. the families who drink both tea and coffee are half in number compared with those who drink neither tee. what's the number of families who drink both tea and coffee?​

What could explain what happened when the time was equal to 120 minutes

An energy drink company claims that its product increases students' memory levels. to support its claims, the company issues advertisements claiming that 8 out of 10 people (chosen randomly from across the country) who tried their product reported improved memory. the missing component in this study is a .

Which of the following equations is equivalent to x/3-6/x=1