ha dois números em que a mitade do quadrado é igual a 7 vezes o número m menos 20 quais números são esses​

Find the value of x for which the lines are parallel.

Aparticular telephone number is used to receive both voice calls and fax messages. suppose that 25% of the incoming calls involve fax messages, and consider a sample of 25 incoming calls. (a) what is the expected number of calls among the 25 that involve a fax message?

What value is a discontinuity of x squared plus 8 x plus 4, all over x squared minus x minus 6?