Determiner le nombre rationnel X dans chacun des cas suivants :
1/5+1/10+1/x=11/30

22. catie is starting a babysitting business. she spent $26 to make signs to advertise. she charges an initial fee of $5 and then $3 for each hour of service. write and solve an inequality to find the number of hours she will have to babysit to make a profit. interpret the solution.!

Which expression is the factorization of x^2+10+21

What is perpendicular to y=-1/2x+11