Cedric and Zelda went shopping at Price BusterCedric bought 2 jumbo rolls of aluminum foil and 3 packages of AA batteries for a total cosst of $21Zelda bought 5 identical jumbo rolls of aluminum foil and 2 identical packages of AA batteries for a total cost of $25Find the cost of 1 package of AA batteries[ only an algebraic solution will be accpetedPLEASE SHOW ALL STEPS CASUE I HAVE TO SHOW MY WORK THANKSSlt;33
You can choose between 2 part urethane spray foam insulation, which is a closed cell foam insulation that gets sprayed onto the underside of the roof deck: or Icynene, which is an open cell foam insulation that can be applies anywhere There are so many variables with insulation, that I would really need to know if your attic has walls or not, If the walls are finished or not, if the attic ceiling is finished or not, and if the attic floor is finished or notAnd finally I would need to have some idea of your budgetThe spray on foam insulation products tend to be very expensiveThey are not a DIY product.
The type of insulation that your talking about can only be done by a licensed contractorIt's a two part chemical that's mixed through a special sprayer nozzleThe foam chemicals are NOT sold to unlicensed peopleThere's a lot of prep work and it's a two person job.
If you have central hot air heatingyou can close down the warmer room heating grates just a little that will force more heat to the bed room you wantDo it a little each day until you get the results your looking forBuilder 30 years.
two equations two unknowns x aluminum foil y Batteries 2x+3y 21 5x+2y 25 Solve first equation for x 2x 21 - 3y x 10.5 - (3y/2) (three y over 2) place into second equation substituting x 5(10.5 - (3y/2)) +2y 25 52.5 - (15y/2) +2y 25 subtract 52.5 from both sides -(15y/2) + 2y -27.5 subtract 2y -(15y/2) -27.5 - 2y divide all by -1 15y/2 27.5 +2y multiply by 2 15y 55 +4y subtract 4y 11y 55 y 5 batteries cost 5 dollars double check plug into second equation and solve for x 5x + 2(5) 25 5x +10 25 5x 15 x3 plug into first equation 2(3) + 3(5) 21 6+15 21 21 21 and there you have it with a double check
