Jackie is building a doll house with a scale of 1 inch equals 12 inches. she wants to put a sofa in the doll house living room. if a full size sofa is 72 inches, how long will the doll house sofa be?

Find the value of 1715⋅211.though these numbers aren't quite as nice as the ones from the example or the previous part, the procedure is the same, so this is really no more difficult. give the numerator followed by the denominator, separated by a comma.

Give the equations of two different lines that are perpendicular to the line 3x + 4y = 7.

Sanya noticed that the temperature was falling at a steady rate of 1.4 degrees every hour from the time that she first checked her outdoor thermometer. by 6 a.m., the temperature had fallen 21 degrees. which expression can you use to find how many hours earlier she had first checked the thermometer?