To find the GCF of 66 and 91 you have to find the factors of each: 66 = 1, 2, 3, 6, 11, 22, 33, 66 91 = 1, 7, 13, 91 So the only, and therefore greatest, common factor is 1.
Now we do the same with 84 and 92: 84 = 1, 2, 3, 4<span>, 6, 7, 12, 14, 21, 28, 42, 84 92 = </span>1, 2, 4<span>, 23, 46, 92 This time we have multiple common factors but the greatest common factor is 4.
Now 51 and 75: 51 = </span>1, 3<span>, 17, 51 75 = </span>1, 3<span>, 5, 15, 25, 75 The GCF is 3
Now 64 and 72: 64 = 1, </span>2, 4, 8<span>, 16, 32, 64 72 = </span>1, 2, 3, 4, 6, 8<span>, 9, 12, 18, 24, 36, 72 GCF is 8. You just look for the highest number that is the same.
First we must find the volume of the cube. This is equal to side^3. 4^3=64 cubic inches. Since the pebbles are .5 pounds per cubic inch and we assume it is packed we multiply the volume by .5 This will give 32 pounds
Part A: company a: y = 24d + 25 company b: y = 22d + 40 (vairable d = time in days) (y = cost)
Part B: Company a: y = 24 x (4) +25 y = 96 + 25 y = 121 Company b: y = 22 x (4) + 40 y = 88 + 40 y = 128 So Company A is the correct answer because it costs $121 Part C: Company a: y = 24 x (6) + 25 y = 144 + 25 y = 169 Company b: y = 22 (6) + 40 y = 132 + 40 y = 172