I
r=y
15 r-3
6
If P varies jointly as q, r and s - assume this is in direct proportion, then P ∝ qrs so P = kqrs where k is a constant.70 = k x 7 x 5 x 4 = 140k : k = 140/70 = 0.5When q = 2, r = 15 and s = 7 then,P = 0.5 x 2 x 15 x 7 = 105
1 only as 3 & 5 r prime numbers.
21 4t2+6r-tr 4[-3]2+6[5]-[-3][5] 8[-3]+30-[-15] -24+30+15=21
r = 3 s = 5 t = 6 rs = 3x5 = 15 rt = 3x6 = 18 st = 5x6 = 30
175 / 80 = 2 r 15 80 / 15 = 3 r 5 15 / 5 = 3 r 0 gcf of 80 and 175 is 5.
15 and 24, respectively.
6 = F 15 = O 18 = R 7 = G 5 = E 20 = T Therefore, the word represented by that code is "forget".
r=y
15 r-3
15 1*15 3*5 factor:1,3,5,15
If: 5/6r = 2/3 then r = 5/4 or 1.25
24
if r=5z and 15z =3 then r=10y
3+10-r+6r = -3+9r+0 13+5r = -3+9r 16 = 4r r = 4