Let x = Maggie's age Let 2x - 3 = her brother's age x + 2x - 3 = 24 3x = 27 x = 9 years 2x - 3 = 2(9) - 3 = 15 years

Let L = the length of the rectangle Let (1/2)L = the width of the rectangle 2L + 2w = P 2L + 2(1/2)L = 63 2L + L = 63 3L = 63 L = 21 inches (1/2)L = (1/2)21 = 10 1/2 inches

3.75 - 2.00 = 1.75 1.75/7 = \$.25/day

-2 + -5 = -7 -4 + -3 = -7 -1 + -6 = -7

Let x = the actual distance map/actual: (3/4)/9 = 11/x Cross multiply. (3/4)x = 99 x = 99(4/3) x = 132 miles

Let n = the number -13 + 3n = 17 3n = 30 n = 10

Let s = the length of each side of the square s2 + s2 = 62 2s2 = 36 s2 = 18 s = √18 =√9√2 = 3√2 cm P = 4s P = 4(3√2) P = 12√2 cm

x2 + x2 = 82 2x2 = 64 x2 = 32 x = √32 =√16 √2 x = 4√2   A = s2 A = (4√2)2 A = 32 cm2

y = kx

24/8 = 3 bags

seconds/mgb: .5/5.8 = s/5 Cross multiply. 5.8s = 2.5 s ≅ .43 seconds

d = √[(x2 - x1)2 + (y2 - y1)2] HI = √[(8 + 2)2 + (-2 -2)2] HI =√[102 + (-4)2] HI = √(100 + 16) = √116 HI = √4√29 = 2√29   HJ =√[(-4 + 2)2 + (-3 - 2)2] HJ =  √[(-2)2 + (-5)2] HJ = √(4...

y = kxz 360 = k(4)(10) 360 = 40k 9 = k   y = (9)(5)(12) y = 540

125,000 - 116,875 =8125 8125/125,000 = .065 6.5% was the broker's percentage

Let p = the height of the pole height/shadow: p/22 = 7/4 Cross multiply 4p = 154 p = 38.5 feet

I guess you mean that the surface area of the sphere is 800 cm2. S = 4πr2 800 = 4πr2 200/π = r2    Take the square root of both sides. 7.9788 = r r ≈ 7.98 cm

x + 10 > 50

Xm = (x1 + x2)/2 -1 = (-9 + x2)/2 -2 = -9 + x2 7 = x2   ym = (y1 + y2)/2 27 = (18 + y2)/2 54 = 18 + y2 36 = y2 E(7,36)

Let x = the smaller number Let x + 12 = the larger number x + x + 12 = 74 2x = 62 x = 31 x + 12 = 43

Let b = the speed of the boat Let c = the rate of the current d = rt upstream: 12 = 8(b - c) downstream: 12 = 4(b + c) 12 = 4b + 4c 3 = b + c      3 - c = b 12 = 8b - 8c 12 = 8(3 - c) - 8c 12 = 24 - 8c - 8c -12 = -16c .75 mph...