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lilavasa [31]
3 years ago
12

Calling Joe 45 minutes to the airport he arrived 90 minutes before his flight departed and then he spent 17 minutes in the air o

nce he landed Collins been 20 minutes Gathering his luggage and then he drove 35 minutes is Hotel what must be the true of any expression that represents the total time that Colin Spence traveling from his house to the hotel
Mathematics
1 answer:
USPshnik [31]3 years ago
3 0

90 - 45 = 45 \\ 45 - 17 - 20 - 35
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marusya05 [52]
55/20 = 2.75
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2 years ago
Henry is 4 years younger than Linda. Linda is 20 years old. After correctly carrying out the Solve step of the five-step problem
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5 0
3 years ago
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O perímetro de um campo retangular é de 80 metros e sua area é de 320 metros quadrados. Encontre as dimensões do campo, corrija
dalvyx [7]

Answer:

Comprimento: 28.9 m; Largura: 11.1 m

Step-by-step explanation:

P = 2(C + L) = 80

A = CL = 320

2(C + L) = 80

CL = 320

C + L = 40

CL = 320

C = 40 - L

CL = 320

(40 - L)L = 320

40L - L^2 = 320

L^2 - 40L + 320 = 0

aL^2 + bL + c = 0

L = \dfrac{-b \pm \sqrt{b^2 - 4ac}}{2a}

L = \dfrac{-(40) \pm \sqrt{(-40)^2 - 4(1)(320)}}{2(1)}

L = \dfrac{40 \pm \sqrt{1600 - 1280}}{2}

L = \dfrac{40 \pm \sqrt{320}}{2}

L = \dfrac{40 \pm \sqrt{64 \times 5}}{2}

L = \dfrac{40 \pm 8\sqrt{5}}{2}

L = 20 \pm 4\sqrt{5}

L \approx 28.9 or L \approx 11.1

L = 28.9

C = 40 - L = 40 - 28.9 = 11.1

Answer: Comprimento: 28.9 m; Largura: 11.1 m

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