Mathematics: Acar is 200 km from its destination after an hour and 80 km from its destination after 3 hour

Acar is 200 km from its destination after an hour

Ответ:

akeemedwards12

24.05.2020

200 - 80 is equal to 120. So the car traveled 120 km in 3 hours. It travels at an average of 120/3 = 40 km/hr, and will reach its destination in 2 hours.

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Ответ:

Perez9126

21.03.2023

Mathematics

Step-by-step explanation:

ΔADB is a right angled triangle. So, use Pythagorean theorem.

Altitude² = hypotenuse² - base²

= (2√5)² - (3√2)²

= 2²* (√5)² - 3²*(√2)² = 4*5 - 9*2 = 20 - 18 = 2

Altitude = √2

Base of ΔABC = 3√2 + √2 = 4√2 cm

Area = $\dfrac{1}{2}bh$

$= \dfrac{1}{2}*4\sqrt{2}*\sqrt{2}\\\\\\=\dfrac{1}{2}*4*\sqrt{2*2}\\\\\\=\dfrac{1}{2}*4*2\\\\= 4 cm^{2}$

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Acar is 200 km from its destination after an hour and 80 km from its destination after 3 hour

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