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3 years ago

11

if a car travels at a speed of 25 miles per hour for t hours then travel s 45 miles per hour for m hours what does the expressio

n 25t + 45m represent

1 answer:

Pani-rosa [81]3 years ago

3 0

25t + 45m represents the total distance travelled by the car.

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3 years ago

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Alika [10]

Answer:

The distance between them is 230.65 miles

Step-by-step explanation:

Here we use the Cosine formula

$a^2 = b^2 + c^2 - 2bc\ cos\ A\\\\a^2 = 200^2 + 300^2 - 2\times 200\times 300cos50^{\circ}\\\\= 40,000 + 90,000 - 120,000cos50^{\circ}\\\\= 130,000 - 120,000 \times 0.64\\\\= 130,000 - 76,800\\\\a^2= 53,200\\\\a = \sqrt{53,200} \\\\= 230.65\ miles\ per\ hour$

Now the distance for one hour is

= 230.65 ÷ 1

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