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marusya05 [52]
3 years ago
12

It takes Li 1 hour to drive 65 miles, 2 hours to drive 130 miles, and 3 hours to drive 195 miles. Write an equation to represent

the relationship between the distance and time. How many miles can he drive in 5 hours?
Mathematics
1 answer:
Black_prince [1.1K]3 years ago
3 0

Answer:he can drive 325 miles in 5 hours and the equation would be distance=65*(time)

Step-by-step explanation:

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3 years ago
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A parallelogram has sides 20cm and 30cm with an angle of 80 between the two sides. What is the length of each of the diagonals?
Lelu [443]

Answer:

length of diagonals are BD = 33.039 cm and AC = 38.84 cm

Step-by-step explanation:

given,

sides of parallelogram is 20 cm and 30 cm

Angle between them is 80°. opposite angle of parallelogram are same the opposite angle is same.

other angle  = 360° - 80° - 80° + 2 x = 200

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Using cosine law

c² = a² + b² - 2ab cos γ

In ΔDAB

BD² = 30² + 20 ² - 2 × 30 × 20 cos 80°

BD = 33.039 cm

now in ΔADC

c² = a² + b² - 2ab cos γ

AC² = 20² + 30² - 2 × 30 × 20 cos 100°

AC = 38.84 cm

length of diagonals are BD = 33.039 cm and AC = 38.84 cm

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3 years ago
Sheri is saving up for college textbooks. She has saved $840, but she needs at least $2,460 to cover the cost of the textbooks.
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Answer:

A.  x ≥ 60

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Step-by-step explanation:

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Answer:

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