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stepladder [879]
2 years ago
8

Can someone please help?​

Mathematics
2 answers:
ser-zykov [4K]2 years ago
8 0

Answer:

parallelogram formula is: a=bh

Rectangle formula is: a=lw

triangle formula is: A = 1/2 bh

trapezoid formula is: A = ½ (a + b) h

Step-by-step explanation:

iris [78.8K]2 years ago
4 0

Answer:

  • Paralellogram's area would be A = bh (or base times height)
  • Rectangle or square would be A = lw (length times width)
  • Triangle would be A = 1/2 bh (basically divide the base x height by 2)
  • Trapezoid would be A = 1/2 (a+b)h (or for me I do base 1 which is a and base 2 which is b times height and then divide by 2 or division then multiplication first)

Step-by-step explanation:

I hopes this helped :)

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Answer:

(A) 120 mph

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Step-by-step explanation:

Given that,

New York and California are 2900 miles apart,

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Assuming that the path between the starting point in New York and the ending point in California is straight, so the given distance of 2900 miles is actually the shortest distance which is the displacement between the source and destination.

So, the given speed on the straight path is actually the velocity.

Assuming that the velocity is positive in the direction from New York towards California.

(A) So, the velocity of train A (towards California)  = 120 mph.

(B) The velocity of train B (towards New York) = -120 mph.

(C) Bothy are moving towards each other, so the relative velocity between them is 120+120=240 mph, and the initial distance between them is 2900 miles.

When they meet, the displacement between them becomes zero, displacement covered= 2900-0=2900 miles.

So, the time, t, taken to cover the displacement 2900 miles with a relative velocity of 240 mph is

t=\frac{2900}{240} [as time= displacement / relative velocity]

\Rightarrow t=12\frac{1}{12} hours

=12 hours 5 minutes.

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