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sdas [7]
3 years ago
12

Help! the file is attached

Mathematics
1 answer:
Natalija [7]3 years ago
4 0

Answer:

  • 924/5 ft/s
  • 369.6 ft

Step-by-step explanation:

126 mi/h = (126 mi)/(1 h)·(5280 ft)/(1 mi)·(1 h)/(3600 s) = (126·5280/3600) ft/s

126 mi/h = 184.8 ft/s = 924/5 ft/s

__

In 2 seconds, the parachutist falls ...

  (184.8 ft/s)·(2 s) = 369.6 ft

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inn [45]

Answer:

The first car was traveling 70 mph, while the second was driving 50 mph.

Step-by-step explanation:

Set the cars as a proportion:

\frac{210}{x + 2}  =  \frac{150}{x}

X represents the speed of the second car. By cross multiplying, you get the following equation:

210x = 150(x + 20)

You solve by distributing 150 to get 210x = 150x + 3000.

Solving for x gets you 50.

That means the first car was going at 50 mph. Adding 20, you get 70 as the speed for the second car.

4 0
2 years ago
Factor completely: 10ax + 5bx - 8ay - 4by
kiruha [24]
The answer is (5x - 4y)(2a + b)

10ax + 5bx - 8ay - 4by = 10ax + 5bx - (8ay + 4by) =<span>
                                      = 5x * 2a + 5x * b - (2a * 4y + b * 4y) =
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                                      = (5x - 4y)(2a + b)</span>
4 0
3 years ago
The base area of a square-based prism is 25 ft squared. One of the lateral faces of the prism is 30 ft squared. What is the surf
telo118 [61]

Answer:

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Step-by-step explanation:

Surface area = 4*lateral faces + 2*bases

  • A = 4*30 + 2*25 = 170 ft²
7 0
3 years ago
PLEASE HELP! 40 POINTS! state the value only do not use units. do not write x= in your response. Thank you
12345 [234]

Answer:

y=43 (alternate angle)

in triangle ADC

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x=180-97-43

x=40

8 0
3 years ago
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Thepotemich [5.8K]
The answer for your problem is shown on the picture.

8 0
3 years ago
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