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3 years ago

Please help!

Mathematics

1 answer:

Dmitriy789 [7]3 years ago

8 0

Answer:

%25

Step-by-step explanation:

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An airplane is flying 600 mph on a horizontal path that will take it directly over an observer. The airplane remains a constant

dezoksy [38]

<h2>Change of the distance between the observer and the airplane when X = 5 miles is 348.84 mph</h2>

Step-by-step explanation:

We have by Pythagoras theorem

Distance between the observer and the airplane² = Horizontal distance² + Altitude²

d² = h² + a²

Here we have

h = X = 5 miles

a = 7 miles

d² = 5² + 7² = 74

d =8.60 miles

$\frac{dh}{dt}=600mph\\\\\frac{da}{dt}=0$

Differentiating d² = h² + a² with respect to time

$2d\frac{dd}{dt}=2h\frac{dh}{dt}+2a\frac{da}{dt}\\\\8.60\frac{dd}{dt}=5\times 600+7\times 0\\\\\frac{dd}{dt}=348.84mph$

Change of the distance between the observer and the airplane when X = 5 miles is 348.84 mph

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4 years ago

If y varies directly as x, which equation represents when x = 36 and y = 12?

Inessa05 [86]

Answer:

y=3x

Step-by-step explanation:

6 0

3 years ago

Determine the percent of change? original: 50 new: 150.

Reptile [31]

Hi there! The percentage of change is 200%

We can find the percentage of change using the following formula:
$\frac{new-original}{original} \times 100$

When we fill in this formula, we get the following:
$\frac{150-50}{50} \times 100 = \frac{100}{50} \times 100 = 2 \times 100 = 200$

Therefore, the percentage of change is 200%

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3 years ago

Plz help with number 62, due tomorrow.

algol13

Answer:

boy this biology

Step-by-step explanation:

no math

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3 years ago

Which point lies on both y = 5x – 3 and y=-4x+6?

dmitriy555 [2]

Its A (1,2) yo you should look for a graphing calculator it helps alot all you need is to put that exact equation in and it graphs for you

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3 years ago