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mojhsa [17]
3 years ago
11

Solving special systems.

Mathematics
1 answer:
Trava [24]3 years ago
6 0

Answer:

The system has no solutions

Step-by-step explanation:

Here, we want to solve the given equation systems

we can simply rewrite the second equation as;

y = 7-8x

So, let’s equate the two y

-8x + 6= 7-8x

As we can see, we have -8x on both sides of the equation and this means that there is no solution to system

This is because no value of x will make it that the addition of 6 to -8x will

be same as that of adding 7

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To approach the runway, a pilot of a small plane must begin a 10° 10 ° descent starting from a height of 1983 feet above the gro
Lubov Fominskaja [6]

Answer:

2.2 miles.

Step-by-step explanation:

Please find the attachment.

Let x be the distance between runway and the airplane, where plane start the approach.

We have been given that to approach the runway, a pilot of a small plane must begin a 10° descent starting from a height of 1983 feet above the ground.

We can see from our attachment that angle DAC is equal to angle BCA (by alternate interior angles).

Side length AB is opposite side and x is hypotenuse for our given angle. Since Sine represents the relation between the hypotenuse and opposite of right triangle, so we will use sine to find the length of x.

\text{Sin}=\frac{\text{Opposite}}{\text{hypotenuse}}

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x=\frac{1983}{\text{Sin}(10^o)}

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Since length of x is in feet, let us convert our answer into miles.

1 mile = 5280 feet.

Let us divide length of x by 5280 to get our answer in miles.

11419.6418680692448271\text{ Feet}=\frac{11419.6418680692448271\text{ feet}}{\frac{5280\text{ feet}}{\text{miles}}}

11419.6418680692448271\text{ Feet}=\frac{11419.6418680692448271\text{ feet}}{5280}\times \frac{\text{ miles}}{\text{ feet}}

11419.6418680692448271\text{ Feet}=\frac{11419.6418680692448271}{5280}\times \text{ miles}

11419.6418680692448271\text{ Feet}=2.162810959\text{ miles}\approx 2.2\text{ miles}

Therefore, the distance between the runway and the airplane where it start this approach is 2.2 miles.

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