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hjlf
3 years ago
10

A jet is coming in for a landing. It's currently 25,000 feet in

Mathematics
1 answer:
Mariana [72]3 years ago
8 0

The angle of depression is 29.0521°. So it is a safe landing.

Step-by-step explanation:

Step 1:

The plane is flying at a height of 25,000 feet and 45,000 feet away from the landing strip. Assume it lands with an angle of depression of x°.

So a right-angled triangle can be formed using these measurements. The triangle's opposite side measures 25,000 feet while the adjacent side measures 45,000 feet. The angle of the triangle is x°.

To determine the value of x, we calculate the tan of the given triangle.

tanx = \frac{opposite side}{adjacent side}.

Step 2:

The length of the opposite side = 25,000 feet.

The length of the adjacent side = 45,000 feet.

tan x = \frac{25,000}{45,000} = 0.5555.

So x = 29.0521°. Since x < 30°, it is a safe landing.

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tess has 100 dimes and quarters , if the total of the coins is $21.40 how many of each of the coins does she have ?? Using subst
Zanzabum

Answer: 24 and 76

Step-by-step explanation:

{

d

+

q

=

100

10

d

+

25

q

=

2140

From the first equation, we have  

d

=

100

−

q

Substituting that into the second equation, we have

10

(

100

−

q

)

+

25

q

=

2140

⇒

1000

−

10

q

+

25

q

=

2140

⇒

15

q

=

1140

⇒

q

=

1140

15

=

76

Knowing that  

q

=

76

we can substitute that value into the first equation to obtain

d

+

76

=

100

∴

d

=

24

Thus, Sue has  

24

dimes and  

76

quarters.

4 0
3 years ago
Is the answer A ?????<br><br> I don't know, plzzzz help me
-Dominant- [34]
I think very well that it is A or B. With my experience, but you might want to keep doing research.

8 0
3 years ago
Read 2 more answers
Write an algebraic expression for the following word phase: the quotient of r and 12
blondinia [14]

The quotient of r and 12

r:12=r\div12

The quotient of r and 12 as a fraction

\dfrac{r}{12}

3 0
3 years ago
Can ya'll help me plssssss
KIM [24]

Answer: 8mph

Step-by-step explanation:

If Marco bicycles 20 miles in 2.5 hours. divide 20 by 2.5 to get the average rate.

20/2.5 = 8

(Don't forget to add units)

8mph

4 0
1 year ago
Sylvia bought 20 cases of paper from an office supply store. Each case cost $41.50, including tax. What was the total cost for t
Svetllana [295]
$830.00 for 20 cases of paper

41.50 x 20= 830
3 0
2 years ago
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