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posledela
3 years ago
10

Many supersonic jet aircraft in the past have used triangular wings called delta wings. Below is a scale drawing of the top of a

delta wing. Scale: 2 centimeters (cm) in the drawing = 192 cm on the actual wing. What is the length of the actual?

Mathematics
2 answers:
Jet001 [13]3 years ago
8 0

Answer:

it is 780 cm, but what is the area of the actual wing?

Step-by-step explanation:

Y_Kistochka [10]3 years ago
5 0
Given scale:

2 cm = 192 cm on actual wing
The length of wing on the drawing= 8.125 cm
So actual length of wing = 192/2 x 8.125
Actual length of wing= 780 cm

Answer: 780 cm

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Statements that are true for a cylinder with radius r and height h.
vampirchik [111]

Answer:

Only the second and third statements are correct:

Doubling <em>r</em> quadruples the volume.

Doubling <em>h</em> doubles the volume.

Step-by-step explanation:

The volume of a cylinder is given by:

\displaystyle V=\pi r^2h

We can go through each statement and examine its validity.

Statement 1)

If the radius is doubled, our new radius is now 2<em>r</em>. Hence, our volume is:

\displaystyle V=\pi (2r)^2h=4\pi r^2h

So, compared to the old volume, the new volume is quadrupled the original volume.

Statement 1 is not correct.

Statement 2)

Using the previous reasonsing, Statement 2 is correct.

Statement 3)

If the height is doubled, our new height is now 2<em>h</em>. Hence, our volume is:

V=\pi r^2(2h)=2\pi r^2h

So, compared to the old volume, the new volume has been doubled.

Statement 3 is correct.

Statement 4)

Statement 4 is not correct using the previous reasonsing.

Statement 5)

Doubling the radius results in 2<em>r</em> and doubling the height results in 2<em>h</em>. Hence, the new volume is:

V=\pi (2r)^2(2h)=\pi (4r^2)(2h)=8\pi r^2h

So, compared to the old volume, the new volume is increased by eight-fold.

Statement 5 is not correct.

7 0
3 years ago
The equation of a circle centered at the origin is x^2+y^2=16. what is the radius of the circle?
vekshin1

Answer:

The center is (0,0) and the radius is 4

Step-by-step explanation:

x^2+y^2=16.

The equation of a circle can be written in the form

(x-h)^2+(y-k)^2=r^2  where ( h,k) is the center and r is the radius

(x-0)^2+(y-0)^2=4^2

The center is (0,0) and the radius is 4

4 0
3 years ago
*Will mark Brainliest (10 points)*<br><br> Please explain, thanks!
MAVERICK [17]
Standard form Ax + By = C
so
<span>(y - y1) = m(x - x1)
</span>given (5, -7) and m = -1/5
so
y + 7 = -1/5(x - 5)
-5y - 35 = x - 5
x + 5y = -30

answer
d. x + 5y = -30
5 0
3 years ago
What are all real numbers greater than or equal to 0 called?
7nadin3 [17]

Answer:

Postitive numbers

Step-by-step explanation:

8 0
2 years ago
Ariana is setting up a salt-water
trapecia [35]

Answer:

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Step-by-step explanation:

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3 years ago
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