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babymother [125]
3 years ago
10

Another one about right triangles :/

Mathematics
2 answers:
dybincka [34]3 years ago
6 0

Answer:

D

Step-by-step explanation:

x² = 35² + 18²

x² = 1225 + 324

x² = 1549

x = √1549

Ad libitum [116K]3 years ago
4 0

Answer:

\sqrt{1549}

Step-by-step explanation:

square 18 and square 35 then add together

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Komok [63]
I think the answer is 8
6 0
3 years ago
What is the y intercept of the line 2x + 3y - 9 = 0
Sindrei [870]
\hbox{y-intercept: } x=0 \\
2 \times 0+3 y -9=0 \\
3y-9=0 \\
3y=9 \\
y=\frac{9}{3} \\
\boxed{y=3}
4 0
3 years ago
Prove that if sin (2 + y) = 3 sin (x - y), then tan x = 2 tany.
nignag [31]

Answer:

The proof is given below.

Step-by-step explanation:

Given: ( the correct question and ans is as follow )

sin (x + y) = 3sin ( x - y)

To Prove

tan x = 2 tan y

Proof:

\sin (x+y) = 3\sin (x-y)

Using the identities

\sin (A+B) = \sin A.\cos B + \cos A.\sin B\\and\\\sin (A-B) = \sin A.\cos B - \cos A.\sin B\\

we get

\sin x.\cos y + \cos x.\sin y = 3(\sin x.\cos y - \cos x.\sin y)\\\sin x.\cos y + \cos x.\sin y = 3\sin x.\cos y - 3\cos x.\sin y

Now we will take sin x . cos y to the left hand side and cos x . sin y to the right hand side,we get

3\sin x.\cos y - \sin x.\cos y = 3\cos x.\sin y +\cos x.\sin y\\2\sin x.\cos y =4\cos x.\sin y\\\sin x.\cos y =2\cos x.\sin y \ \textrm{4 divide by 2}\\ \frac{\sin x}{\cos x} =2\times \frac{\sin y}{\cos y} \\\textrm{we know identity }\\\frac{\sin x}{\cos x} = \tan x\\\frac{\sin y}{\cos y} = \tan y\\\therefore \tan x = 2\tan y\ ...............{PROVED}

7 0
3 years ago
Please Help! Quickly image below with question
GrogVix [38]

Answer:

12742π Km

Step-by-step explanation:

The length of the rope is the circumference of the circle, that is

C = 2πr ( r is the radius ) Here r = 6371

C = 2π × 6371 = 12742π Km

4 0
3 years ago
Ian Duncan drove from Kajiado to Nairobi at a distance of 180km in one hour. What was the speed in m/s?​
charle [14.2K]

9514 1404 393

Answer:

  50 m/s

Step-by-step explanation:

Ian's rate was ...

  (180,000 m)/(3600 s) = 50 m/s

__

There are 1000 meters in a kilometer, and there are 3600 seconds in 1 hour. To find meters per second, divide meters by seconds.

7 0
2 years ago
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