3 years ago

What it means for an answer to be extraneous ?

Mathematics

2 answers:

Ratling [72]3 years ago

8 0

This means the answer is off topic or way off point

Serhud [2]3 years ago

6 0

It means that the answer is unsrelated to the topic. You think it is an answer that is outside the box.

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An arc subtends a central angle measuring

barxatty [35]

Answer:

The arc is one-third of the circumference.

Step-by-step explanation:

The area of a circumference = 2πr

C = 2πr ... (1)

If an arc subtends a central angle measuring 2π/3 rad,

The length of the arc = rθ

Given θ = 2π/3

Length of the arc L = r(2π)/3

L = 2πr/3... (2)

L = 1/3(2πr)

Since C = 2πr

L = 1/3C

This shows that the arc is one-third of the circumference.

6 0

3 years ago

Which ratio would help find the height of the kite?

AnnZ [28]

Answer:

sin 50°

Step-by-step explanation:

$\sin 50° = \frac{x}{200} \\ 0.7660444431 = \frac{x}{200} \\ = 200 \times 0.7660444431 \\ x = 153.208889 \\ x = 153.21 \: ft$

3 0

3 years ago

Which is equivalent to (3 + 2i)(3 - 2i)?<br> A) 5 <br> B) 6 <br> C) 9 <br> D) 13

SVETLANKA909090 [29]

Answer: D

Step-by-step explanation:

(3 + 2i) (3-2i) = 13

8 0

3 years ago

Read 2 more answers

What is the value of x?

Elanso [62]

Since all the angles are congruent, the sides must be congruent too.

So, just have one equation on one side equal to another.

5x= 3x+6

Subtract 3x from both sides.

2x=6

Divide 2 into both sides.

x=3.

We can check this by seeing if all the sides are the same.

5(3)= 15

6(3)-5= 15

3(3)+6= 15

I hope this helps!
~cupcake

7 0

3 years ago

There are 25 towns in a certain country, and every pair of them is connected by a train route. How many train routes are there?

7nadin3 [17]

Answer:

Step-by-step explanation:

a pair=2

so 25/each pair of towns

25/2=12+1=13

5 0

3 years ago