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3 years ago

I will give brainiest to the person who answers this

Mathematics

1 answer:

musickatia [10]3 years ago

7 0

Answer:

12.4

Step-by-step explanation:

$AL= 2r\pi (\frac{angle}{360} )$

$AL= 2(7.9)(\pi )(\frac{90}{360})\\$

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In a class of 27 students, five students have 1 pet.

Digiron [165]

Answer:

yes, the student who has 8 pets.

Step-by-step explanation:

the majority of the class has between 0-4 pets leaving the student with 8 to be the "outlier"

3 0

3 years ago

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Right triangles abc and dbc with right angle c are given below. If cos(a)=15,ab=12 and cd=2, find the length of bd.

dmitriy555 [2]

see the attached figure to better understand the problem

we have that

$cos(A)=\frac{1}{5} \\ AB=12\ units\\ CD=2\ units$

Step 1

Find the value of AC

we know that

in the right triangle ABC

$cos (A)=(AC/AB)\\AC=AB*cos(A)$

substitute the values in the formula

$AC=12*(1/5)\\ AC=2.4\ units$

Step 2

Find the value of BC

we know that

in the right triangle ABC

Applying the Pythagorean Theorem

$AB^{2} =AC^{2}+BC^{2}\\ BC^{2}=AB^{2} -AC^{2}$

substitute the values

$BC^{2}=12^{2} -2.4^{2}\\BC^{2}= 138.24\\ BC=11.76\ units$

Step 3

Find the value of BD

we know that

in the right triangle BCD

Applying the Pythagorean Theorem

$BD^{2} =DC^{2}+BC^{2}$

substitute the values

$BD^{2} =2^{2}+11.76^{2}$

$BD=11.93\ units$

therefore

the answer is

the length of BD is 11.93 units

8 0

3 years ago

Read 2 more answers

Does anyone know how to solve this?

KATRIN_1 [288]

Answer:

<30,-20>

Step-by-step explanation:

4u + 2v

4< 6,-4> + 2< 3,-2>

<24,-16> + < 6,-4>

<30,-20>

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3 years ago

Begin a one-day journal, where you record every math process (no matter how small or trivial) you used during the day. You may w

saw5 [17]

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4 0

3 years ago

What are two consecutive even integers whose product is 1224?

Alex

You have your choice of two pairs of consecutive even integers:

-36 and -34

OR

34 and 36 .

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3 years ago

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