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3 years ago

Can someone please help me with this

Mathematics

2 answers:

dusya [7]3 years ago

8 0

Answer:

Yes

Step-by-step explanation:

Because I can assist you hit my inbox

sergij07 [2.7K]3 years ago

7 0

Answer:

help you with what?

Step-by-step explanation:

post the question and I am probably 90% sure I can answer it for you I just need to know what the question is . if you've already got it done then no need to answer back .

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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

Which sequence begins with 1 and follows this rule? multiply by 2 and add 1.

Olin [163]

Change the information into an equation and do sequence. pull out any necessary information.
y = 2x + 1
starts at 1... so your first sequence is 1.
plug in x=1 then it becomes 3. then the next sequence you plug in 3 (, the answer to your previous solve) you get 7. continue to do this. next sequence you plug in x=7 into the equation y = 2x + 1.
thus, y = 2(7) + 1 =15... so forth...
therefore the answer is B.

Hope this helps :)

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3 years ago

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neonofarm [45]

I would definitely say D

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2 years ago

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Damm [24]

Answer:

The median is 8.5

Step-by-step explanation:

When you find the median of an even amount of number, you add the two middle numbers and divide by 2.

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3 years ago

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densk [106]

Answer:

(4,-2.5)

Step-by-step explanation:

first one is x cordination...it is under the 4

second one is Y cordination..its between -2 and -3

If you understand my answer.mark me as Brainliest...If not...Mark me as BrAiNlEss...☺️

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3 years ago