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umka2103 [35]
3 years ago
6

Help plss

Mathematics
2 answers:
svlad2 [7]3 years ago
4 0

Answer:

????

Step-by-step explanation:

Tasya [4]3 years ago
4 0

Answer:

-293

Step-by-step explanation:

14(1-23)2+13

PEMDAS

14(-22)2+13

-308 + 2 +13

-306

-293

hope this helps

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(sin x)(tan x cos x - cot x cos x) = 1 - 2 cos2x
Aliun [14]
As

\tan x=\dfrac{\sin x}{\cos x}
\cot x=\dfrac{\cos x}{\sin x}

we have

\sin x(\tan x\cos x-\cot x\cos x)=\sin x\left(\sin x-\dfrac{\cos^2x}{\sin x}\right)=\sin^2x-\cos^2x

Recalling that \cos2x=\cos^2x-\sin^2x, we end up with

-\cos2x=1-2\cos2x
1=\cos2x
\implies2x=2n\pi

(where n is any integer)

\implies x=n\pi
5 0
3 years ago
What is the missing value? The Volume is 5120 m^3
Neko [114]
I think that the missing value is 16m.

I just multiplied two other numbers with 20 and 20 x 16 x 16 = 5120

I hope this was right.
7 0
3 years ago
A boat costs $11,850 and decreases in value by 10% per year. How much will the boat be worth after 8 years?
arsen [322]
11,850 x .9 = 11,605  

11605 x . 9 = 9,598.5       year 2 

9,598.5 x .9 = 8,638.65

8,635 x .9 = 7,774.785       year 4

7,774.785 x .9 = 6,997.31

6,6997.31 x .9 = 6297.58     year 6 

6297.58 x .9 = 5,667.82 

5,667.82 x .9 = 5,101.04 year 8 

The answer is D 






8 0
3 years ago
Read 2 more answers
Which word problem below could be represented by the number sentence 6 X 4= ?
Lady bird [3.3K]

Answer:

O D. Luis had 6 pencils. He placed them in 4 groups. How many were in each group?

Step-by-step explanation:

this makes more sense, since he had 6 pencils and put them in 4 different groups. so, 6 *4 = 24 c:

6 0
2 years ago
Question 2
laila [671]

Answer:

The answer is 12

Step-by-step explanation:

12 + b is lees than or equal to 25

So 12 + 12 = 24

which is less than 25.

(The real answer is 13 but that is not the question lol)

So 12 makes the inequality true

If that makes sense

4 0
3 years ago
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