2 years ago

X is less than or equal to 9 and greater than or equal to 5

Mathematics

2 answers:

OverLord2011 [107]2 years ago

6 0

I believe it will be 5< x<9 tell me if its wrong or not! :)
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topjm [15]2 years ago

3 0

5≤x≤9 it can also be reversed as 9≥x≥5 which is the same thing

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Please help me i am desperate please (1/3)

Sergeu [11.5K]

I think we're not supposed to do more than 3 problems in one answer; certainly not five pages. Does the 1/3 mean there are 10 more to come?

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Right triangle, opposite side of 10, adjacent side of 21,

tan x = opp/adj = 10/21

x = arctan 10/21 = 25.46°

Answer: 25

cos x = adj / hyp = 10/14

x = arccos 10/14 = 44.42°

Answer: 44

tan x = opp/adj = 12/24 = 1/2

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Answer: 27

tan x = 31/32

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Answer: 44

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Answer: 20

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2 years ago

Find the area of a circle with diameter 10 .

andriy [413]

The answer is 78.54.

5 0

2 years ago

Will give 25 points and brainliest answer if correct

Norma-Jean [14]

Let $d$ be the common difference between terms in the sequence $\{a_n\}_{n\ge1}$ . Then

$a_{19}=-58$
$a_{20}=a_{19}+d$
$a_{21}=a_{19}+2d$
$\implies-164=-58+2d\implies d=-53$

The first term in the sequence, $a_1$ , satisfies

$a_2=a_1+d$
$a_3=a_1+2d$
$a_4=a_1+3d$
...
$a_{19}=a_1+18d$
$\implies-58=a_1+18(-53)\implies a_1=896$

So the explicit formula for the $n$ -th term in the sequence is

$a_n=a_1+(n-1)d\implies a_n=896-53(n-1)$

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2 years ago