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steposvetlana [31]

2 years ago

14

The first 5 figures in a pattern are shown. If the patterncontinues, which expression can be used to find the number of circles

to make up Figure n?
f.n^2+ 2n
h. 2n^2+ 1
g. n^2+ 2
j. 2n^2+n

2 answers:

garri49 [273]2 years ago

6 0

Answer:

f

Step-by-step explanation:

Novosadov [1.4K]2 years ago

4 0

Answer:

F.

the corect answer for this question

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Karen claps her hand and hears the echo from a distant wall 0.113 s later. How far away is the wall? The speed of sound in air i

insens350 [35]

Answer:

19.3795 m

Step-by-step explanation:

If sound travels at 343 m/s and it took Karen 0.113 s to hear the echo from the wall, the distance travelled by the sound is:

$D=343\frac{m}{s} *0.113\ s\\D= 38.759\ m$

Note that the distance calculated above is the distance travelled from Karen to the wall and then back from the wall to Karen. Therefore, the distance between Karen and the wall is:

$d=\frac{38.759}{2}\\d=19.3795\ m$

The wall is 19.3795 m away from Karen.

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3 years ago

Fill in the blanks to complete the sentence

user100 [1]

Answer:

You would use the cos function because you are given the adjacent side and you are finding the opposite side.

Step-by-step explanation:

SOH CAH TOA

Sin = O/H

Cos = A/H

Tan = O/A

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H is the Hypotenuse

A is the adjacent side

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2 years ago

I don't understand how to do it can someone help me please!!!

goblinko [34]

Answer:

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Step-by-step explanation:

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3 years ago

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katen-ka-za [31]

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Step-by-step explanation:

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Answer:

3

Step-by-step explanation:

500 - 10 = 490

long way:

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