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3 years ago

Построить 12 и 5 угольник со стороной 4 см; найти их внутренние углы, площадь, периметр. 20 баллов

Mathematics

1 answer:

frutty [35]3 years ago

4 0

Answer:

UHHHHH.... UMMMM.... Well you see i dont speak nor do I understand Aribic so yeah.

Step-by-step explanation:

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Angle 1 measure 75 degree what is its complement

dalvyx [7]

I think it’s 76 because I added it that’s a way i solved it but you can also multiple it by 1 and it will give the the same answer

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2 years ago

80 marked up by 37.5 percent

Mariana [72]

Make 37.5% into decimal form : Since it is being marked up, add 100% = 1.375
1.375 x 80
1.375
x 80
_________
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_________
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80 marked up by 37.5% is 110.

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2 years ago

Gonna need help answering this Y=1/2x+7 Y=x-8

Nata [24]

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3 years ago

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13. For the arithmetic sequence: 6, 12, 18, 24,...

serg [7]

a_15 = 90

a_n = 6n

Step-by-step explanation:

Given sequence is:

6, 12, 18, 24,...

First of all we have to find the common difference. The common difference is the difference between consecutive terms of an arithmetic sequence.

Here,

$d=a_2-a_1 = 12-6 = 6\\d=a_3-a_2= 18-12 = 6$

The general form for arithmetic sequence is:

$a_n=a_1+(n-1)d$

Putting the values for a_1 and d

$a_n=6+(n-1)(6)\\a_n=6+6n-6\\a_n=6n$

a) Find a15

$a_{15} = 6(15)\\=90$

b) Write an equation for the nth term.

The equation is: a_n=6n

Keywords: Arithmetic sequence, Common Difference

Learn more about arithmetic sequence at:

#LearnwithBrainly

4 0

3 years ago

In addition to the facts in the diagram which statements is necessary to prove that the two triangles are congruent by the SAS c

atroni [7]

The angles should be included between the equal sides

6 0

2 years ago

Read 2 more answers