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2 years ago

Find the measure of one interior angle of a regular 21-gon.

Mathematics

2 answers:

ExtremeBDS [4]2 years ago

5 0

C step-by-step the coordinate of that is pretty simple to say but hard at the same time

lesya [120]2 years ago

4 0

Measure of sum of interior angles formula (where “n” is number of sides): (n-2)180

(21-2)180
=3420

3420 is the measure of the sum of a regular 21-gon, and to find the measure of only one angle, we need to divide the sum by the number of sides, so
3420/21

= 162.9

the answer is B

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I am soo confused can ya'll help me plz? Thx.

Lady_Fox [76]

Answer:

6 and 7 over 15 I am pretty sure it is that

6 0

3 years ago

Need help with these 2 questions

MArishka [77]

Answer: 1. x= -12 2. x= 12

Step-by-step explanation:

1. 5(+3)=−45

5x+15−15=−45−15

5x= -60

5x/5 = -60/5

x = -60/5

x= -12

2. 1x/2−4=2

x/2 -4=22−4+4=2+4

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2⋅2=2⋅6

x=2⋅6

x= 12

8 0

3 years ago

Divide. Write the quotient in lowest terms. 3/5. Devide by 2 1/2 how much ????

dybincka [34]

Answer:

The answer is .24, or 6/24

Step-by-step explanation:

Its easiest to convert the 2 answers into decimals and then solve.

6 0

3 years ago

Given a geometric sequence with a1 = 6 and r= 2/3 write an explicit formula for an the nth term of the sequence.

fomenos

the explicit formula for aₙ the nth term of the sequence will be: $a_{n}=6\times (\frac{2}{3})^{n-1}\\$

Step-by-step explanation:

The explicit formula of geometric sequence is of the form:

$a_{n}=a_{1}r^{n-1}$

where a₁ is the first term and r is the common ratio.

We are given:

a₁ = 6

r = 2/3

Putting values in the formula:

$a_{n}=a_{1}r^{r-1}\\a_{n}=6\times (\frac{2}{3})^{n-1}\\$

So, the explicit formula for aₙ the nth term of the sequence will be: $a_{n}=6\times (\frac{2}{3})^{n-1}\\$

Keywords: Explicit formula for geometric sequence

Learn more about Explicit formula for geometric sequence at:

#learnwithBrainly

6 0

3 years ago

Solve by factoring. m^2+8m+7=0 A. 8,7 B. -7,1 C. -7,-1 D. 7,1

REY [17]

The answer is c, -1 or -7

Hope this helped :)

5 0

3 years ago