3 years ago

The sum of the interior angles of a polygon is 540°. How many sides does the polygon have?

Mathematics

1 answer:

8090 [49]3 years ago

7 0

The answer is B. 5 !

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What is the 100th term in the list?1017243138

Studentka2010 [4]

the sequence starts at 10 and increases by 7 each time, thefore a possible sequence identification is:

$\begin{gathered} a_n=7n+3 \\ \text{Let's verify:} \\ a_1=7(1)+3=7+3=10 \\ a_2=7(2)+3=14+3=17 \\ a_3=7(3)+3=21+3=24 \\ \text{and so on} \\ \text{.} \\ \text{.} \\ \text{.} \end{gathered}$

Therefore, the 100th term is:

$a_{100}=7(100)+3=700+3=703$

3 0

1 year ago

After proving two triangles are congruent, then one can prove parts of a triangle are congruent using the reasoning CPCTC.

KatRina [158]

Answer:

The answer is True because CPCTC stands for Corresponding Parts of Congruent Triangles are Congruent.

7 0

2 years ago

Find the measures of the numbered angles in the kite.

Dafna11 [192]

Answer:

1 is 90

2 is 52

Step-by-step explanation:

1 is a right angle so its 90

for 2 angles in a triangle equal to 180

so 180-90-38 is equal to 52

3 0

3 years ago

If EF = 2x-7, FG = 4x-20, and EG = 21, find the values of x, EF, and FG.

Serggg [28]

Given -:

EF = 2X-7

FG = 4X-20

EG = 21

FIND OUT

EF =?

FG = ?

To proof

as given in the question

we have the value of EF = 2X-7 , FG = 4X-20 and EG = 21

Thus we have

EG = EF + FG

21 = 2X-7 + 4X- 20

21 = 6x - 27

48 = 6x

x = 8

Hence proved

Now put this value

$EF = 2\times 8 - 7\\EF = 9$

Now

$FG = 4\times 8 - 20\\FG = 12$

Hence proved

8 0

3 years ago

35 is equal to 70% of a number n . Write and solve an equation to find n . Write the percent as a decimal.

kow [346]

35=.7 x n
35/.7 = 50
n=50

3 0

2 years ago