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1 year ago

Pleaseee HELPP MEE WITHH THIS QUESTION!

Mathematics

1 answer:

Zina [86]1 year ago

7 0

Answer:

1120°

Step-by-step explanation:

Use the sum of interior angles formula:

$180(n-2)$

Where n is the number of sides.

In a nonagon, there are 9 sides, substitute 9 for n:

$180(9-2)\\180(7)\\1260$

Since our nonagon is a regular nonagon, all 9 angles measure the same, so each angle measures:

$\frac{1260}{9} =140$

Subtract 140 from 1260:

$1260-140=1120$

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3 years ago

How many sig figs r there in 0.01724

FromTheMoon [43]

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2 years ago

* The nth term of sequence A is 3n − 2 The nth term of sequence B is 10 − 2n Sally says there is only one number that is in both

Nina [5.8K]

Answer:

Sally is not right

Step-by-step explanation:

Given the two sequences which have their respective $n^{th}$ terms as following:

Sequence A. $3n - 2$

Sequence B. $10 - 2n$

As per Sally, there exists only one number which is in both the sequences.

To find:

Whether Sally is correct or not.

Solution:

For Sally to be correct, we need to put the $n^{th}$ terms of the respective sequences as equal and let us verify that.

$3n-2=10-2n\\\Rightarrow 3n+2n=10+2\\\Rightarrow 5n=12\\\Rightarrow n = \dfrac{12}{5}$

When we talk about $n^{th}$ terms, $n$ here is a whole number not a fractional number.

But as per the statement as stated by Sally $n$ is a fractional number, only then the two sequences can have a number which is in the both sequences.

Therefore, no number can be in both the sequences A and B.

Hence, Sally is not right.

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2 years ago

Round 5,439 to the nearest thousand

Murrr4er [49]

Answer:

5,000

Step-by-step explanation:

4 is less than 5 and more so, it will leave the 5 alone

It will also turn everything else into 0's. Making it:

-------------------------------------------------------------------------------

5,000

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3 years ago

Can someone help me pls

Andrej [43]

Answer:

x=78

Step-by-step explanation:

q is 90 degrees since it is a right angle,

p=12

90 plus 12 =102

x=180-102

x=78

3 0

2 years ago

Read 2 more answers