Mathematics Middle School

The sum of seven interior angle measurements in an octagon equal 835º. What is the angle measurement of the 8th angle? (Hint: An octagon has 8 sides.)

Answers

Answer 1

Answer:

The measurement of the eighth angle in the octagon is 245 degrees.

Step-by-step explanation:

The following formula calculates the total internal angles in an octagon:

Sum of the interior angle = (n - 2) * 180 degrees,

where n represents the polygon's number of sides. n = 8 for an octagon, so we have:

Interior angle sum = (8 - 2) * 180 = 1080 degrees.

Given that the sum of the seven inner angles is 835 degrees, we can construct the following equation:

835 + x = 1080

where x represents the eighth angle's degree measurement. After finding x, we obtain:

x= 1080 - 835

x = 245 degrees

The eighth angle of the octagon is therefore 245 degrees.

Related Questions

Kieran is going to the florist to buy foxgloves and orchids. The foxgloves can only be purchased in groups of 12 and the orchids can only be purchased in groups of 25. If Kieran wants to buy the same amount of foxgloves and orchids, then what is the lowest quantity of foxgloves that Kieran can buy? pls answer ASAP

Answers

Answer:

300.

This is the product of 12 x 25. The lowest possible number with questions like these is [number] multiplied by [number], and in this case that's 300.

300
It is the lowest multiple of both numbers

PLZ PLZ PLZ PLZ PLZ PLZ HELP ME I DONT UNDERSTAANDDDD I NEED ANSWERS SOME OF THEM I ACCIDENTLY CLICKED ON WHEN I TOOK THE PICTURE PLZZZZZZZZ

Answers

Answer:

answer A

answer C

answer B

answer A

Step-by-step explanation:

please I need brainlist

Which of these characteristics does a rhombus have

Answers

Answer: opposite sides with equal length

Step-by-step explanation:

Answer:

Opposite sides with equal length

Step-by-step explanation:

10 divided by 1 7/8 = 4x what is x? hurry!!

Answers

x= 20/17 ; multiply by reciprocal 10 times 8/17 =4x then 80/17=4x , divide both sides by 4 leaves you x=20/17
Hi!
X= 20/17
I hope this helps!!

plz help I need help with this one question
surface area of a rectangular prism I AM GONNA FAIL :(

Answers

Answer: 99 square cm

Step-by-step explanation:

you cut the height in half, so 6 divided by 2 = 3, if you do that you have to do the same to the width, so again 6 divided by 2 = 3, the length stays the same, so the equation would be 3 X 3 X 11 = 99

99 square cm （・∀・） -.

Im serious this time! This on is the last one!

Answers

42. they’re across from each other
i think it’s 42 :p :o

what is the first step in evaluating the expression (5 +8 / 4 x 3)2nd power

Answers

Divide 8/4. You have to work inside the parentheses first then left to right means division before the multiplication

I really need help it’s late night and limited time left
Should also include shown work

No links, no harmful links

No random answers that does not talk about the question, if it does happen I will report absurd answer

Answers

i think it is b? im sorry

Ms. McClain conducted an experiment with a 6-sided number cube. The table shows the number of times each number landed:

table: times landed out of 48

number: tosses:
1 8
2 10
3 7
4 6
5 9
6 8

For which number(s) did the theoretical probability equal the experimental probability?

A) 1
B) 2
C) 3
D) 4
E) 5
F) 6

Answers

ii think the answer is A

What is the approximate area of the triangle?

Answers

.... I don’t know I’m not sure
Formula: base* hight divided by 2

what is the lateral surface area of a rectangular prism in square inches.

Answers

Answer:

When a prism has its bases facing up and down, the lateral area is the area of the vertical faces.

(For a rectangular prism, any pair of opposite faces can be bases.)

The lateral area of a right prism can be calculated by multiplying the perimeter of the base by the height of the prism.

plz help me this hard

Answers

so the graph shows a division problem. the green parts represent 1/4 of the rectangle. and that 1/4 has been cut into 5 parts. so i think it would be d.

The image shows parallel lines cut by a transversal. The expressions represent unknown angle measurements. What is the value of x?

Answers

Answer:

x = 7

Step-by-step explanation:

The 2 angles are adjacent and sum to 180° , that is

11x + 8 + 12x + 11 = 180

23x + 19 = 180 ( subtract 19 from both sides )

23x = 161 ( divide both sides by 23 )

x = 7

DUE TODAY

A county has the following rule for voting: "Citizens under the age of 18 are not allowed to vote."

Part A: Write an inequality to show the age of citizens who are allowed to vote. )

Part B: Describe in words how you can show the solution to this inequality on a number line. (5 points)

Answers

Answer:

A. x<18

B. Given

Step-by-step explanation:

Citizens under the age of 18 are not allowed to vote. This means that 18 is included within the ones that can vote.

let x = the citizens under the age of 18

x < 18 is your inequality (Part A)

For the solution, because it does not include 18, you'll use an open dot (a non-filled in circle) placed on 18, and going to the left (less than).

The vertices of pentagon PQRST are P(9, 7), Q(9, 3), R(3, 3), S(3, 7), and T(6, 9). Graph the pentagon and find the length of side PQ

Answers

Answer:

4

Step-by-step explanation:

Find the surface area of the prism or pyramid. Round to the nearest hundredth if necessary.

Answers

Answer:

the total surface area would be 233^2 im pretty sure (im not 100% sure)   because the you do the lateral surface area add the top surface area add the bottom surface area so im pretty sure the answer would be 233cm^2 (^2 means squared)

image Which equation BEST fits the data in the given table?

Answers

Answer:

d i think

Step-by-step explanation:

Answer: it is D

Step-by-step explanation:

Reggie recorded the number of pages he read each day for five days.
The dot plot shows his data.
40 42
24 26 28 30 32 34 36 38
number of pages
The mean number of pages that Reggie read during the five days is 32.
What is the mean absolute deviation (MAD) of the data? Round your answer to

Answers

I think the mean absolute deviation is 5.6

Daily high temperatures (°F): 45, 50, 47, 52, 53, 45, 51 Calculate the range of temperature. Degrees

Answers

53-45 off of the info that I have hope this helps

Answer:

The range of the temperature is 8

Having the highest temp minus the lowest temp

27q = –513

Solve.

Please

Answers

Answer:

-19

Step-by-step explanation:

27x-19=-513

Answer:

-19

Step-by-step explanation:

To solve for q, you need to isolate q. To do, this you would divide both sides by 27.

27q = –513

27q/27 = –513/27

q = -19

What is the total area of this composite figure rounded to the nearest hundredth? 18.53 ft 2 39.53 ft 2 20.07 ft 2 43.07 ft 2

Answers

Answer:

39.53 ft^2

Step-by-step explanation:

A = l*w

= 12*3 = 36

A = 1/2 pir^2

The dm is 3, the rs is 3/2

=1/2 pi* (3/2)^2

= 1/2 *3.14 * 9/4

3.5325

Add them together

36+3.532539.5325

Round to nearest hundredth

39.53 ft^2

Sorry if it's so complicated! Hope this helped <3

39.53 ft^2

Answeerrrrrr

Pls help. I have no idea what to do.

Answers

Answer:

Yes, because it is a right triangle.

Answer:

Yes

Step-by-step explanation:

It's a right triangle, as the square root of 1.2 squared + 1.6 squared equals 2.

help me please i need help

Answers

Answer:

-2 = -3(2) + 4

Step-by-step explanation:

Formula: y = mx + b, m = rise/run

Given: b = 4, rise = -3, run = 1

Sub: y = mx + 4

Find m.

Sub: m = -3/1

Simplify: m = -3

Sub: y = -3x + 4

Solve: -2 = -3(2) + 4

HELP HELP HELPPPPPPP!!!!!!!!!!!!!!!!!!!!

Answers

Answer:

B

Step-by-step explanation:

The center is the number in the middle of them all (4) and the range/center represents the difference of the smallest and largest number (5).

yea what they said ig

Toni’s school day is 8 hours. She has 8 classes that
are 3/4 hour long. How many hours is Toni not in
class while she is at school?

A. 1 1/2
B. 2
C. 3/4
D. 9

Answers

The answer is B. 3/4 of an hour is 45 minutes, and 1 hour is 60 minutes, so we take the remaining 15 minutes, multiply it by 8 and that gives us 120. We know 60 times 2 is 120, so that gives us 2 hours.
The answer is B. 2 hours

Wha't the slope of the graph please help....

Answers

Answer:

3

Step-by-step explanation:

Answer:

The slope is 3 (PLZ GIVE ME BRAINLIEST!)

Step-by-step explanation:

Angie scored 91 points on a test but only received a 65% grade on the test. How many points were possible on the test?

Answers

There where 150 possible points I belive

Answer:

s 91 x 65= 4 615 / 100 = 46,15

je ne suis pas sur de ma reponse

Step-by-step explanation:

HELP HELP HELP HELP PLZ I AM FAILING I GOT THIS QUESTION INCORRECT PLZ!!! A rectangular prism and its dimensions are shown in the diagram.

Answers

Answer:6.5+5+7.5=19

Step-by-step explanation:

all you gotta do is add and you will never fail my guy

The surface area of the rectangular prism with a length of 7.5 in, a width of 5 in, and a height of 6.5 in is 237.5 square inches.

What is a rectangular prism?

A rectangular prism is a closed solid that has two parallel rectangular bases connected by a rectangle surface.

A rectangular prism and its dimensions are shown in the diagram.

Then the surface area of the rectangular prism will be  

Surface area = 2 (LW + WH + HL)

We have

L = 7.5 in

W = 5 in

H = 6.5

Then the surface area will be

Surface area = 2 (7.5 × 5 + 5 × 6.5 + 6.5 × 7.5)

Surface area = 2 (37.5 + 32.5 + 48.75)

Surface area = 2 (118.75)

Surface area = 237.5

More about the rectangular prism link is given below.

https://brainly.com/question/21308574

DUE TODAY
A county has the following rule for voting: "Citizens under the age of 18 are not allowed to vote."

Part A: Write an inequality to show the age of citizens who are allowed to vote.

Part B: Describe in words how you can show the solution to this inequality on a number line.

Answers

Answer: Citizens under the age of 18 are not allowed to vote. This means that 18 is included within the ones that can vote.

let x = the citizens under the age of 18

x < 18 is your inequality (Part A)

For the solution, because it does not include 18, you'll use an open dot (a non-filled in circle) placed on 18, and going to the left (less than).

hope this helps!

PLEASE HELP ME!!!! THIS IS TIMED!!! PLEASE HELP!!!!!!!

Answers

.(D) I hope this helps
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