1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
lorasvet [3.4K]
3 years ago
9

Find the value of x 143° 2x° 116° 125° 152° 140° 139° X°

Mathematics
2 answers:
Ann [662]3 years ago
7 0

Answer:

88.33\°

Step-by-step explanation:

Angles in an octagon add up to 1080 degrees.

x+2x+143+139+140+125+116+152=1080

3x=1080-143-139-140-125-116-152

3x=265

x=265/3

Mumz [18]3 years ago
6 0

Answer:

88\frac{1}{3} Or 88.33

Step-by-step explanation:

So since we know that <u><em>all the angles in a octagon add up to 1080 </em></u>we can make a equation for this question which is down below.

x+2x+143+139+152+140+116+125=1080

So adding all that up we get this down below.

3x+815=1080

To find x we subtract 815 from 1080 and we get this.

3x=265

And finally we divide 265 and 3.

x=88\frac{1}{3}

So x is 88 and one-third nit it can be in decimal form like this below.

88.33 This is rounded to the nearest hundredth

You might be interested in
Enter the value for x that makes the equation 1/2 (4x+12)+5x=30 true.
8090 [49]
First, distribute the (1/2) into (4x+12) by multiplying them.

The equation becomes:

2x + 6 + 5x = 30

On the left side, combine “like terms” through addition.

7x + 6 = 30

Subtract 6 from both sides:

7x = 24

Finally, get x alone by dividing both sides by 7:

x = 24/7, or if you wanted to round the decimal answer, it’s about 3.429.
8 0
3 years ago
What is 1/5 expressed as a percent? A. 10% B. 20% C. 30% D. 50%
Serggg [28]

Answer:

I'm pretty sure it's B.20%

8 0
2 years ago
Read 2 more answers
Which property is demonstrated by the equation (5 + a) + 3 = (a + 5) + 3?
sineoko [7]

Answer:

Communitive Property

Step-by-step explanation:

Commutative property = 2 + 3 = 3 + 2 or 2(3) = 3(2)

Associative Property = (2 x 3) 5 = 2 (3 x 5) or (2 + 3) + 5 = 2 + (3 + 5)

Inverse Property = 2 + (-2) = 0 or (2/1)(½) = 1

Basic Definitions:

<u><em>Commutative Property</em></u> - Gives you the ability to switch the order of the numbers in an expression.

<u><em>Associative Property</em></u> - Let's you move the parenthesis in an expression but not the numbers.

<u><em>Inverse</em></u> - Uses numbers like 0 and 1.

Using these basic definitions and examples, we can summarize that the best answer would be <u>Communitive Property</u>

<u></u>

4 0
3 years ago
I really need help a and b
Ivan

Using BEDMAS

a) 6+4(2+3)^2
    6+4(5)^2  - Eliminate addition in bracket
    6+4(25)  - Execute the exponent
    6+100  - Mulitplying
    106 - Addition

b)(6+4)(2+3)
   (10)(5) -Addition in BRACKETS done
   50 - Mulipication

If you found that helpful please rate as "Brainiest" if not comment below :)

5 0
3 years ago
Read 2 more answers
Each night, Abby recorded how many pages of a book she read before going to bed. Her data is as follows: 7, 9, 10, 6, 8, 12, 5,
aksik [14]

Answer:

mean = 12.9

median = 9.5

Step-by-step explanation:

mean = sum of all observations / total no. of observations

= 7+9+10+6+8+12+5+11+48+13 / 10

=129 / 10

= 12.9

median = middlemost no. after arranging in ascending order

= 5,6,7,8,9,10,11,13,48

=9 and 10

=9+10 / 2

= 19 / 2

= 9.5

8 0
3 years ago
Other questions:
  • If f(x)= 5x-3 what is f(-4)
    13·1 answer
  • What type of polynomial it is
    9·1 answer
  • What is the absolute vaulue of 5
    14·2 answers
  • Josh bought 2 pairs of jeans for $25.60 each and some shirts for $15.30 each. If he spent a total of $112.40,
    14·1 answer
  • What is the value of x? ​
    13·1 answer
  • Which choices are equivalent to the fraction below? Check all that apply.
    12·2 answers
  • N divided by 2 - 6 = 8
    10·1 answer
  • One number is 4 less than a second number. Twice the second number is 13 less than 5 times the first. Find the two numbers.
    6·1 answer
  • If the temperature on a thermometer is 7 degrees and rises 5 degrees what is the new reading
    8·1 answer
  • Write <br> 25<br> 2<br> as a mixed number. <br> Give your answer in its simplest form.
    15·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!