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kirza4 [7]
3 years ago
10

An interior angle of a regular convex polygon is 135°. How many sides does the polygon have? A. 9 B. 8 C. 10 D. 11

Mathematics
2 answers:
aleksandr82 [10.1K]3 years ago
8 0

Answer:

b

Step-by-step explanation:

Dominik [7]3 years ago
7 0

Answer:

Number of Sides = 360 / (180 - each interior angle)

Number of Sides = 360 / (180 -135)

Number of Sides = 360 / 45

Number of Sides = 8

Answer is B

Source:  https://www.1728.org/polygon.htm



Step-by-step explanation:


You might be interested in
~~~ 30 POINTS ~~~
trasher [3.6K]
<span>1)   3x-2=x+10


</span><span>Now, lets solve this step-by-step.
</span><span>
3x - 2 = x + 10
-x             -x
</span><span>
</span><span>3x - x = 2x                                2x - 2 = 10
</span><span>
</span><span>2x - 2 = 10
</span>2x - 2+2 = 10+2          The inverse operation helps isolate the variable. 
<span>
2x = 12

2x/2 = 12/2

x = 12/2
x = 6</span><span>

Answer: x = 6

2) x + 4 = 19 - 2x </span>

We can solve this much faster

x + 4 = 19 - 2x
                  +2x

x+2x = 3x

3x + 4 = 19
      -4     -4

19-4 = 15

3x= 15
3x/3 = 15/3
x= 5

Answer: x = 5

3) 
<span>8x - 20 = x + 15

Much faster now!!

8x - 20 = x + 15
               -x
8x-x = 7x

7x - 20 = 15
      +20   +20
15+20 = 35

7x = 35
7x/7 = 35/7
x = 35/7
x = 5

Answer: x= 5</span>
3 0
3 years ago
Read 2 more answers
Does anyobe else feelllll mad right now​
Leno4ka [110]

Answer:

meeee

Step-by-step explanation:

3 0
3 years ago
Read 2 more answers
Write an equation that can be used to solve the problem. Then answer the question asked. A group of college students are volunte
svp [43]

Answer:

Required equation : \frac{1}{t}=\frac{1}{3}+\frac{1}{9}

Together they can paint the same room in 2.25 hours or 2 hours 15 minutes.

Step-by-step explanation:

It is given that Dale Horton can paint a certain room in 3 hours.

One hour woks of Dale Horton = 1/3

Kathy Garcia can paint the same room in 9 hours.

One hour woks of Kathy Garcia = 1/9

Let together they can paint the same room in t hours.

One hour woks of both = 1/t

\frac{1}{t}=\frac{1}{3}+\frac{1}{9}

\frac{1}{t}=\frac{3+1}{9}

\frac{1}{t}=\frac{4}{9}

After reciprocal we get

\frac{t}{1}=\frac{9}{4}

t=2.25

1 hour = 60 minutes.

0.25 hour = 15 minutes.

Therefore, together they can paint the same room in 2.25 hours or 2 hours 15 minutes.

4 0
3 years ago
Mario is 63 years older than his grandson Jonas. How many years ago was Mario's age 10 times Jonas's age if Mario's age is curre
mars1129 [50]

Answer:

14 years ago

Explanation:

Let Mario's age be m, Jonas age be j.

From, Mario is 63 years older than Jonas

Equation 1: m = j + 63

From, Mario's age is four times Jonas age

Equation 2: m = 4j

Solve them by substitution:

m = j + 63

4j = j + 63

4j - j = 63

3j = 63

j = 21

Find Mario's age:

m = j + 63

m = 21 + 63

m = 84

Follow this steps:

m - y = 10(j - y)

84 - y = 10(21 - y)

84 - y = 210 - 10y

-y + 10y = 210 - 84

9y = 126

y = 14

6 0
2 years ago
Read 2 more answers
A zoo in Tallahassee has thirty heads and one hundred feet. how many beasts and how many birds does the zoo contain?
BartSMP [9]
I wish I could help but idk it ... what I tried
5 0
3 years ago
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