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Oliga [24]
3 years ago
13

Find the perimeter of the window. Round 25cm to the nearest tenth

Mathematics
1 answer:
abruzzese [7]3 years ago
5 0

Answer:

Step-by-step explanation:

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Which is the value of x in the equation 5x= 15
MatroZZZ [7]
It is 3 because you take 5 times 3 and it equals 15
7 0
3 years ago
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=
svet-max [94.6K]

Answer:

The polygon has 9 sides

Step-by-step explanation:

we know that

A regular polygon has equal length sides and equal interior angles

step 1

Find the measure of the interior angle

Remember that

The interior angle plus the exterior angle must be equal to 180 degrees (form a linear pair)

Let

x ----> the measure of each interior angle in the regular polygon

so

x+40^o=180^o

solve for x

x=180^o-40^o=140^o

step 2

Find the number of sides of the regular polygon

we know that

The measure of each interior angle in a regular polygon is given by the formula

x=\frac{(n-2)180^o}{n}

where

n is the number of sides of the polygon

substitute the given values

140^o=\frac{(n-2)180^o}{n}

solve for n

140n=180n-360\\180n-140n=360\\40n=360\\n=9\ sides

therefore

The polygon has 9 sides

8 0
3 years ago
Simplify the expression. If not possible, write simplified.<br> 3 - 2y +9
svlad2 [7]

Answer:

-2y + 12

Step-by-step explanation:

3 - 2y +9

Combine the constants

-2y +3+9

-2y + 12

6 0
3 years ago
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What does the 75th term look like of 6,9,12
leva [86]

Answer:

228

Step-by-step explanation:

We are adding 3 each time so general rule is

Tn= 3n + 3

Therefore

T= 3(75)+3

= 228

3 0
3 years ago
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1. Which of the following is an example of a proper fraction?
Mars2501 [29]

Answer:

D is the answer

Step-by-step explanation:

8 0
3 years ago
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