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Slav-nsk [51]
3 years ago
12

The perimeter of a rectangle is 160 meters. The length is 20 meters greater than the width. Find the dimensions of the rectangle

.
Mathematics
1 answer:
s344n2d4d5 [400]3 years ago
4 0
<h2><em>Width=w </em></h2><h2><em>Length=l </em></h2><h2><em>Perimeter=p </em></h2><h2><em> </em></h2><h2><em>p=2w+2l </em></h2><h2><em>l=20+w </em></h2><h2><em>p=2w+20+w+20+w </em></h2><h2><em>p=4w+40 </em></h2><h2><em> </em></h2><h2><em>4w+40=160 </em></h2><h2><em>4w=160-40=120 </em></h2><h2><em>w=120:4=30 </em></h2><h2><em>w=30 </em></h2><h2><em>l=20+w </em></h2><h2><em>l=20+30=50</em></h2>
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Answer:

a: $49

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Explaination:

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6 0
3 years ago
These polygons are similar. Which similarity statement is correct?
vodomira [7]

Answer:

A B C D is similar to F G H E

Step-by-step explanation:


Here we can see that

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Therefore

A B C D is similar to F G H E

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5 0
3 years ago
Read 2 more answers
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rjkz [21]

Answer:

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Standard deviation: 4

Step-by-step explanation:

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The formula for Mean = Sum of terms/ Number of terms

Number of terms

= 42 + 54 + 50 + 54 + 50 + 42 + 46 + 46 + 48+ 48/ 10

= 480/10

= 48

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b) Standard deviation

The formula for Standard deviation =

√(x - Mean)²/n

Where n = number of terms

Standard deviation =

√[(42 - 48)² + (54 - 48)² + (50 - 48)² +(54 - 48)² + (50 - 48)² +(42 - 48)² + (46 - 48)² + (46 - 48)² + (48 - 48)² + (48 - 48)² / 10]

= √-6² + 6² + 2² + 6² + 2² + -6² + -2² + -2² + 0² + 0²/10

=√36 + 36 + 4 + 36 + 4 + 36 + 4 + 4 + 0 + 0/ 10

=√160/10

= √16

= 4

The standard deviation of the ages is 4

3 0
3 years ago
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3 years ago
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