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kvasek [131]
3 years ago
12

The perimeter of a rectangle is 20 centimetres. The length is 6centimeters.

Mathematics
2 answers:
noname [10]3 years ago
7 0

Answer:

Perimeter =20cm

Length =6

Breath = X

P= 2(l+b)

20 =2(6+x)

20=12+2x

20-12=2x

8=2x

x=8/2

x=4

Step-by-step explanation:

mariarad [96]3 years ago
7 0

Answer:

The Width is 4cm

The Area is 24cm²

Step-by-step explanation:

2(6cm+xcm)=20

12+2x=20

(collect like terms)

2x=20-12

2x=8

(divide both sides by the coefficient of x)

<u>2</u><u>x</u>=<u>8</u>

2 2

x=4cm is our width

so for the area our formular is L*B=6*4=24cm²

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Step-by-step explanation:

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On a flight New York to London an airplane travels at a constant speed. An equation relating the distance traveled in miles d to the number of hours flying t is t= 1/500d. How long will it take the airplane to travel 800 miles?

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Solve e inequality -x&lt;-29
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7 0
3 years ago
For which equation is x = 9 a solution? A. 3x – 7 = –34 B. x – 9 = 1 C. 2003-05-02-00-00_files/i0020000.jpg D. 4x + 5 = 41
Monica [59]
X=9


A) 3x-7=34
 3x= 34+7
 3x= 41
 x= 41/3
 

B) x-9=1
x=1+9
x=10


C) dude what is this


D) 4x+5=41
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    4x=36
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Hope it helps!
#MissionExam001

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