a rectangle has a perimeter of 158 cm and the given area of 804 cm^2 Its length is 7 more than five times its width. Write and solve a system of equations to find the dimensions of the rectangle.

Answers

Answer 1
so i'm using the letter l for length w for width p for perimeter and a for area


l = 5w + 7
a = (5w+7) x w

p =2(5w+7) + 2w
= 10w + 14 +2w
p = 12w + 14
158cm = 12w + 14
12w = 144
w = (144/12) = 12

l = 5w + 7
so 5 x 12 + 7 = 67

width = 12cm length = 67cm

proven: area = 804cm^2 which is 12 x 67

hopes that u can understand my workings and that this helps :)



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Answers

Answer:B

Step-by-step explanation:

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The correct answer is option (A)

What is parallelogram?

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What is the area of the parallelogram?

"The area of the parallelogram is: A = base × height"

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Answer:

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Answers

Answer:

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Answers

y=2x+b
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What is the question?

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Answer:

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Sue ran the most, but you yourself need to draw an explanation, just so you know 3/8 is greater then 3/4 and 2/3

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Answer:

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Step-by-step explanation:

George has cut down a 60ft high oak tree. He now wants to chop it into smaller pieces. He first cuts it into two pieces that are both 30ft. And then he continues on into making ten pieces that all are 6ft long before loading them onto his truck.

picture08

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We can also use this example with the pieces of wood to explain the symmetric property of equality. This property states that if quantity a equals quantity b, then b equals a.

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if60=30+30,then30+30=60

Another property that can be explained by this is the transitive property of equality. It tells us that if a quantity a equals quantity b, and b equals the quantity, c, then a and c are equal as well.

ifa=bandb=c,thena=c

Or in the numbers taken from the oak tree example

if60=30+30

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Since we know that 30 + 30 = 20 + 40 and that 30 + 30 = 60 we can substitute 30 + 30 for 20 + 40 and get 60 = 20 + 40. This is called the substitution property of equality.

If a = b, then a can be substituted for b in any expression.George has cut down a 60ft high oak tree. He now wants to chop it into smaller pieces. He first cuts it into two pieces that are both 30ft. And then he continues on into making ten pieces that all are 6ft long before loading them onto his truck.

picture08

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60=30+30=6+6+6+6+6+6+6+6+6+6

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a=a

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ifa=b,thenb=a

Or if we use our example

if60=30+30,then30+30=60

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ifa=bandb=c,thena=c

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if60=30+30

and30+30=6+6+6+6+6+6+6+6+6+6

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9514 1404 393

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Step-by-step explanation:

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Enter
Corporation. All Rights Reserved

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