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nalin [4]
3 years ago
12

Please someone help

Mathematics
1 answer:
Alexus [3.1K]3 years ago
8 0

Answer:

I only know the answer to the first one which is x = y + 5

Step-by-step explanation:

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20 PTS! Please Help!!!! Will Give Brainliest!! This is a Khan Academy Problem!!!
klemol [59]

Using it's concept, the approximate perimeter of pentagon ABCDE is given as follows:

34.4 units.

<h3>What is the perimeter of a figure?</h3>

The perimeter of a figure is given by the sum of the lengths of it's outside dimensions.

In this problem, the vertices are in a coordinate-plane, hence the distances are found using the formula for the distance between two points.

<h3>What is the distance between two points?</h3>

Suppose that we have two points, (x_1,y_1) and (x_2,y_2). The distance between them is given by:

D = \sqrt{(x_2-x_1)^2+(y_2-y_1)^2}

The length of segment AB is:

AB = \sqrt{(6 - 0)^2+(0 - 7)^2} = 9.2

The length of segment BC is:

BC = \sqrt{(6 - 3)^2+(0 + 4)^2} = 5

The length of segment CD is:

CD = \sqrt{(-3 -3)^2+(-4 + 4)^2} = 6

The length of segment DE is:

DE = \sqrt{(-6 + 3)^2+(0 + 4)^2} = 5

The length of segment EA is:

EA = \sqrt{(-6 +0)^2+(0 - 7)^2} = 9.2

Hence the perimeter is:

P = AB + BC + CD + DE + EA = 9.2 + 5 + 6 + 5 + 9.2 = 34.4 units.

More can be learned about the perimeter of a figure at brainly.com/question/18610622

#SPJ1

3 0
2 years ago
What number is one hundred thousand more than<br> 900,000? Explain how you know.
tamaranim1 [39]

Answer:

1,000,000

Step-by-step explanation:

addition and maths

6 0
3 years ago
Read 2 more answers
How to add numbers to percentages? For example, 20+300%. I really want to know how to do this but i cant figure out . I really w
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Answer:

If your calculator does not have a percent key and you want to add a percentage to a number multiply that number by 1 plus the percentage fraction. For example 25000+9% = 25000 x 1.09 = 27250. To subtract 9 percent multiply the number by 1 minus the percentage fraction. Example: 25000 - 9% = 25000 x 0.91 = 22750.

Step-by-step explanation:

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4 years ago
What is the answer to $(x+4)(x^2+3x+2)=
lesya [120]

Answer:

=3 + 7 2 + 1 4 + 8

Step-by-step explanation:

8 0
3 years ago
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Selena bought 3.75 pounds of meat for $4.64 per pound. What was the total cost of the meat?
forsale [732]

The total cost of the meat is $17.40.

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4 years ago
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