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Bad White [126]
3 years ago
9

How do you solve: 3/4n-18=1/4n-4

Mathematics
1 answer:
Lena [83]3 years ago
8 0
1. You must subtract both sides by 1/4n to end up with 2/4n-18=-4

2.Then you add 18 to both sides to end up with 2/4n=14

3. Now you multiply both sides by 2/4 , aka 1/2 to get n by itself, and you will end up with n=7

n=7 is your answer!
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The endpoints of one side of a regular pentagon or -1, four and two, three what is the perimeter of the Pentagon
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Step-by-step explanation:

(-1,4),(2,3)\\ \\ s^2=(-1-2)^2+(4-3)^2\\ \\ s^2=9+1\\ \\ s^2=10\\ \\ s=\sqrt{10}\\ \\ p=5s\\ \\ p=5\sqrt{10}\ exact\\ \\ p\approx 15.8

8 0
3 years ago
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3 years ago
What is the greatest common factor of the numerator and denominator in the expression
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3 years ago
What is the area of the shaded region?
kolezko [41]

Answer:

110 cm^2

Step-by-step explanation:

The first thing that you need to do is find the area of triangle AFE. The area of a triangle is always base*height/2. So in this case, that would be 10*6 divided by 2, which is 30 cm. Next, you will need to know the area of triangle ECB. Using that same formula, you will get 8*10/2, which is 40 cm. Finally, you will need to find the area of the whole rectangle. The area of a rectangle is always the length times the width. In this case, you would have 10*18, which is 180 cm. To get your final answer, you need to subtract the areas of the unshaded area from the whole area. That would be 180-(30+40), which is 110 cm. I hope this helped!

6 0
3 years ago
Why is 4 4/10 greater than 32/10?
Elena-2011 [213]

Answer:

Because

Step-by-step explanation:

4 4/10 = 4.4  and  32/10 = 3.2

4.4 is bigger than 3.2 so that's why 4 4/10 is bigger.

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