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IRINA_888 [86]
3 years ago
5

If x:y=5:3 then (8x-5y): (8x+5y)=?​

Mathematics
1 answer:
Anni [7]3 years ago
5 0
The correct answer is 5:11
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List the factores of 28 Is this number prime or composite
Igoryamba
Twenty eight is composite

28 can be divided by one, by itself and at least by 2 and 7
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2 years ago
How do you write 5y-9=0 in standard form?
shepuryov [24]

Answer:

5y=9

Step-by-step explanation:

5 0
3 years ago
The sides of a triangle have lengths of x, x + 5, and 25. If the longest side is 25, which of the following values of x would ma
Amiraneli [1.4K]
In a right angle, the sum of the squares of the two shorter sides is equal to the square of the longest side.
Here, the longest side is 25, the shorter sides are x and x+5.

x^2+(x+5)^2=25^2 \\
x^2+x^2+10x+25=625 \\
2x^2+10x+25=625 \ \ \ |-625 \\
2x^2+10x-600=0 \ \ \ |\div 2 \\
x^2+5x-300=0 \\
x^2+20x-15x-300=0 \\
x(x+20)-15(x+20)=0 \\
(x-15)(x+20)=0 \\
x-15=0 \ \lor \ x+20=0 \\
x=15 \ \lor \ x=-20


The length of a side must be a positive number, so x=15.
The answer is C.
6 0
4 years ago
The total area of both plots of land is?
VikaD [51]

You have 2x^2 + 9x -9 and 3x^2 -2x +14

To find total area add the two polynomials together by combining the like terms.


2x^2 + 3x^2 = 5x^2

9x + -2x = 9x-2x = 7x

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Total area = 5x^2 + 7x + 5

7 0
4 years ago
Please help me!!!!!! I do not understand...
Tems11 [23]

Answer:

the second one........the shape of the conic section os circle

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