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vova2212 [387]
3 years ago
12

What is the factored form of this expression? 18x2 - 50

Mathematics
2 answers:
Firdavs [7]3 years ago
8 0

Answer:

first you should multiply 18 and 2 then it will come 36 then subtract 36 and 50 then the answer will come -14

Neporo4naja [7]3 years ago
5 0
The answer to this question is “-14”
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Mama L [17]
<h3>Answer:</h3>

Length: 12 yd

Width: 5.5 yd

<h3>Explanation:</h3>

Let x represent the width of the rectangle in yards. Then 2x+1 can represent the length (double the width plus 1 yard). The area is the product of length and width so we have the relation ...

... x(2x+1) = 66

... 2x² +x -66 = 0

This can be solved using any of several methods. One of them is to factor the equation. To do that, we can look for factors of 2·66 = 132 that differ by 1. Since 132 = 11·12, those are the numbers we're looking for. Then ...

... 2x² +12x -11x -66 = 0 . . . . use our found numbers to rewrite the x term

... 2x(x +6) -11(x +6) = 0 . . . . .factor by grouping

... (2x -11)(x +6) = 0

... x = 11/2 or -6 . . . . . values that make the factors zero. Only the positive value is a useful solution.

... The width of the rectangle is 5.5 yards. Its length is 2·5.5+1 = 12 yards,

7 0
3 years ago
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He studied for 8617.5 minutes.
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PLEASE HELP ME!! Simplify by multiplying the LCD
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Answer:

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Lets say, for ease, that the vat can hold a total of 70 gallons (or whatever you would like to use.) Use whatever number you want, I just picked this because it gives us a lot of clean numbers. 

Now, if the inlet can fill it in 7 hours, that means that it is adding 10 gallons per hour. (70 gal/7 hours = 10 gal/hr)

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6 0
3 years ago
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