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Vanyuwa [196]
2 years ago
7

20= -x + (x squared) solve for x

Mathematics
2 answers:
Sauron [17]2 years ago
4 0
Here is your answer:

x=5

x=-4

MArishka [77]2 years ago
3 0

Answer:

Step-by-step explanation:

x = 5

x= -4

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Last week, a store sold laptops worth a total of $10,885. Each laptop cost $1,555. Hoy many laptops did the store sell last week
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luda_lava [24]
The answer will be 0-4
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X + y = -15<br> rewrite in y=mx+b
diamong [38]

Answer:

y = -x - 15

Step-by-step explanation:

x + y = -15

-x        -x

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5 0
3 years ago
Twice a certain whole number subtracted from 3 times the square of the number leaves 133. Find the number
user100 [1]

Answer:

7

Step-by-step explanation:

"a certain whole number" is a number that we don't know, so pick a variable, let's use n

"Twice" means two times, so we'll use 2n for this.

"subtracted from" means the 2n will be AFTER the minus sign.

____ - 2n

What goes in front? "3 times the square of the number" 3n^2

Now we have 3n^2 - 2n

Lastly, we see the result is 133. So this gives us:

3n^2 - 2n = 133 To solve, subtract 133 from both sides of the equation.

3n^2 -2n - 133 = 0 Next FACTOR.

(3n + 19)(n - 7) = 0

3n+19=0 and n-7=0

n=-19/3 and n=7

Since we are looking for a whole number choose n=7

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