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Nezavi [6.7K]
3 years ago
12

Identify the espression that is not equal to the other three

Mathematics
2 answers:
Katen [24]3 years ago
8 0
Can you please tell us the equations or expressions?
dolphi86 [110]3 years ago
7 0
15 - |-5| = 10
|-4| + 6 = 10
-|7 + 3| = -10 
<span>|-10| = 10 

-|7 + 3| is not equivalent. </span>
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grigory [225]

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10. Simplify each 12x°(x-4) x=6​
valentinak56 [21]

Answer: 144

Step-by-step explanation:

since x=6  and im assuming ° means multiplication

12(6) times (6-4)

72 times 2

144

7 0
3 years ago
Read 2 more answers
PLEASE HELP ASAP 30 POINTS!!! WILL GIVE BRAINLIEST!!
r-ruslan [8.4K]

1. The factoring step is

sin²<em>θ</em> - cos²<em>θ</em> sin²<em>θ</em> = sin²<em>θ</em> (1 - cos²<em>θ</em>)

Then the Pythagorean identity is invoked:

cos²<em>θ</em> + sin²<em>θ</em> = 1   →   1 - cos²<em>θ</em> = sin²<em>θ</em>

so that

sin²<em>θ</em> - cos²<em>θ</em> sin²<em>θ</em> = sin²<em>θ</em> sin²<em>θ</em> = sin⁴<em>θ</em>

(third option)

<em />

2. Recall that <em>a</em> ² - <em>b</em> ² = (<em>a</em> - <em>b</em>) (<em>a</em> + <em>b</em>). The numerator here is such a difference of squares:

csc²<em>x</em> - 1 = (csc<em>x</em> - 1) (csc<em>x</em> + 1)

Then

(csc²<em>x</em> - 1) / (1 + sin<em>x</em>) = ((csc<em>x</em> - 1) (csc<em>x</em> + 1)) / (1 + sin<em>x</em>)

Recall that csc<em>x</em> = 1/sin<em>x</em>, so rewrite this as

… = ((1/sin<em>x</em> - 1) (1/sin<em>x</em> + 1)) / (1 + sin<em>x</em>)

In the numerator, pull out a factor of 1/sin<em>x</em> from both terms:

… = (1/sin<em>x</em> (1 - sin<em>x</em>) × 1/sin<em>x</em> (1 + sin<em>x</em>)) / (1 + sin<em>x</em>)

… = ((1 - sin<em>x</em>) (1 + sin<em>x</em>)) / (sin²<em>x</em> (1 + sin<em>x</em>))

Cancel the common factor of 1 + sin<em>x</em> :

… = (1 - sin<em>x</em>) / sin²<em>x</em>

Expand the fraction and rewrite sin in terms of csc :

… = 1/sin²<em>x</em> - sin<em>x</em>/sin²<em>x</em>

… = 1/sin²<em>x</em> - 1/sin<em>x</em>

… = csc²<em>x</em> - csc<em>x</em>

Factor out csc<em>x</em> to get the second option,

… = csc<em>x</em> (csc<em>x</em> - 1)

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3 years ago
Y = x2 - 6x - 8
Usimov [2.4K]

Answer:

I think type answer is A

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3 years ago
PLZ HELP
Kryger [21]
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Day 4: 8,000
Day 5: 4,000

As each day goes by, half of the population is gone.
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