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WINSTONCH [101]
3 years ago
7

9x = -36

Mathematics
1 answer:
Verizon [17]3 years ago
5 0

Answer:

The answer is -4

so x= negative 4

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<img src="https://tex.z-dn.net/?f=%5Clfloor%5Cdfrac%7Bx%5E2%2B1%7D%7B10%7D%5Crfloor%2B%5Clfloor%5Cdfrac%7B10%7D%7Bx%5E2%2B1%7D%5
GrogVix [38]

Answer:

  • See below

Step-by-step explanation:

This equation is solved if one of the following 2 conditions is met

1.

  • (x² + 1) / 10 is between 1 and 2

and

  • 10 / (x² + 1)  is between 0 and 1

<u>Solve this:</u>

  • 1 < (x² + 1) / 10 < 2
  • 10 < x² + 1 < 20
  • 9 < x² < 19
  • 3 < |x| < √19
  • x ∈ (- √19, - 3) ∪ (3, √19)
  • 0 < 10 / (x² + 1) < 1
  • x² + 1 > 10
  • x² > 9
  • |x| > 3

Solution for this case is x ∈ (- √19, - 3) ∪ (3, √19)

2.

  • (x² + 1) / 10 is between 0 and 1

and

  • 10 / (x² + 1)  is between 1 and 2

<u>Solve this:</u>

  • 0 < (x² + 1) / 10 < 1
  • 0 < x² + 1 < 10
  • - 1 < x² < 9
  • 0 ≤ |x| < 3
  • x ∈ ( - 3, 3)
  • 1 < 10 / (x² + 1) < 2
  • x² + 1 < 10 ⇒ x² < 9 ⇒ |x| < 3
  • x² + 1 > 5 ⇒ x² > 5 ⇒ |x| > √5

Solution for this case is x ∈ (- 3, - √5) ∪ (√5, 3)

8 0
3 years ago
Last month you spent $30 on clothing. This month you spent 150% of what you spent last month. How much did you spend this month?
mafiozo [28]

Answer:

you spent 45 dollars this month

6 0
3 years ago
Read 2 more answers
PLEASE HELPPPPPPP!!! Im so confused
elixir [45]

Answer:

b

Step-by-step explanation:

3 0
3 years ago
1. Mildred Dunbar works as a waitress at Famous Foods.
vovangra [49]

Answer:

310

Step-by-step explanation:

1.75×39=68.25

241.75+68.25=310

6 0
3 years ago
What 6 ways can you write 835,000
igomit [66]
Here are the 6 ways to write 835 000
1st way = word form way
=> eight hundred thirty five thousands.
2nd way = place value form
=> 8 hundred thousand 3 ten thousand 5 thousand
3rd way = expanded form
=> 800 000 + 30 000 + 5 000
4th way = algebraic form
=> 835 000
5th way = numeric addition form
=> 800 000 + 35 000
6th way = fraction form
=> 835 000 / 1






8 0
3 years ago
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