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Anestetic [448]
3 years ago
15

HELP ASAP PLZ. This is vital to my math grade, This is the first of three questions I have. It is interval notation. The answer

is not no solution because I have tried that already. I will award 100 pts and brainly to whoever can give me the correct answer. This is vital to my math grade. HELP HELP HELP PLZ. I need an equation like this for an answer. This equation I'm putting in is not the solution. It is an example of the format of the answer i need. An example of an answer that is not the answer but the format I need the answer in is (-∞,-9]U[-1,∞). Again this is not the answer to the problem. So HELP HELP HELP Plz

Mathematics
1 answer:
katen-ka-za [31]3 years ago
8 0

Answer:

Step-by-step explanation:

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The slope of this line is 1







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3 years ago
Reverse the two digits of my age, divide by three, add 20, and the result is my age. How many years old am I
lapo4ka [179]

Answer:

  • 48 years old.

Step-by-step explanation:

Let the age be xy or 10x + y.

Reverse the two digits of my age, divide by three, add 20, and the result is my age, convert this to equation:

  • (10y + x)/3 + 20 = 10x + y
  • (10y + x)/3 = 10x + y - 20
  • 10y + x = 3(10x + y - 20)
  • 10y + x = 30x + 3y - 60
  • 30x - x + 3y - 10y = 60
  • 29x - 7y = 60

We should consider both x and y are between 1 and 9 since both the age and its reverse are 2-digit numbers.

Possible options for x are:

  • 29x ≥ 7*1 + 60 = 67 ⇒ x > 2, at minimum value of y,

and

  • 29x ≤ 7*9 + 60 = 123 ⇒ x < 5, at maximum value of y.

So x can be 3 or 4.

<h3>If x = 3</h3>

  • 29*3 - 7y = 60
  • 87 - 7y = 60
  • 7y = 27
  • y = 27/7, discarded as fraction.

<h3>If x = 4</h3>

  • 29*4 - 7y = 60
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So the age is 48.

6 0
1 year ago
Find - 2 2/6 + (5/6)
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Answer:-3/2

Step-by-step explanation:

-2 2/6+5/6

-7/3 + 5/6

(2x-7+1x5) ➗ 6

(-14+5) ➗ 6

-9 ➗ 6

-9/6=-3/2

5 0
3 years ago
Solve for R<br><br> 3 r + 4 <br> ---------- = 5 <br> 2<br><br> r = ?
lakkis [162]
To find r, first write out the equation:
\frac{3r+4}{2} =5
Next, multiply both sides by 2:
3r+4=10
Now, subtract both sides by 4:
3r = 6
Divide both sides by 3:
r=2

The answer to this problem is r = 2. Hope this helps and have a phenomenal day!
6 0
3 years ago
Read 2 more answers
What's three different ways to write a negative 1/2
Irina-Kira [14]
- 0.5

\frac{-1}{2}

\frac{1}{-2}

Hope this helps
7 0
3 years ago
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