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Vadim26 [7]
3 years ago
11

Raul is performing an experiment. He pours water into a glass and measures the temperature of the water at 72.3°F. Then he adds

a few ice cubes to the glass of water. He measures the temperature of the water again and finds that it has changed by -39.1°F.Complete the steps below to learn more about the temperature change of the water.Write an expression that represents the temperature (in degrees Fahrenheit) of the water after Raul added the ice cubes. Write the expression as the sum of two numbers.
Please help, and just know that I'm gonna be asking more questions about math because I'm terrible at math.
Mathematics
2 answers:
Ber [7]3 years ago
7 0

Answer:

temperature of the water, after Raul  added the ice cubes is 72.3 + (-39.1)

HOPED I HELPED PLS MARK BRAINLIST TO ME☺️

____ [38]3 years ago
4 0

Answer:

The answer is the temperature of the water (in degrees Fahrenheit) after Raul after Raul added the ice cubes is 72.3 + (-39.1)

Step-by-step explanation:

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10 + 3x < 4 or 2x + 5 > 11 in interval notation​
Stella [2.4K]

Answer:

( − ∞ , ∞ ) hope i help

Step-by-step explanation:

First, solve each inequality. I'll solve the first one first.

7 ≥ 2 x − 5

12 ≥ 2 x

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Therefore, x could be any number less than or equal to 6. In interval notation, this looks like:

( − ∞ , 6 ]

The parenthesis means that the lower end is not a solution, but every number above it is. (In this case, the lower end is infinity, so a parenthesis must be used, since infinity is not a real number and so it cannot be a solution.) The bracket means that the upper end is a solution. In this case, it indicates that not only could  

x

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Let's try the second example:

3 x − 2 4 > 4

3 x − 2 > 16    3 x > 18 x > 6

Therefore, x could be any number greater than 6, but x couldn't be 6, since that would make the two sides of the inequality equal. In interval notation, this looks like:

( 6 , ∞ )  

The parentheses mean that neither end of this range is included in the solution set. In this case, it indicates that neither 6 nor infinity are solutions, but every number in between 6 and infinity is a solution (that is, every real number greater than 6 is a solution).

Now, the problem used the word "OR", meaning that either of these equations could be true. That means that either  x  is on the interval  ( − ∞ , 6 ] or the interval  ( 6 , ∞ )

. In other words,  x

is either less than or equal to 6, or it is greater than 6. When you combine these two statements, it becomes clear that  

x

could be any real number, since no matter what number  

x

is, it will fall in one of these intervals. The interval "all real numbers" is written like this:

( − ∞ , ∞ )

6 0
3 years ago
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Answer:

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