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Elden [556K]
2 years ago
15

Dry ice is carbon dioxide in a solid state. Its freezing point is –78.5°C. You use dry ice to freeze liquid mercury that is at r

oom temperature, or 22°C. How many degrees Celsius does the temperature of the mercury need to drop?
Mathematics
2 answers:
Triss [41]2 years ago
5 0

Answer:

3.568

Step-by-step explanation:

finlep [7]2 years ago
4 0

Answer:

you subtract to get the amount of what your lookin for my plueshure

Step-by-step explanation:

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The angle measures of a triangle are (6x + 6)°, (8x - 8)°, and (12x)°. The triangle can be classified as?
Aleks [24]

Answer:

Acute triangle

Step-by-step explanation:

If you add up are those angle equations, set it equal to 0, 26x - 2 = 180, you get x = 7/ Plug that back into each equation, and you realize none of the angles are more than 90. This makes it an acute triangle.

8 0
3 years ago
Read 2 more answers
Bradley had 25 baseball cards in his collection. He receives x number of baseball cards for his birthday.
Vinil7 [7]

Answer:

my friends last name is bradley

Step-by-step explanation:

4 0
2 years ago
Does the order in which you add two integers with the same sign affect the sum
kondor19780726 [428]
If you add positive 5 and positive 5, you'll get positive 10.
If you add positive 5 and negative 5, you'll get positive 0.
If you add negative 5 and negative 5, you'll get negative 10.

-5 + 5 = -5 + 5
5 + 5 = 5 + 5
- 5 + -5 = -5 + -5

Does that help your question?
6 0
3 years ago
5.3.4 Journal: Two-Variable Systems Elimination <br><br> I need urgent help
max2010maxim [7]

Answer:

1) X stands for individual acts and y,  group acts. 2) Each scenario describes a different period in minutes, but each one respecting their different amounts (individual and group acts). 3) S=\left \{ 5,10 \right \}

Step-by-step explanation:

Completing with what was found:

<em> 1) Here is a summary of the scenario your classmate presented for the talent show:Main show The main show will last two hours and will include twelve individual acts and six group acts.Final show The final show will last 30 minutes and will include the top four individual acts and the top group act.The equations he came up with are: 12x+ 6y= 120, 4x+ y= 30</em>

1. What do x and y represent in this situation?

X stands for individual acts and y,  group acts.

Besides that, In the system of equation, they represent the time for x, and the time for y.

2. Do you agree that your classmate set up the equations correctly? Explain why or why not.

Yes, that's right. Each scenario describes a different period in minutes, but each one respecting their different amounts (individual and group acts). Either for 120 minutes or 30 minutes length. And their sum totalizing the whole period.

3. Solving the system by Elimination

\left\{\begin{matrix}12x+ 6y= 120\\ 4x+ y= 30\end{matrix}\right.\\\left\{\begin{matrix}12x+ 6y= 120\\ 4x+ y= 30\:*(-3)\end{matrix}\right.\\\left\{\begin{matrix}12x+ 6y= 120\\ -12x+ -3y= -90\end{matrix}\right.\\3y=30\Rightarrow y=10\\4x+(10)=30\Rightarrow 4x=20\Rightarrow x=5\\S=\left \{ 5,10 \right \}

8 0
3 years ago
I need help please (+5)+(-2)=
jasenka [17]
That is basically 5 - 2 I believe so the answer is 3.
4 0
2 years ago
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