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jeyben [28]
3 years ago
14

Anybody know this struggling all day with these math questions

Mathematics
1 answer:
Inga [223]3 years ago
5 0

Answer:

its (-1/2,-5/2),(2,5)

Step-by-step explanation:

Substitute 2x2−3 for y into y=3x−1then solve for x.

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26 divided by 000.0000000009
Flura [38]

Answer:

undefined

Step-by-step explanation:

The expression contains a division by  

0

The expression is undefined.

Undefined

7 0
3 years ago
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The American Civil War was a civil war in the United States from 1861 to 1865, fought between northern states loyal to the Union
Sloan [31]

Answer:

The American Civil War was a civil war in the United States from 1861 to 1865, fought between northern states loyal to the Union and southern states that had seceded to form the Confederate States of America.

Why do phase changes occur?

1. Compare: Set the Water temperature to 0 °C and click Play. Observe the water molecules.

Click Reset, set the Water temperature to 100 °C, and click Play again.

What do you notice? The water molecules are moving slightly faster at 100 °C than at 0 °C.

[Note: This difference may be too small to observe easily.]

2. Observe: Click Reset. The mean molecular speed of the water molecules is displayed

below the container. Set the Water temperature to 0 °C and Add/remove heat energy to

400 J/s. Click Play.

A. How does the mean speed of the water molecules change as they are heated?

The average speed of water molecules increases as they are heated.

B. Does the mean molecular speed change as much as the temperature as the

water heats up? Explain.

Sample answer: For each degree of temperature change, the mean molecular

speed increases by about 1 m/s. At 100 °C, the mean molecular speed is about

17% faster than at 0 °C.

3. Explain: How is temperature related to the motions of molecules?

The higher the temperature, the faster the molecules move.

4. Observe: Click Reset. Set the Water temperature to 20 °C and the Ice volume to 50 cc.

Set Add/remove heat energy to 0 J/s. Click Play. How do the molecules in the liquid

interact with the molecules in the solid?

The molecules of the liquid collide with the molecules of solid, gradually breaking the bonds

between the molecules in the solid and causing the ice to melt.

Step-by-step explanation:

7 0
2 years ago
If f(x)=x2-2x and g(x)=6x=4, for which value of x does (f+g)(x)=0
zhenek [66]
X = -2
hope it helps (: 
7 0
3 years ago
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Find the distance between this pair of parallel lines. These equations are in slope- intercept form.
garri49 [273]
Distance is -2 my dude
8 0
3 years ago
An artist is using tiles and boards for a project. A tile has length 1/3 ft and width 1/3 ft. A board has length 1/2 yd and widt
ahrayia [7]

Step-by-step explanation:

Length of title to board = (1/3) : (1/2) = 2 : 3.

Area of tile to board = (1/3)² : (1:2)² = 4 : 9.

7 0
2 years ago
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