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3 years ago

Someone answer urgent and if so I will mark brainliest

Mathematics

2 answers:

german3 years ago

7 0

Answer:

the answer is D

Step-by-step explanation:

PilotLPTM [1.2K]3 years ago

4 0

Answer:

A is the correct answer.

Step-by-step explanation:

- B, C, and D are wrong because those only move the position of the shape, which means they are still congruent.

- 1/7x means the shape will get smaller and therefore not be congruent.

- Congruent means they have the same size and shape. All have the same size and shape, but A and therefore that is the correct answer pertaining to this problem.

- Hope this helps! if you need a further explanation or help on any other problems please let me know. I would be glad to help anytime.

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4 years ago

The volume of a gas varies directly with its temperature and inversely with the pressure. If the volume of a certain gas is 15 c

vladimir2022 [97]

Answer:

Therefore the volume of the gas is 32 cubic feet.

Step-by-step explanation:

Given that,

The volume of a gas varies directly with its temperature and inversely with the pressure.

$V\propto \frac{T}{P}$

V= Volume of the gas at constant mass

T= Temperature at constant mass

P= pressure at constant mass

$\frac{V_1}{V_2}=\frac{\frac{T_1}{T_2}}{\frac{P_1}{P_2}}$

$\therefore \frac{V_1}{V_2}=\frac{T_1P_2}{T_2P_1}$ .

Given that,

At constant mass, the volume of a certain gas is 15 cubic feet and a pressure of 40 pound per square inch at a temperature 300 k.

$V_1$ =15 cubic feet, $P_1$ =40 pound per square inch and $T_1$ = 300 K

$V_2=?$ , $P_2$ =20 pound per square inch and $T_2$ = 320k

$\therefore \frac{V_1}{V_2}=\frac{T_1P_2}{T_2P_1}$ .

Plugging all values

$\frac{15}{V_2}=\frac{300\times 20}{320\times 40}$

$\Rightarrow V_2=\frac{15\times 320\times 40}{300\times 20}{}$

$\Rightarrow V_2=32$ cubic feet

Therefore the volume of the gas is 32 cubic feet.

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Answer:

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