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NemiM [27]
2 years ago
6

Can anyone help answer all these questions

Mathematics
1 answer:
muminat2 years ago
7 0

Answer:

A -2,-3, B 0,-3  C -1,1

Step-by-step explanation:

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Can someone please solve 5-2x<7
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Add 2x and subtract 7
   5 -2x +2x < 7 +2x . . . . . . showing 2x added
   5 < 7 +2x . . . . . . . . . . . .. simplified
   5 -7 < 7 -7 +2x . . . . . . . . showing 7 subtracted
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Now, divide by 2
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Boyle's Law states that when a sample of gas is compressed at a constant temperature, the pressure P and volume V satisfy the eq
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Answer:

The value of rate of decrease of volume = - 3600 \frac{k pa}{min}

Step-by-step explanation:

According to Boyle's law P V = C ------- (1)

Pressure ( P ) = 100 k pa = 10 \frac{N}{cm^{2} }

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Put these values in equation ( 1 ) we get,

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Differentiate Equation ( 1 ) with respect to time we get,

⇒ V \frac{dP}{dt} + P \frac{dV}{dt} = 0

⇒ V \frac{dP}{dt} = - P \frac{dV}{dt}

⇒ \frac{dV}{dt} = - \frac{V}{P} \frac{dP}{dt} ---------- (2)

This equation gives the rate of decrease of volume.

Given that Rate of increase of pressure = \frac{dP}{dt} = 40 \frac{k pa}{min}

C = 90 N-m

P =  10^{5} pa = 10 \frac{N}{cm^{2} }

V = 900 cm^{3}

Put all the above values in equation 2 we get,

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This is the value of rate of decrease of volume.

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3 years ago
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Step-by-step explanation:

Setting up and solving an equation of ratios is one of the fastest ways in which to solve this kind of probelm.

183 miles         3 hrs

-------------- = ------------

       x              11 hrs

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Sorry man I’m not good at math or school in general
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