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3 years ago

Solve the equation 5(a – 7) + 11 = 2a – 3(a + 4) for a

Mathematics

2 answers:

Lady bird [3.3K]3 years ago

6 0

The answer is a equals 6.

Monica [59]3 years ago

3 0

5(a – 7) + 11 = 2a – 3(a + 4)

5a - 35 + 11 = 2a - 3a - 12

5a - 24 = -a - 12

add a to both sides

5a - 24 + a = -a -12 + a

simplify

6a - 24 = -12

add 24 to both sides

6a - 24 + 24 = -12 + 24

simplify

6a = 12

divide both sides by 6

6a/6 = 12/6

simplify

a = 2

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3 years ago

Determine the temperature of 2.6 moles of gas contained in a 5.00-L vessel at a pressure of 1.2atm.

strojnjashka [21]

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28.108 K.

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Given: Pressure (P)= 1.2atm

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Now finding the temperature (T).

Formula; T= $\frac{P\times V}{n\times R}$

R is a constant factor which makes other factors work together.

There is a numerical value for R which we use is $0.0821 \times \frac{L.atm}{mole.K}$

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