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2 years ago

0 If 3x+ 11 = 86-5 the x = ?

Mathematics

2 answers:

evablogger [386]2 years ago

7 0

The answer would be 23 1/3

Keith_Richards [23]2 years ago

6 0

Answer: x = 70/3

Step-by-step explanation:

Given equation

3x + 11 = 86 - 5

Simplify by subtraction

3x + 11 = 81

Subtract 11 on both sides

3x + 11 - 11 = 81 - 11

3x = 70

Divide 3 on both sides

3x / 3 = 70 / 3

$\boxed{x=\frac{70}{3} }$

Hope this helps!! :)

Please let me know if you have any questions

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Algebraic expression for 5 times a number

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3 years ago

Coffee company wants to make sure that their coffee is being served at the right temperature. If it is too hot, the customers co

andrey2020 [161]

Answer:

The average temperature of coffee in the sample, which is 70.2.

Step-by-step explanation:

The population is all the costumers. The company has determined that they want the average coffee temperature to be 65 degrees C. So, 65 degrees C is the average of the population.

The sample is the 20 orders. The mean $\mu$ of the sample is 70.2C(That is, the mean of the 20 orders0. So, the correct answer is:

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3 0

3 years ago

What is the mass of 2.5 moles of carbon dioxide?

GarryVolchara [31]

Answer:

110 grams

Step-by-step explanation:

CO2 molecule is made up of Carbon (atomic mass =12) and oxygen (atomic mass=16).

So first finding the mass of 1 molecule of CO2 which is equals to

= mass of 1 carbon atom + masses of 2 oxygen atom, we get

= 12+(16*2)= 12+32= 44 a.m.u.

Now 1 molecule of CO2 has mass 44 amu so mass of 1 mole CO2 will be 44 grams.( 1 a.m.u.=1.6729*10^-33 grams. 1 mole = 6.022*10^23, so 44 a.m.u.=73.6076*10^-33 grams approx. For one mole CO2, 73.6076*10^-33*6.022*10^23 which is approximately equals to 44 grams. )

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So our answer is 110 grams.

lowkey hope this helped you, good luck whatever you need it for Imaooo

3 0

3 years ago

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3 years ago

What is the GCF of 90 and 190?

IrinaVladis [17]

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The common factors of 90 and 190 are :

1,2,5 and 10.

The greatest one among these is, 10. So the greatest factor of 90 and 190 is 10.

7 0

3 years ago

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