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kow [346]
3 years ago
12

Evaluate 2 times 3 to the power of 2 minus 5

Mathematics
2 answers:
shepuryov [24]3 years ago
4 0
2* 3^2 - 5 = 18-5 = 13
the answer would be 13
bekas [8.4K]3 years ago
3 0
The answer is 13 common sense

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Is it possible to make a quadrilateral with any four dots as corners?
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Answer:

Yes it is possible, given with 4 dots, lets say were set anywhere within a page or anywhere upon a circumference of a circle even. We can draw 4 straight lines to meet each corner and call this a quadrilateral.

Step-by-step explanation:

Squares, Rectangles and Rhombuses are all Parallelograms and squares and rectangles are regular quadrilaterals!

So any other 4 sided shape that is quadrilateral could be made.

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Which expression is equivalent to -2 (5x-.75)
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-10x + 1.5

Step-by-step explanation:

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3 years ago
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!000000000 to the 5th power?
Elena L [17]

Answer:

i will just give you the answer <u><em>1e+45</em></u>

Step-by-step explanation:

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3 years ago
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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. )

1 mole CO2= 44grams, so 2.5 moles = 44*2.5= 110 grams

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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