HELPㅔPLS! BOTS STAY AWAY!! The mean amount of money withdrawn from
2 answers:
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I'm assuming your allowed to use a calculator for this? That's what I would do.
To go about the fraction, take the whole number and times it by the denominator, then add in the numerator to create a new fraction(a whole one not mixed). Then simply divide the numerator by the denominator.
193 is the new numerator and the new whole fraction is this and dividing it out gives you,
For the third one, just input it into a calculator,
To go about the fraction, take the whole number and times it by the denominator, then add in the numerator to create a new fraction(a whole one not mixed). Then simply divide the numerator by the denominator.
193 is the new numerator and the new whole fraction is this and dividing it out gives you,
For the third one, just input it into a calculator,
ANSWER
EXPLANATION
The given equation is:
Group similar terms to obtain:
Simplify similar terms,
Divide both sides by -2.5
Answer: Lattice parameter, a = (4R)/(√3)
Step-by-step explanation:
The typical arrangement of atoms in a unit cell of BCC is shown in the first attachment.
The second attachment shows how to obtain the value of the diagonal of the base of the unit cell.
If the diagonal of the base of the unit cell = x
(a^2) + (a^2) = (x^2)
x = a(√2)
Then, diagonal across the unit cell (a cube) makes a right angled triangle with one side of the unit cell & the diagonal on the base of the unit cell.
Let the diagonal across the cube be y
Pythagoras theorem,
(a^2) + ((a(√2))^2) = (y^2)
(a^2) + 2(a^2) = (y^2) = 3(a^2)
y = a√3
But the diagonal through the cube = 4R (evident from the image in the first attachment)
y = 4R = a√3
a = (4R)/(√3)
QED!!!
