Answer:
Step-by-step explanation:
1 2/3 (5 2/7)
1/3 ln(<em>x</em>) + ln(2) - ln(3) = 3
Recall that
, so
ln(<em>x</em> ¹ʹ³) + ln(2) - ln(3) = 3
Condense the left side by using sum and difference properties of logarithms:
![\log_b(m)+\log_b(n)=\log_b(mn)](https://tex.z-dn.net/?f=%5Clog_b%28m%29%2B%5Clog_b%28n%29%3D%5Clog_b%28mn%29)
![\log_b(m)-\log_b(n)=\log_b\left(\dfrac mn\right)](https://tex.z-dn.net/?f=%5Clog_b%28m%29-%5Clog_b%28n%29%3D%5Clog_b%5Cleft%28%5Cdfrac%20mn%5Cright%29)
Then
ln(2/3 <em>x</em> ¹ʹ³) = 3
Take the exponential of both sides; that is, write both sides as powers of the constant <em>e</em>. (I'm using exp(<em>x</em>) = <em>e</em> ˣ so I can write it all in one line.)
exp(ln(2/3 <em>x</em> ¹ʹ³)) = exp(3)
Now exp(ln(<em>x</em>)) = <em>x </em>for all <em>x</em>, so this simplifies to
2/3 <em>x</em> ¹ʹ³ = exp(3)
Now solve for <em>x</em>. Multiply both sides by 3/2 :
3/2 × 2/3 <em>x</em> ¹ʹ³ = 3/2 exp(3)
<em>x</em> ¹ʹ³ = 3/2 exp(3)
Raise both sides to the power of 3:
(<em>x</em> ¹ʹ³)³ = (3/2 exp(3))³
<em>x</em> = 3³/2³ exp(3×3)
<em>x</em> = 27/8 exp(9)
which is the same as
<em>x</em> = 27/8 <em>e</em> ⁹
Answer:
$899.15
0.85(1199) - 120
Step-by-step explanation:
To find the purchase total, multiply the price by the percent paid and subtract the certificate.
The store offers a 15% discount. This means you pay 85% of the price. So the discounted price is 0.85(1199) = 1019.15
Subtract the certificate 1019.15 - 120 = 899.15
The composite function is 0.85(1199) - 120.
Answer:
27/5 or 5 2/5
Step-by-step explanation:
Assuming you mean 9 x 3/5
The answer would be
27/5
in Decimals, it would be
5.4
and in mixed numbers form it would be
5 2/5
Step-by-step explanation:
We use
![a ^{2} - \times ^{2} = (a - \times )(a + \times )](https://tex.z-dn.net/?f=a%20%5E%7B2%7D%20%20-%20%20%5Ctimes%20%5E%7B2%7D%20%20%3D%20%28a%20-%20%20%5Ctimes%20%29%28a%20%2B%20%20%5Ctimes%20%29)
Now we have
![\frac{ { \times }^{2} }{9} - 64 = ( \frac{ \times }{3} ) ^{2} - {8}^{2} \\ = ( \frac{ \times }{3} - 8)( \frac{ \times }{3} + 8)](https://tex.z-dn.net/?f=%20%5Cfrac%7B%20%7B%20%5Ctimes%20%7D%5E%7B2%7D%20%7D%7B9%7D%20%20-%2064%20%3D%20%28%20%5Cfrac%7B%20%5Ctimes%20%7D%7B3%7D%20%29%20%5E%7B2%7D%20%20-%20%20%7B8%7D%5E%7B2%7D%20%20%5C%5C%20%20%3D%20%28%20%5Cfrac%7B%20%5Ctimes%20%7D%7B3%7D%20%20-%208%29%28%20%5Cfrac%7B%20%5Ctimes%20%7D%7B3%7D%20%20%2B%208%29)
Hope that useful for you