Answer:
The Communicative Property of Multiplication
Step-by-step explanation:
Answer: 1
Step-by-step explanation:
Given:
Geraldo current age = 25years.
Policy being considered for = 30years
Age at the end of the policy = 55years
What is the probability that Geraldo lives to be 55years.
Therefore
P ( A + B ) = 25 /55 + 30 / 55
= 5 / 11 + 6 / 11
= 11 / 11
= 1
Answer:
c. x ≈ 1.71, y ≈ 6.29, z ≈ 60.71
Step-by-step explanation:
You are at a bit of a disadvantage with this problem, because both the hint and the answer choices are incorrect.
The matrix equation is ...
![AX=B\\\\\left[\begin{array}{ccc}-1&1&0\\4&3&0\\1&-7&1\end{array}\right]\left[\begin{array}{c}x&y&z\end{array}\right]=\left[\begin{array}{c}8&12&15\end{array}\right]](https://tex.z-dn.net/?f=AX%3DB%5C%5C%5C%5C%5Cleft%5B%5Cbegin%7Barray%7D%7Bccc%7D-1%261%260%5C%5C4%263%260%5C%5C1%26-7%261%5Cend%7Barray%7D%5Cright%5D%5Cleft%5B%5Cbegin%7Barray%7D%7Bc%7Dx%26y%26z%5Cend%7Barray%7D%5Cright%5D%3D%5Cleft%5B%5Cbegin%7Barray%7D%7Bc%7D8%2612%2615%5Cend%7Barray%7D%5Cright%5D)
Contrary to what the hint is telling you, the multiplication by the inverse must be on the left:

Using appropriate tools to compute the inverse, this becomes ...
![\left[\begin{array}{c}x&y&z\end{array}\right]=\dfrac{1}{7}\left[\begin{array}{ccc}-3&1&0\\4&1&0\\31&6&7\end{array}\right]\left[\begin{array}{c}8&12&15\end{array}\right]\\\\\left[\begin{array}{c}x&y&z\end{array}\right]=\dfrac{1}{7}\left[\begin{array}{c}-12&44&425\end{array}\right]\approx\left[\begin{array}{c}-1.714&6.286&60.714\end{array}\right]](https://tex.z-dn.net/?f=%5Cleft%5B%5Cbegin%7Barray%7D%7Bc%7Dx%26y%26z%5Cend%7Barray%7D%5Cright%5D%3D%5Cdfrac%7B1%7D%7B7%7D%5Cleft%5B%5Cbegin%7Barray%7D%7Bccc%7D-3%261%260%5C%5C4%261%260%5C%5C31%266%267%5Cend%7Barray%7D%5Cright%5D%5Cleft%5B%5Cbegin%7Barray%7D%7Bc%7D8%2612%2615%5Cend%7Barray%7D%5Cright%5D%5C%5C%5C%5C%5Cleft%5B%5Cbegin%7Barray%7D%7Bc%7Dx%26y%26z%5Cend%7Barray%7D%5Cright%5D%3D%5Cdfrac%7B1%7D%7B7%7D%5Cleft%5B%5Cbegin%7Barray%7D%7Bc%7D-12%2644%26425%5Cend%7Barray%7D%5Cright%5D%5Capprox%5Cleft%5B%5Cbegin%7Barray%7D%7Bc%7D-1.714%266.286%2660.714%5Cend%7Barray%7D%5Cright%5D)
The closest match is choice C.
Answer: The future value of the investment after 2 years is $807.8
Step-by-step explanation:
The formula for simple interest is expressed as
I = PRT/100
Where
P represents the principal or amount invested.
R represents interest rate
T represents time in years
I = interest after t years
From the information given
T = 2 years
P = $700
R = 7.7%
Therefore
I = (700 × 7.7 × 2)/100
I = 10780/100
I = 107.8
The total amount in the account after 2 years would be
700 + 107.8 = $807.8
Exponent properties help us to simplify the powers of expressions. The quotient of the given expression
is (2∛3 - ∛18).
<h3>What are the basic exponent properties?</h3>
![{a^m} \cdot {a^n} = a^{(m+n)}\\\\\dfrac{a^m}{a^n} = a^{(m-n)}\\\\\sqrt[m]{a^n} = a^{\frac{n}{m}}\\\\(a^m)^n = a^{m\times n}\\\\(m\times n)^a = m^a\times n^a\\\\](https://tex.z-dn.net/?f=%7Ba%5Em%7D%20%5Ccdot%20%7Ba%5En%7D%20%3D%20a%5E%7B%28m%2Bn%29%7D%5C%5C%5C%5C%5Cdfrac%7Ba%5Em%7D%7Ba%5En%7D%20%3D%20a%5E%7B%28m-n%29%7D%5C%5C%5C%5C%5Csqrt%5Bm%5D%7Ba%5En%7D%20%3D%20a%5E%7B%5Cfrac%7Bn%7D%7Bm%7D%7D%5C%5C%5C%5C%28a%5Em%29%5En%20%3D%20a%5E%7Bm%5Ctimes%20n%7D%5C%5C%5C%5C%28m%5Ctimes%20n%29%5Ea%20%3D%20m%5Ea%5Ctimes%20n%5Ea%5C%5C%5C%5C)
Given to us
![\dfrac{6 - 3(\sqrt[3]{6})}{\sqrt[3]{9}}](https://tex.z-dn.net/?f=%5Cdfrac%7B6%20-%203%28%5Csqrt%5B3%5D%7B6%7D%29%7D%7B%5Csqrt%5B3%5D%7B9%7D%7D)
We will solve the problem using the basic exponential properties,
![\dfrac{6 - 3(\sqrt[3]{6})}{\sqrt[3]{9}}\\\\ = \dfrac{6}{\sqrt[3]{9}} - \dfrac{3(\sqrt[3]{6})}{\sqrt[3]{9}}\\\\ = (6\cdot 3^{-\frac{2}{3}}) - [3 \cdot (2 \cdot 3)^{-\frac{2}{3}}3^{-\frac{2}{3}}]\\\\= (2 \cdot 3 \cdot 3^{-\frac{2}{3}}) - [3 \cdot 2^{-\frac{2}{3}} \cdot 3^{-\frac{2}{3}}3^{-\frac{2}{3}}]\\\\](https://tex.z-dn.net/?f=%5Cdfrac%7B6%20-%203%28%5Csqrt%5B3%5D%7B6%7D%29%7D%7B%5Csqrt%5B3%5D%7B9%7D%7D%5C%5C%5C%5C%20%3D%20%5Cdfrac%7B6%7D%7B%5Csqrt%5B3%5D%7B9%7D%7D%20-%20%5Cdfrac%7B3%28%5Csqrt%5B3%5D%7B6%7D%29%7D%7B%5Csqrt%5B3%5D%7B9%7D%7D%5C%5C%5C%5C%20%3D%20%286%5Ccdot%203%5E%7B-%5Cfrac%7B2%7D%7B3%7D%7D%29%20-%20%5B3%20%5Ccdot%20%282%20%5Ccdot%203%29%5E%7B-%5Cfrac%7B2%7D%7B3%7D%7D3%5E%7B-%5Cfrac%7B2%7D%7B3%7D%7D%5D%5C%5C%5C%5C%3D%20%282%20%5Ccdot%203%20%5Ccdot%203%5E%7B-%5Cfrac%7B2%7D%7B3%7D%7D%29%20-%20%5B3%20%5Ccdot%202%5E%7B-%5Cfrac%7B2%7D%7B3%7D%7D%20%5Ccdot%203%5E%7B-%5Cfrac%7B2%7D%7B3%7D%7D3%5E%7B-%5Cfrac%7B2%7D%7B3%7D%7D%5D%5C%5C%5C%5C)
![= [2 \cdot 3^{(1-\frac{2}{3})}] - [2^{\frac{1}{3}}\cdot 3^{(1+\frac{1}{3} - \frac{2}{3})}]\\\\= [2 \cdot 3^{(\frac{1}{3})}] - [2^{\frac{1}{3}}\cdot 3^{(\frac{2}{3})}]\\\\= 2\sqrt[3]{3} - \sqrt[3]{2}\sqrt[3]{9}\\\\=2\sqrt[3]{3} - \sqrt[3]{18}](https://tex.z-dn.net/?f=%3D%20%5B2%20%5Ccdot%203%5E%7B%281-%5Cfrac%7B2%7D%7B3%7D%29%7D%5D%20-%20%5B2%5E%7B%5Cfrac%7B1%7D%7B3%7D%7D%5Ccdot%203%5E%7B%281%2B%5Cfrac%7B1%7D%7B3%7D%20-%20%5Cfrac%7B2%7D%7B3%7D%29%7D%5D%5C%5C%5C%5C%3D%20%20%5B2%20%5Ccdot%203%5E%7B%28%5Cfrac%7B1%7D%7B3%7D%29%7D%5D%20-%20%5B2%5E%7B%5Cfrac%7B1%7D%7B3%7D%7D%5Ccdot%203%5E%7B%28%5Cfrac%7B2%7D%7B3%7D%29%7D%5D%5C%5C%5C%5C%3D%202%5Csqrt%5B3%5D%7B3%7D%20-%20%5Csqrt%5B3%5D%7B2%7D%5Csqrt%5B3%5D%7B9%7D%5C%5C%5C%5C%3D2%5Csqrt%5B3%5D%7B3%7D%20-%20%5Csqrt%5B3%5D%7B18%7D)
Hence, the quotient of the given expression
is (2∛3 - ∛18).
Learn more about Exponents:
brainly.com/question/5497425