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yawa3891 [41]
2 years ago
5

6 to the second power ÷ [(4.3×3)+5.1]

Mathematics
1 answer:
Black_prince [1.1K]2 years ago
8 0
2 is the answer
That’s the answer.
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Apply Crammer's Rule to find the solution to the following quations .2x + 3y = 1, 3x + y = 5​
Bond [772]

Answer:

The solution to the equation system given is:

  • <u>x = 2</u>
  • <u>y = -1</u>

Step-by-step explanation:

First, we must know the equations given:

  1. 2x + 3y = 1
  2. 3x + y = 5​

Following Crammer's Rule, we have the matrix form:

\left[\begin{array}{ccc}2&3\\3&1\end{array}\right] =\left[\begin{array}{ccc}x\\y\end{array}\right] = \left[\begin{array}{ccc}1\\5\end{array}\right]

Now we solve using the determinants:

x=\frac{\left[\begin{array}{ccc}1&3\\5&1\end{array}\right]}{\left[\begin{array}{ccc}2&3\\3&1\end{array}\right] } =\frac{(1*1)-(5*3)}{(2*1)-(3*3)} = \frac{1-15}{2-9} =\frac{-14}{-7} = 2

y=\frac{\left[\begin{array}{ccc}2&1\\3&5\end{array}\right]}{\left[\begin{array}{ccc}2&3\\3&1\end{array}\right] } =\frac{(2*5)-(3*1)}{(2*1)-(3*3)}=\frac{10-3}{2-9} =\frac{7}{-7}=-1

Now, we can find the answer which is x= 2 and y= -1, we can replace these values in the equation to confirm the results are right, with the first equation:

  • 2x + 3y = 1
  • 2(2) + 3(-1)= 1
  • 4 - 3 = 1
  • 1 = 1

And, with the second equation:

  • 3x + y = 5​
  • 3(2) + (-1) = 5
  • 6 - 1 = 5
  • 5 = 5

 

4 0
2 years ago
What does this equal to<br> (b^3)2
soldi70 [24.7K]

Answer:

2b^3

Step-by-step explanation:

7 0
2 years ago
Read 2 more answers
Six more than the product of 10 and craig’s score
maw [93]

Answer:

6+10x

Step-by-step explanation:

if x=craigs score that becomes 6+10 times x or 6+10x

4 0
2 years ago
What natural disaster would pose the most serious threat to buildings were
ryzh [129]

Answer:

The answer is "floods"

Step-by-step explanation:

  • It is a natural phenomenon or occurrence if an area of land, which is typically desert country immediately gets dissolved covered in water.  
  • There are several other floods, that suddenly and a wide gap, the other will take weeks or even months to construct and release.
  • This cause is the most major threat to building structures, in which New York City to first be destroyed.
5 0
3 years ago
What is 5√28 + √63 in simplest radical form? <br> PLEASE HELP ME!
Harrizon [31]

\bf 5\sqrt{28}+\sqrt{63}~~ \begin{cases} 28=2\cdot 2\cdot 7\\ \qquad 2^2\cdot 7\\ 63=3\cdot 3\cdot 7\\ \qquad 3^2\cdot 7 \end{cases}\implies 5\sqrt{2^2\cdot 7}+\sqrt{3^2\cdot 7} \\\\\\ 10\sqrt{7}+3\sqrt{7}\implies \stackrel{\textit{adding like-terms}}{13\sqrt{7}}

8 0
3 years ago
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