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poizon [28]
4 years ago
8

Numerical Expressions -I need help to understand how to complete this example . Any help would be appreciated.

Mathematics
1 answer:
Natasha2012 [34]4 years ago
8 0

Basketball   16+2=18    (2*8)+2

Baseball    40-5=36    (5*8)-4

Softball 18+6=24 ( (5*8)-4)/2  +6

8+18+36+24=86

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Given A-<br> 2 2<br> 1 3<br> what is A-¹?
devlian [24]

The inverse of matrix A = \left[\begin{array}{cc}2&2&1&3\\\end{array}\right] is A^{-1} = \frac{1}{4} \left|\begin{array}{cc}3&-2&-1&2\\\end{array}\right|      

The given matrix is A = \left[\begin{array}{cc}2&2&1&3\\\end{array}\right]

The inverse of a matrix is given by

A^{-1} = \frac{1}{|A|} adjA                   ...(1)

Now, determinant of matrix A is

|A| = \left|\begin{array}{cc}2&2&1&3\\\end{array}\right|

= (3)(2) - (2)(1)

= 6 - 2

= 4

Now, adjoint A will be

A_{11} = 3

A_{12} = -1

A_{21} = -2

A_{22} = 2

AdjA = \left|\begin{array}{cc}3&-2&-1&2\\\end{array}\right|

Now, substituting the values of |A| and AdjA in equation (1), we get

A^{-1} = \frac{1}{4} \left|\begin{array}{cc}3&-2&-1&2\\\end{array}\right|        

Therefore, A^{-1} = \frac{1}{4} \left|\begin{array}{cc}3&-2&-1&2\\\end{array}\right|      

Know more about Inverse of Matrix: -brainly.com/question/12442362

#SPJ9

     

7 0
2 years ago
You can buy DVDs at a local store fro $15.49 each. You can buy them at an online store for $13.99 each plus $6 for shipping. How
bonufazy [111]
The amount to pay for 6 CDS from Best Buys is... 
<span>C = 15.49N </span>
<span>= 15.49 X 6 </span>
<span>= $92.94 </span>
<span>The amount to pay for 6 CDS from Online Store is... </span>
<span>C = 13.99N + 6 </span>
<span>= 13.99 X 6 + 6 </span>
<span>= $89.94 
so ity shows that online you have benifit to purchase </span>
6 0
3 years ago
Help me please with an explanation<br><br> to please
tekilochka [14]
The answer is 8
Explanation- 9x4= 36 and 288 divided by 36 equal 8
8 0
3 years ago
Read 2 more answers
Can somebody help me with this please??
MAVERICK [17]

Answer:

4

1

5

Step-by-step explanation:

make me brainless ty

3 0
3 years ago
Read 2 more answers
Please solve for x. x/16 = 9/2
VladimirAG [237]

Answer:

x = 72

Step-by-step explanation:

\frac{x}{16}=\frac{9}{2}  \\\\

Start by multiplying 16 to both sides

(\frac{16}{1}) * \frac{x}{16}  = (\frac{16}{1}) * \frac{9}{2}

16s on the left-hand cancel

x =(\frac{16}{1}) * (\frac{9}{2})

x =( \frac{144}{2} )

we can simplify that expression

x = 72

7 0
3 years ago
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