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iVinArrow [24]
3 years ago
8

Can someone help me with this problem?

Mathematics
2 answers:
Firlakuza [10]3 years ago
5 0
I’ve attached 2 different methods,
What every is easier for you to follow
Hope this helps!!

Diano4ka-milaya [45]3 years ago
3 0
Can you show the answer choices but I believe is 18
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What is a11. A12. A21. A22
Ierofanga [76]

Answer:

a_{11} =-1\\a_{12} =3\\a_{21} =5\\a_{22} =3/2\\

Step-by-step explanation:

2X-\left[\begin{array}{ccc}-4&8\\2&-2\end{array}\right] =\left[\begin{array}{ccc}2&-2\\8&5\end{array}\right]\\X=\frac{1}{2} (\left[\begin{array}{ccc}-4&8\\2&-2\end{array}\right] +\left[\begin{array}{ccc}2&-2\\8&5\end{array}\right])\\X=\frac{1}{2} (\left[\begin{array}{ccc}-4+2&8-2\\2+8&-2+5\end{array}\right] )\\X=\frac{1}{2} (\left[\begin{array}{ccc}-2&6\\10&3\end{array}\right] )\\X= (\left[\begin{array}{ccc}\frac{1}{2}(-2)&\frac{1}{2}(6)\\\frac{1}{2}(10)&\frac{1}{2}(3)\end{array}\right] )\\

X= (\left[\begin{array}{ccc}-1&3\\5&3/2\end{array}\right] )

a_{11} =-1\\a_{12} =3\\a_{21} =5\\a_{22} =3/2\\

8 0
3 years ago
Six less than twice a number x is 38. what is the value of x​
Margarita [4]
Equation: 2x - 6 = 38
Solve for x
Add 6 to both sides
2x = 44, x = 22
The answer is 22
7 0
3 years ago
325 meters in 28 secs
oksano4ka [1.4K]

Answer:

325 / 28 = ?

Step-by-step explanation:

5 0
3 years ago
Arianna measured a line to be 9.9 inches long. If the actual length of the line is 7.8 inches, then what was the percent error o
Rus_ich [418]

Answer: 26.9%

Step-by-step explanation:

9.9-7.8=2.1

(2.1/ 7.8) •100=26.9

7 0
3 years ago
Read 2 more answers
35) The volume of a cone is 8 cubic
Anuta_ua [19.1K]

Answer:

24 cm³

Step-by-step explanation:

Volume of a cylinder is three times of a cone with same measurements

volume of cone is 8cm³

then,volume of cylinder is 8 × 3 = 24

7 0
2 years ago
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