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vladimir2022 [97]
3 years ago
7

We’ve shown that matrix multiplication is generally not commutative, meaning that as a general rule for two

Mathematics
1 answer:
ValentinkaMS [17]3 years ago
6 0

Answer:

a) Observe that

G=\left[\begin{array}{ccc}2&6\\4&0\end{array}\right] =2\left[\begin{array}{ccc}1&3\\2&0\end{array}\right] =2F

Then, FG=F(2F)=2FF, \text{ and } GF=(2F)F=2FF

b) The zero matrix satisfies that for every matrix B such that the product is well defined, 0B=0=B0.

Since the matrix G is the zero matrix then FG=F0=0F=GF

c) The identity(Id) matrix satisfies that for  that for every matrix B such that the product is well defined Id*B=B=B*Id. Observe that G is the identity matrix, then FG=F*Id=F=Id*F=GF

d) Observe that

G=\left[\begin{array}{ccc}3&0&0\\0&3&0\\0&0&3\end{array}\right] =3\left[\begin{array}{ccc}1&0&0\\0&1&0\\0&0&1\end{array}\right] =3Id.

Then GF=3Id*F=3F\\FG=F(3Id)=3F*Id=3F

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You are paying off a student loan in monthly installments. After
dem82 [27]

Answer:

The loan will be paid after 39 monthly installments.

Step-by-step explanation:

Since I am paying off a student loan in monthly installments, and after the 4th payment the remaining balance is $ 13,900, while after the 5th payment my remaining balance is $ 13,500, to determine the amount of payments in which the loan was agreed I must perform the following calculation:

13900 - 13500 = 400

400 x 5 = 2000

2000 + 13500 = 15500

15500/400 = 38.75

Thus, the loan will be paid after 39 monthly installments.

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3 years ago
Please look at the image
Alina [70]

Answer:

F=2E

ANGLE F+ANGLE E=120

2E. + E. =120

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2 years ago
What are the solutions of x^2+5x=2? Check all that apply
astraxan [27]
X^2+5x=2
you then solve by completing the square using the formula (b/2)^2 in order to create the new term. Solve for x by using this term to complete the square. 
Your answer is then
x=-5/2+-√33/2
3 0
3 years ago
Read 2 more answers
30 kg of tomatoes cost $93. how much would 14 kg cost
katovenus [111]

Answer:

$43.4

Step-by-step explanation:

Let's say x is the cost per kilgram

30x = 93

x = 3.1

14x = 43.4

8 0
3 years ago
A 44<br> B 5<br> C 10<br> D None of the choices are correct.
Brums [2.3K]

Answer:

D. None of the choices are correct.

Step-by-step explanation:

If <em>B</em> is the midpoint of AC, then that means that AB is congruent to BC. Because this is true, you can set 8x + 4 and 10x - 8 equal.

8x + 4 = 10x - 8

Now just solve for x. Subtract 8x from both sides and add 8 to both sides.

4 = 2x - 8

12 = 2x

Then divide by 2.

6 = x

Another way to do this problem is to set up the same equation, but instead of solving it, plug in answer choices A, B, and C independently of each other. Then simplify to see if those are right. You'll find out that none of them are.

4 0
3 years ago
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