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Rina8888 [55]
2 years ago
13

Join for a maths intervention-foundation

Mathematics
1 answer:
In-s [12.5K]2 years ago
5 0

Answer:

i \: wil \: join \: u \: for \\ maths \: intervention - fondation

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There were 10 games work out the mean number of goals per game
sp2606 [1]

Answer: 1x 10

5 + 5

Step-by-step explanation:

7 0
3 years ago
Is the inverse of a symmetric matrix also symmetric?
Ahat [919]
Yes, the inverse of a symmetric matrix is also symmetric.

Take the symmetric matrix A, we have:

AA^{-1} = I

and

I^{T} = I

This gives:

(AA^{-1})^{T} = AA^{-1}

Using the properties:

AA^{-1} = A^{-1}A and (AA^{-1})^{T} = (A^{-1})^{T}A^{T}

We get:

(A^{-1})^{T}A^{T} = A^{-1}A

Since A^{T} = A, we can perform the substitution to get:

(A^{-1})^{T}A = A^{-1}A

Multiplying by A^{-1} on both sides:

(A^{-1})^{T}AA^{-1} = A^{-1}AA^{-1}

(A^{-1})^{T}I = A^{-1}I

(A^{-1})^{T} = A^{-1}

Proving that the inverse of a symmetric matrix is also symmetric.
7 0
3 years ago
Enrollment in the pta increased by 35% this year. last year there were 160 members in the pta .how many pta members are involved
Vesna [10]

Answer:

35% of 160 = 56

160 + 56 = 216

There are 216 PTA members this year

3 0
3 years ago
Follow the process of completing the square to solve x2 - 10x + 8 = 0.
11111nata11111 [884]
Don’t listen to any link scams
4 0
3 years ago
Josie simplified an expression as shown below. In which step did Josie make mistake(s)?
Andreas93 [3]

Answer:

D. Step 1 only.

Step-by-step explanation:

Here, Josie didn't use the distributive property correctly. The other two steps are still right, so D is correct.

How it should have been done:

x + 3 + 7x(x - 5)

<em>Use the distributive property to multiply 7x by x - 5.</em>

x + 3 + 7x² - 35x (The boldened part is what should have happened for Step 1)

<em>Combine x and -35x to get -34x.</em>

7x² - 34x - 3 is what the earlier equation should be simplified to.

6 0
3 years ago
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