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2 years ago

9.

Mathematics

2 answers:

Mars2501 [29]2 years ago

7 0

Wow so emotional making me cry

Allushta [10]2 years ago

5 0

Thanks for the helpful answers

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Please help me to solve it

Phantasy [73]

What are you trying to solve for?

4 0

2 years ago

Read 2 more answers

Cassie is thinking of two numbers. Adding 4 times the first number and 6 times the second number gives a total of 28. Also, addi

aleksandrvk [35]

If you try 6x4, you get 24. When you add 4, it = 28. The same thing with 6x4=24+5=29

3 0

3 years ago

See question in attached photo.

statuscvo [17]

9514 1404 393

Answer:

(a, b) = (-2, -1)

Step-by-step explanation:

The transpose of the given matrix is ...

$A^T=\left[\begin{array}{ccc}1&2&a\\2&1&2\\2&-2&b\end{array}\right]$

Then the [3,1] term of the product is ...

$(A\cdot A^T)_{31}=\left[\begin{array}{ccc}a&2&b\end{array}\right]\cdot\left[\begin{array}{ccc}1&2&2\end{array}\right]=a+2b+4$

and the [3,2] term is ...

$(A\cdot A^T)_{32}=\left[\begin{array}{ccc}a&2&b\end{array}\right]\cdot\left[\begin{array}{ccc}2&1&-2\end{array}\right]=2a-2b+2$

Both of these terms in the product matrix are 0. We can solve the system of equations by adding these two terms:

(a +2b +4) +(2a -2b +2) = (0) +(0)

3a +6 = 0

a = -2

Substituting for 'a' in term [3,1] gives ...

-2 +2b +4 = 0

b = -1

The ordered pair (a, b) is (-2, -1).

8 0

2 years ago

I need help please, Its for today

Orlov [11]

Answer:

a) 1,2; 3.4

b) <1=<6, <6+<6+72=180, 2<6=108, <6=54.

<1=54

You can tell this by "these are parallel lines"

7 0

2 years ago

A basketball player signs a contract that pays him $16 million over 4 years what is his average pay per year

Sliva [168]

16 million divided by four years is $4 million per year

5 0

3 years ago