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3 years ago

Algebra 1 ty! Brainilest if correct

Mathematics

2 answers:

klasskru [66]3 years ago

7 0

Answer:

23520

Step-by-step explanation:

just olya [345]3 years ago

5 0

It’s answer four bc with 3% interest it would be an additional $630 each year.

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Find the LCM<br> of 9 and 27.

Mnenie [13.5K]

Answer:

Step-by-step explanation:

The answer is 27, because 9 x 3 = 27 and the smallest number that is the same is 27.

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3 years ago

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Work out the length x. 14 cm 7 cm

qwelly [4]

Answer:

14 x 7 = 98 divided by 3= 32.6

Step-by-step explanation:

Are you trying to find the length of x?

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2 years ago

2+34-8+23-22hhhuh<br> yanelzi

guapka [62]

Answer:

Step-by-step explanation:

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4 years ago

Someone plz help me

GenaCL600 [577]

Answer:

jayden is 11.

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3 years ago

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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).

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3 years ago