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Gala2k [10]
2 years ago
9

30 POINTS ! TRUE OR FALSE?

Mathematics
2 answers:
8_murik_8 [283]2 years ago
5 0

False, they're perpendicular

vovikov84 [41]2 years ago
5 0

Answer:

False

Step-by-step explanation:

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SOME PLEASE HELP OMG
Ilia_Sergeevich [38]

Answer: 3x plus 36

Step-by-step explanation:

You multiply inside the brackets by 3 and you get 3x+36

7 0
3 years ago
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Jeff spent $7.50 at the store. He bought a notebook for $4.00. He also bought 10 pencils. How much did each cost?
DedPeter [7]
Subtract 7.50 - 4.00 and dived that answer by 10
7 0
3 years ago
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Evaluate x - 20 when x=3
ryzh [129]

Answer:

-17

Step-by-step explanation:

Plug in 3:

3 - 20 =

Solve:

3-20 = -17

5 0
2 years ago
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(12x + y + z = 26
mel-nik [20]

Option D. D has the matrix of constants [[12], [11], [4]].

Step-by-step explanation:

Step 1:

With the given equations, we can form matrices to represent them.

The coefficients of x, y, and z form a matrix of order 3 ×3, the variables x, y, and z form a matrix of order 1 ×3 and the constants form a matrix of order 1 ×3.

Step 2:

The linear system A is represented as

\left[\begin{array}{ccc}12&1&1\\1&-11&0\\1&-1&4\end{array}\right] \left[\begin{array}{ccc}x\\y\\z\end{array}\right] = \left[\begin{array}{ccc}26\\17\\23\end{array}\right].

Step 3:

The linear system B is represented as

\left[\begin{array}{ccc}4&1&1\\1&-11&0\\1&-1&12\end{array}\right] \left[\begin{array}{ccc}x\\y\\z\end{array}\right] = \left[\begin{array}{ccc}23\\17\\26\end{array}\right].

Step 4:

The linear system C is represented as

\left[\begin{array}{ccc}1&1&1\\1&-1&0\\1&-1&1\end{array}\right] \left[\begin{array}{ccc}x\\y\\z\end{array}\right] = \left[\begin{array}{ccc}4\\11\\12\end{array}\right].

Step 5:

The linear system D is represented as

\left[\begin{array}{ccc}1&1&1\\1&-1&0\\1&-1&1\end{array}\right] \left[\begin{array}{ccc}x\\y\\z\end{array}\right] = \left[\begin{array}{ccc}12\\11\\4\end{array}\right].

Step 6:

Of the four options, the linear system D has the matrix of constants [[12], [11], [4]]. So the answer is option D. D.

4 0
3 years ago
Which equation could have been used to create this function table?
Ierofanga [76]
It would be c. y = x because if you plug in the numbers, it would be true
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