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pishuonlain [190]
3 years ago
13

Solve for X: 1.) 3x-4=6x+5 2.) 3x-4=6x+5 3.) -2(1+7x) = -100 4.) x - 1 + 3= - 2- x

Mathematics
2 answers:
TiliK225 [7]3 years ago
4 0

Answer:

1) -3

2) -3

3) 7

4) -2

Gennadij [26K]3 years ago
3 0

Answer:

Step-by-step explanation:

1) -3

2) -3

3) 7

4) -2

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Step-by-step explanation:

8 0
3 years ago
Use determinants to find out if the matrix is invertible.
wariber [46]

Answer:

The matrix is not invertible.

Step-by-step explanation:

We are given the following matrix in the question:

A =\left[\begin{array}{ccc}-5&0&1\\-1&3&2\\0&10&6\end{array}\right]

Condition for invertible matrix:

A matrix is invertible if and only if the the determinant is non-zero.

We can find the determinant of the matrix as:

|A| = -5[(3)(6)-(2)(10)]-0[(-1)(6)-(2)(0)] + 1[(-1)(10)-(3)(0)]\\|A| = -5(18-20)+(-10)\\|A| = 10-10\\|A| = 0

Since the determinant of the given matrix is zero, the given matrix is not invertible.

5 0
3 years ago
Name:
saveliy_v [14]
Bread A because it was more likely to have it ..
4 0
3 years ago
3. The talent show committee sold a total of 522 tickets. Student tickets cost $3 each and adult tickets
irina1246 [14]

Answer:

Step-by-step explanation:

If student ticket = 215 then 215 x 3 = 645$

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So adult tickets = 307 x 4 = 1228$

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