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2 years ago

-[tex]-8\9 + 1/5+ -8/15

Mathematics

1 answer:

TiliK225 [7]2 years ago

4 0

Answer:

$-\frac{11}{9}$ , OR $-1\frac{2}{9}$ , OR -1.2

Step-by-step explanation:

$-\frac{8}{9}+\frac{1}{5}+(-\frac{8}{15})$ When there is a (+) in front of an expression in parentheses, the expression remains the same

$-\frac{8}{9}+\frac{1}{5}-\frac{8}{15}$ Calculate the sum or difference

$-\frac{11}{9}$

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Answer:

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Step-by-step explanation:

First, distribute 6 to all terms within the parenthesis.

6(2x + 3) = 12x + 18

Isolate the variable x. Note the equal sign, what you do to one side, you do to the other. Do the opposite of PEMDAS.

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First, subtract 18 from both sides.

12x + 18 (-18) = 42 (-18)

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Step-by-step explanation:

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Answer:

(a) Order of matrix B is 7 × 1 and order of matrix AB is 4 × 1.

(b) Order of matrix A is 5 × 5.

Step-by-step explanation:

The product of two matrices is possible if and only if column of first matrix is equal to row of second matrix.

If A is an n × m matrix and B is an m × o matrix, their matrix product AB is an n × p matrix,

(a)

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B is a column matrix. It means the number of column in matrix B is 1.

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Identity matrix is a square matrix having 1s on the main diagonal, and 0s everywhere else.

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