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4 years ago

The product of a number and five is eight

Mathematics

1 answer:

artcher [175]4 years ago

3 0

Answer:

Assuming x is the number, then $x=1.6$

Step-by-step explanation:

If the product of a number and 5 is 8, the equation becomes:

$5x=8$ (assuming x is the unknown number).

We can isolate the variable x by dividing both sides by 5.

$5x\div5 = 8\div5\\x = 1.6$

Hope this helped!

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Step-by-step explanation:

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3 years ago

Solve x divided by four equals eight . (1 point) 4 −4 32 −32

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3 years ago

Read 2 more answers

Help please!!!!!!!!!

In-s [12.5K]

ANSWER

EXPLANATION

For a matrix A of order n×n, the cofactor $C_{ij}$ of element $a_{ij}$ is defined to be

$C_{ij} = (-1)^{i+j} M_{ij}$

$M_{ij}$ is the minor of element $a_{ij}$ equal to the determinant of the matrix we get by taking matrix A and deleting row i and column j.

Here, we have

$C_{11} = (-1)^{1+1} M_{11} = M_{11}$

M₁₁ is the determinant of the matrix that is matrix A with row 1 and column 1 removed. The bold entries are the row and the column we delete.

$\begin{aligned} A=\begin{bmatrix} \bf 1 & \bf -6 & \bf -4\\ \bf 7 & 0 & -3 \\ \bf -9 & 8 & -8 \end{bmatrix} \implies M_{11} &= \text{det}\left(\begin{bmatrix} 0&-3 \\ 8&-8 \end{bmatrix} \right) \end{aligned}$

Since the determinant of a 2×2 matrix is

$\det\left( \begin{bmatrix} a & b \\ c& d \end{bmatrix} \right) = ad-bc$

it follows that

so $C_{11} = M_{11} = 24$

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3 years ago

What is 1.75 kilometres as a fraction of 700 metres? Give your answer in its simplest form

aniked [119]

Answer:

5/2

Step-by-step explanation:

1000m = 1km

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1750 / 700 = 5/2

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3 years ago