Construct a 2x2 matrix whose element are given by i+j

Mathematics

1 answer:

musickatia [10]2 years ago

5 0

9514 1404 393

Answer:

see below

Step-by-step explanation:

Assuming i and j refer to the row and column of a given element, that matrix would be ...

$\left[\begin{array}{cc}2&3\\3&4\end{array}\right]$

Rows are numbered top down, starting with 1. Columns are numbered left-to-right, starting with 1. The upper left element is in row 1, column 1, so has a value here of 1+1 = 2. Each number is one more than the one to its left. Each number is 1 more than the one above it.

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Step-by-step explanation:

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Does anyone know how to Solve the system of equations. −3x+y=2 7x−8y=1

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2 years ago

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7nadin3 [17]

Answer:

New plan better

Step-by-step explanation:

We need to compare the cost of the first plan, $2170, to the cost of this new plan. Fot this, we need to find the cost of the new plan. We need an equation for this.

For the new plan there is a fixed cost of $70, i.e, no matter how many employees there will be, the firm would have to pay $70. Then, if it has 1 employee, would face a cost of $70 + $59, where this $59 is the cost per employee. If the firm has 2 employees the cost will be $70 + $59 + $59 = $70 + 2*($59). If it hires 3 employees: $70 + $59 +$59 +$59 = $70 + 3*($59). And so forth for 4, 5, 6 employees.

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Read 2 more answers

the height of the triangle is 4cm and the base width is 18 cm and the base length is 18 cm what is the surface area of a square

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Answer:

The surface area is 664 cm²

Step-by-step explanation:

$A=a^{2} +2a\sqrt{\frac{a^{2}}{4} } +h^{2}$ Use this equation to find the surface area