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3 years ago

If a famer plows 2 acres every 3 hours how long will it take to plow 60 acres

Mathematics

1 answer:

Elina [12.6K]3 years ago

4 0

it take him 90 hrs to plow 60 acres

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2 years ago

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Find the total number of diagonals in a regular nonagon.

anastassius [24]

Answer:

Step-by-step explanation:

number of diagonals in a regular polygon = number of sides - 2.

A nonagon is a polygon having 9 sides.

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2 years ago

For which values of k does the system of linear equations have zero, one, or an infinite number of solutions? [Note: not all thr

viktelen [127]

Answer:

The system has an infinite solution at k = 6, otherwise for any value of k, it has zero solution.

Step-by-step explanation:

Consider the system of linear equations:

$3x_{1} -x_{2}=2\;\;\;\;\;\;(1)\\ 9x_{1} -3x_{2}=k\;\;\;\;\;(2)$

The system of linear equations can have zero, one, or an infinite number of solutions:

simplify equation (1):

$x_{2}=3x_{1} -2$

substitute in equation (2), we get

$9x_{1} -3(3x_{1}-2)=k\\9x_{1} -9x_{1}+6=k\\0+6=k$

we cannot find the value of $x_{1}$ and $x_{2}$ .

so, there is no solution.

Multiply the equation (1) with 3 and put k is 6,

$3(3x_{1} -x_{2})=3\times2\\9x_{1} -3x_{2})=6$

it means both equations are overlapped. Then, the solution has infinite solutions.

Hence, the system has an infinite solutions at k is 6 otherwise for any value of k it has no solution.

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2 years ago

if the unit selling price is $2.50 and the unit cost is $1 what is the action needed to maintain the gross margin percentage whe

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3 years ago

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Answer:

A realistic fiction

Step-by-step explanation:

I just love realistic fiction

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3 years ago