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3 years ago

True or false a rectangle is never a rhombus

Mathematics

2 answers:

lidiya [134]3 years ago

8 0

Answer:

This is actually false according to most accepted definitions - a rectangle that has equal sides would be a square, and thus also a rhombus.

Step-by-step explanation:

The definition of a rhombus is that it has 4 equal sides.

Also, the definition of a rectangle is that it has two pairs or equal sides, and all angles are 90 degrees.

So a square is a special case of a rectangle. And a square is also a special case of a rhombus.

Meaning that a square is both a rhombus and a rectangle, so any rectangle with equal sides would also be a rhombus.

Aleonysh [2.5K]3 years ago

3 0

Answer:

Its true.A rectangle is never a rhombus.

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marshall27 [118]

Answer:

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Step-by-step explanation:

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3 years ago

Use the discriminant to find the number and type of solution for x^2+6x=-9

likoan [24]

Answer:

D = 0; one real root

Step-by-step explanation:

Discriminant Formula:

$\displaystyle \large{D = {b}^{2} - 4ac}$

First, arrange the expression or equation in ax^2+bx+c = 0.

$\displaystyle \large{ {x}^{2} + 6x = - 9}$

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$\displaystyle \large{ {x}^{2} + 6x + 9 = - 9 + 9} \\ \displaystyle \large{ {x}^{2} + 6x + 9 = 0}$

Compare the coefficients so we can substitute in the formula.

$\displaystyle \large{a {x}^{2} + bx + c = {x}^{2} + 6x + 9 }$

a = 1
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Substitute a = 1, b = 6 and c = 9 in the formula.

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3 years ago

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Alchen [17]

The rate of change of the given equation is: 0.86

Step-by-step explanation:

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Given equation is:

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We can see that the co-efficient of x is 0.86

Hence,

The rate of change of the given equation is: 0.86

Keywords: Slope, rate of change

Learn more about slope at:

#LearnwithBrainly

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Sphinxa [80]

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3 years ago

True or false a rectangle is never a rhombus​

True or false a rectangle is never a rhombus