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KIM [24]
3 years ago
14

Does this matrix have an inverse?why or why not ?

Mathematics
1 answer:
Ierofanga [76]3 years ago
8 0

Answer:

C. No, because it's determinant is zero

Step-by-step explanation:

A= \begin{bmatrix} 16 & - 4\\\\ 8 & - 2\end{bmatrix}

det(A) =\begin{vmatrix} 16 & - 4\\\\ 8 & - 2\end{vmatrix}

det(A) = 16\times (-2)-(-4)\times 8

det(A) = -32+32

det(A) = 0

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3 years ago
Find the discriminant of the following equation:
vladimir1956 [14]

Option 1

The discriminant of given equation is 116

<em><u>Solution:</u></em>

We have to find the discriminant of given equation

<em><u>Given equation is:</u></em>

f(x) = 4x^2+6x-5

To find discriminant,

4x^2+6x-5 = 0

\text {For a quadratic equation } a x^{2}+b x+c=0, \text { where } a \neq 0

<em><u>Discriminant is given by:</u></em>

D = b^2-4ac

On comparing the given quadratic equation 4x^2+6x-5 = 0 with general quadratic equation ax^2+bx+c = 0

a = 4

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c = -5

<em><u>Substituting in above formula,</u></em>

D = 6^2-4(4)(-5)\\\\D = 36-16(-5)\\\\D = 36+80\\\\D = 116

Thus discriminant of given equation is 116

8 0
3 years ago
Aiden has $15.00 on his copy card. Each time he uses the card to make a photocopy, $0.06 is deducted from his card. Aiden wants
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15 - 0.06X=5
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4 0
4 years ago
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The measures of two complementary angles are 4x+6 and 5x+3. Find x.
Juliette [100K]

4x + 6 + 5x + 3 = 90

9x +9 = 90

( Subtract 9 from 9 and 90 )

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( Divide 9x and 81 by 9 )

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Hope this helps.

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