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2 years ago

15

WILL GIVE BRAINLIEST AND 20 POINTS! What is the correct formula for the value of the determinant? A. ab - cd B. ab + cd C. ad -

cb D. ad + cb

1 answer:

sasho [114]2 years ago

3 0

Answer:

Option C

Step-by-step explanation:

In the matrix, the determinant is the difference between the opposite elements multiplied.

So, the opposite elements multiplied will give us:

=> ad,bc

The difference is

=> ad-bc

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sukhopar [10]

Answer:

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Step-by-step explanation:

$Let\ the\ required\ equation\ is\ y=mx+c\\\\where\ m\ is\ the\ slope\ of\ the\ equation\ and\ c\ is\ y-intercept\\\\It\ is\ parallel\ to\ the\ equation\ y=\frac{1}{2}x+3\\\\Hence\ slope\ of\ these\ two\ lines\ will\ be\ same.\\\\Slope\ of\ y=\frac{1}{2}x+3\ is\ \frac{1}{2}\\\\Hence\ slope\ of\ y=mx+c\ is\ \frac{1}{2}\Rightarrow m=\frac{1}{2}\\\\Equation:y=\frac{1}{2}x+c\\\\Line\ passes\ through\ (10,-5).\ Hence\ this\ point\ satisfies\ the\ equation\ of\ line.\\\\-5=\frac{1}{2}\times 10+c$

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$Equation\ of\ line:\ y=\frac{1}{2}x-10$

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Step-by-step explanation:

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Step-by-step explanation:

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