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oee [108]
3 years ago
13

X square - 3 x - 4 equals 0​

Mathematics
1 answer:
kozerog [31]3 years ago
4 0

Answer:

x=4 x=-1

Step-by-step explanation:

x^2-3x-4=0

x^2-4x+x-4=0

x(x-4) + 1(x-4)=0

x+1=0

x=-1

x-4=0

x=4

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Answer:

neither

Step-by-step explanation:

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Now you can put the 5 inside.

(25c + 30)(c + 1) is one answer.

(5c + 6)(5c + 5) is another.

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8 0
3 years ago
Complete the coordinate proof of the theorem.
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C(a,b), because the x-coordinate( first coordinate) is a (seeing as it is situated directly above point B, which also has an x-coordinate of a) and the y-coordinate ( second coordinate) is b (seeing as it is situated on the same horizontal level as point D, which also has a y-coordinate of b)

the length of AC can be calculated with the theorem of Pythagoras:

length AB = a - 0 = a
length BC = b - 0 = b

seeing as the length of AC is the longest, it can be calculated by the following formula:

It is called "Pythagoras' Theorem" and can be written in one short equation:

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in this case, A and B are lengths AB and BC, so lenght AC can be calculated as the following:

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Extra information: Seeing as the shape of the drawn lines is a rectangle, lines AC and BD have to be the same length, so BD is also √(a^2 + b^2). But that is also stated in the assignment!


3 0
3 years ago
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Answer:

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Step-by-step explanation:

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The total R value is computed from the R-values of the components in the stack as ...
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