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zaharov [31]
3 years ago
12

Find the discriminant 9x^2+14x+13=8x^2

Mathematics
1 answer:
tiny-mole [99]3 years ago
8 0

Answer:

The discrimant of this equation is 144.

Step-by-step explanation:

First you have to move all the variables to one side to make the equation/expression into 0 by substracting 8x² to both sides :

9x² + 14x + 13 = 8x²

9x² + 14x + 13 - 8x² = 8x² - 8x²

x² + 14x + 13 = 0

It is given that the formula of discriminant is, D = b² - 4ac where a&b&c represent the number of the equation, ax²+bx+c = 0 :

x² + 14x + 13 = 0

D = b² - 4ac

= 14² - 4(1)(13)

= 196 - 52

= 144

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Answer:

56 cm^2

Step-by-step explanation:

Surface area is just finding the areas of each face in a figure. As we are given a net of a figure, it is much easier for us to calculate it.

Area of square base (side^2)

4^2 = 16 cm^2

Area of ONE triangular face (1/2 x b x h):

1/2 x 4 x 5 = 10 cm^2

Multiply that by 4 because we have 4 triangular faces: 10 cm^2 x 4 = 40 cm^2

ADD all the areas of triangles and square:

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HOPE THIS HELPS

Have a nice day!

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Answer:

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Step-by-step explanation:

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4 0
3 years ago
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Please put more details in the question 
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Please solve and i’ll give u brainliest
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Solution:

<u>Note that:</u>

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<u>Solve for w in the equation "w + 8 + 48 = 180".</u>

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The value of w is 124.

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