How many x-intercepts does the graph of each quadratic equation have? Show your work.

Mathematics

1 answer:

Alex73 [517]3 years ago

4 0

Answer:

Step-by-step explanation:

In each case we find the discriminant b^2 - 4ac.

If the discriminant is negative, we have two unequal, complex roots.

If the discriminant is zero. we have two equal, real roots.

If the discriminant is positive, we have two unequal real roots.

#51: 8v^2 - 12v + 9: the discriminant is (-12)^2 - 4(8)(9) = -144. we have two unequal, complex roots

#52: (-11)^2 - 4(4)(-14) = 121 + 224 = 345. we have two unequal real roots.

#53: (-5)^2 - 4(7)(6) = 25 - 168 (negative). we have two unequal, complex roots.

#54: (4)^2 - 16 = 0. We have two equal, real roots.

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3 years ago

Find the value of X! Please help!

nydimaria [60]

ANSWER

$x = 8 \sqrt{3}$

EXPLANATION

${h}^{2} = {y}^{2} + {4}^{2}$
This implies that,

${h}^{2} = {y}^{2} + 16...eqn1$

Also,

${h}^{2} + {x}^{2} = {16}^{2} ...eqn2$

And

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Put equation 1 into equation 2.

This will give us,

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${y}^{2} +{x}^{2} =16 ( 16 - 1)$

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3 years ago

g Suppose that you randomly selected 20 adults. If 18% of the population smoke, a) Using the Range Rule of Thumb, what is the mi

Gala2k [10]

Answer:

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Here the standard deviation is

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