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Gnesinka [82]
3 years ago
12

If the discriminant of a quadratic equation is positive, which of the following is true of the equation?

Mathematics
2 answers:
gregori [183]3 years ago
6 0

Answer:

it is b. it has two real solutions.

Step-by-step explanation:

Yanka [14]3 years ago
3 0
For this case suppose that we have a quadratic equation of the form:
 ax ^ 2 + bx + c

 The solution to the quadratic recuacion is given by:
 x =  \frac{-b +/-  \sqrt{b^2 - 4ac}}{2a}
 Where,
 The discriminant is:
 b ^ 2 - 4ac

 When the discriminant is greater than zero, then the root is positive, and therefore, we have two positive real solutions.
 Answer:
 
B. it has two real solutions
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Strike441 [17]

Answer:

see explanation

Step-by-step explanation:

Her error is in squaring (2y)²

She has (2y)² = 2y²

when it should be 2y × 2y = 4y²

Then

(2y)² = 6² + 8²

4y² = 36 + 64

4y² = 100 ( divide both sides by 4 )

y² = 25 ( take square root of both sides )

y = \sqrt{25} = 5

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ANOTHER ONE PEOPLE!!! ANOTHER!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
Tasya [4]

Answer:

10.3

10,7

Step-by-step explanation:

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3 years ago
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Find x, y, and z<br><br> x = 39<br> x = 29<br> y = 61<br> y = 29<br> z = 61<br> z = 29
nikdorinn [45]

answer:

x = 29

y = 29

z = 61

step-by-step explanation:

all angles in a triangle must equal 180 degrees.

we were already given the angle degree of 61 degrees so we must include that in our formula to determine the degree of y.

the line in the middle already gives us two more angles because they both are 90 degrees for being a perfect quarter turn.

so to figure out y,

we must add 61+90 and then subtract the sum of that from 180.

so, 61+90 = 150 and 180-151 = 29

therefore,

we can conclude that y = 29

now, to determine the degrees of x and z we do the same thing.

we already know one angle equals 90 degrees.

180-90 = 90

that concludes that x and z must have a sum of 90.

if we use our choices,

39+61 = 100 (no)

39+29 = 68 (no)

29+61 = 90 (CORRECT)

29+29 = 28 (no)

<em>therefore, x = 29 and z = 61</em>

<em></em>

<em>so, in total :</em>

<em>x = 29</em>

<em>y = 29</em>

<em>z = 61</em>

<em></em>

<em>hope this helps :)   </em>

<em>-audrey <3 </em>

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3 years ago
Part A name the asymptote for the graphed function
jasenka [17]

Answer:

The horizontal line  y=2  is the asymptote


Step-by-step explanation:

This is an exponential function.

An asymptote is the line a function approaches but never touches.

Here, y=2 is the horizontal line that is asymptote of the function.


<u>Note:</u> <em>Normally, y=0 is the asymptote of a parent exponential function, since this graph is parent function shifted 2 units up, the asymptote becomes y=2</em>

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