3 years ago

If x = -3 is the only x-intercept of the graph of a quadratic equation, which statement best describes the discriminant of the

Mathematics

1 answer:

klasskru [66]3 years ago

5 0

Answer:

The discriminant is 0

Step-by-step explanation:

If b² - 4ac = 0 then the roots are real and equal

Since there is only one x- intercept then this condition applies

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Solve the following equations x1/3=2 <br> Y-2=9<br> (2s)1/2=9<br> 2n-1=16

Nookie1986 [14]

$x \times \frac{1}{3} = 2 \\ = > x = 2 \times 3 \\ = > x = 6$

$y - 2 = 9 \\ = > y = 9 + 2 = 11$

$(2s) \frac{1}{2} = 9 \\ = > s = 9$

$2n - 1 = 16 \\ = > 2n = 16 + 1 \\ = > 2n = 17 \\ = > n = \frac{17}{2} = 8.5$

<h3>The answers are :</h3><h3>x = 6</h3><h3>y = 11</h3><h3>s = 9</h3><h3>n = 8.5</h3><h3>Hope it helps!</h3><h3 />

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2 years ago

Sebastian programs his calculator to cvaluate a linear

jonny [76]

Answer: y = 3/4x

Step-by-step explanation:

Each y-value output is 3/4 of the x-value inputted.

8 x 0.75 = 6

12 x 0.75 = 9

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3 years ago

jobs gross pay is $400, from which $24.80 deducted for OASDI, $5.20 for Medicare, and $45 for income tax. what is her net pay? A

katrin2010 [14]

$24.80 + $5.20 + $45.00 = $75.00 the answer is B

7 0

3 years ago

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7. If a set of data points has a trend line of y = 4.2x - 3, what is the predicted value of x when

elixir [45]

Answer:

The predicted value of x = 2

Step-by-step explanation:

y = 4.2x - 3 is the given equation.

Now, y = 5.4

Putting in the above equation, we get

5.4 = 4.2x - 3

or, 5.4 + 3 = 4.2x

or, 8.4 = 4.2 x

⇒ x = 8.4/4.2

⇒ x = 2

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3 years ago

C+2c+12=75<br> what is the value of c?

il63 [147K]

C + 2c + 12 = 75

Combine like terms:

3c + 12 = 75

Subtract 12 to both sides:

3c = 63

Divide 3 to both sides:

c = 21

6 0

3 years ago

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