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Gwar [14]
3 years ago
6

A hill on a dirt bike course is 5 feet tall. The valley below the hill is as deep as the hill tall. What integer represents the

location of the bottom of the valley?
6th-grade math
Mathematics
1 answer:
Fantom [35]3 years ago
5 0
The valley would be -5 feet
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Which is the graph of a quadratic equation that has a negative discriminant?
vovikov84 [41]

Answer:

Here's what I get  

Step-by-step explanation:

The formula for a quadratic equation is

ax² + bx + c = 0

The quadratic formula gives the roots:

x = \dfrac{-b\pm\sqrt{b^2-4ac}}{2a} =  \dfrac{-b\pm\sqrt{D}}{2a}

D is the discriminant.

It tells us the number of roots to the equation — the number of times the graph crosses the x-axis.

D = \begin{cases}\text{positive}  & \quad \text{2 real solutions}\\\text{zero} & \quad \text{1 real solution}\\\text{negative} & \quad \text{0 real solutions}\\\end{cases}

It doesn't matter if the graph opens upwards or downwards.

If D > 0, the graph crosses the x-axis at two points.

If D = 0, the graph touches the x-axis at one point.

If D < 0, the graph never reaches the x-axis.

Your graph must look like one of the two graphs on the right in the Figure below.

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3 years ago
How do I find the area of a circle?
pogonyaev
How to find the area of a circle:

The area of a circle can be found by multiplying pi ( π = 3.14) by the square of the radius
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8 0
3 years ago
How many solutions for linear equation 3x + 5y = 25 can be found so that −20 &lt; y &lt; 10, and x is an integer?
ch4aika [34]

Answer:

50

Step-by-step explanation:

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Step-by-step explanation:

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(2x - 5)(3x + 1)

7 0
3 years ago
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