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2 years ago

Given x || y.

Mathematics

1 answer:

ivanzaharov [21]2 years ago

6 0

Angles 1 and 2 are supplementary because they add up to 180°

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Determine between which consecutive integers the real zeros of y(x) = x2 - 4x – 2 are located.

Sholpan [36]

Answer:

The zeros are x1=4.45 and x2=-0.45.

x1 is between 4 and 5.

x2 is between -1 and 0.

Step-by-step explanation:

We have the function:

$y(x) = x2 - 4x-2$

As this is a quadratic function, we can calculate the zeros of the function with the quadratic equation:

$x_{1,2}=\dfrac{-b\pm\sqrt{b^2-4ac}}{2a}\\\\\\x=\dfrac{-(-4)\pm\sqrt{(-4)^2-4\cdot 1\cdot(-2)}}{2\cdot 1}\\\\\\x=\dfrac{4\pm\sqrt{16+8}}{2}\\\\\\x=\dfrac{4\pm\sqrt{24}}{2}\\\\\\x=\dfrac{4\pm4.9}{2}=2\pm2.45\\\\\\x_1=2+2.45=4.45\\\\x_2=2-2.45=-0.45$

The zeros are x1=4.45 and x2=-0.45.

x1 is between 4 and 5.

x2 is between -1 and 0.

7 0

2 years ago

Read 2 more answers

20 POINTS!!! belongs to a: pyramid cube rectangular prism triangular prism

Klio2033 [76]

The middle row is long on one side and short in the other side which is the shape of a rectangle.

The net is a rectangular prism

8 0

3 years ago

Evaluate b²c¹ for b=8 c=-4

AVprozaik [17]

Answer:

The answer is -256.

Step-by-step explanation:

You have to substitute the value of b and c into the expression :

${b}^{2} {c}^{1}$

Let b = 8,

Let c = -4,

${8}^{2} \times { - 4}^{1}$

$= 64 \times - 4$

$= - 256$

8 0

2 years ago

Plz, help ASAP !!!!!!!!

mr_godi [17]

Answer:

145 degrees.

Step-by-step explanation:

This line is 180 degrees. So if you take 180 and subtract 35, you should get 145. Hope this helped!

-Kirito

6 0

2 years ago

How can you use the properties of operations to evaluate this expression? 18 + 4(28). Explain.

maxonik [38]

Answer:

130.

Step-by-step explanation:

18 + 4(28(

= 18 + 4 * 28 Multiplication is done before addition so we have:

18 + 112

= 130.

4 0

3 years ago

Read 2 more answers