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3 years ago

Which characteristic is correct for the function f(x)=-2x^4+3x^2?

Mathematics

1 answer:

kati45 [8]3 years ago

8 0

Because of the mixture of even and odd powers of x, <span>f(x)=-2x^4+3x^2 is neither even nor odd.

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Find the area of the circle to the nearest whole number, if necessary!

astra-53 [7]

Answer:

The circle has an area of about 1385 square mm.

Step-by-step explanation:

Let's recall that circles have an area that can be found with the following formula:

$A=\pi r^{2}$

where r is the radius of the circle.

Now, focus your eyes on the circle. We are shown that the diameter of this circle is 42 mm, but we only want the radius. Since the radius is half the diameter, the radius is 21 mm. Now, we can solve for the area of the circle.

$A=\pi (21)^2\\A=441\pi \\A=1385.44236...$

So, to the nearest whole number, the area of the circle is 1385 square mm.

5 0

1 year ago

7. y-2 = (x+3)<br> 4<br> 2<br> X<br> - TO<br> 12<br> 4

drek231 [11]

Answer:

y = -24 + -2x + 2x2

Step-by-step explanation:

Simplifying:

y = 2(x + 3)(x + -4)

reorder the terms:

y = 2(3 + x)(x + -4)

multiply (3 + x) * (-4 + x)

y = 2(3(-4 + x) + x(-4 + x))

y = 2((-4 * 3 + x * 3) + x(-4 + x))

y = 2((-12 + 3x) + x(-4 + x))

y = 2(-12 + 3x + (-4 * x + x * x))

y = 2(-12 + 3x + (-4x + x2))

Combine like terms 3x + -4x = -1x

y = 2(-12 + -1x + x2)

y = (-12 * 2 + -1x * 2 + x2 * 2)

y = (-24 + -2x + 2x2)

Solving:

y = -24 + -2x + 2x2

solving for variable 'y'

Move all terms containing y to the left, all other terms to the right.

Simplifying:

y = -24 + -2x + 2x2

8 0

2 years ago

haru rides his bike from his home for 30 minutes at a fast pace. He stops to rest for 20 minutes, and then continues riding in t

Bezzdna [24]

Using the given information and what we know about linear equations, we will find the sketch below.

<h3>How to sketch a graph?</h3>

Here we need to analyze each part separately.

In a coordinate axis where the y-axis represents distance and the x-axis represents time, we will have that:

First, we know that he rides for 30 minutes at a given speed, this will be represented with an increasing linear function.

Then he stops for 20 minutes, this is represented with a horizontal line.

Finally, he returns the motion, but slower than before, so the slope of this line will be smaller than the first one.

So for 0 to 30 we have an increasing linear equation, then for 30 to 50 we have a constant horizontal line, then for 50 to 80 we have another increasing linear equation

The sketch can be seen below.

If you want to learn more about linear equations, you can read:

brainly.com/question/4074386

6 0

2 years ago

What is x equal to if y = x / y.

kupik [55]

Answer: X= y^2

Step-by-step explanation:

7 0

2 years ago

Which of the following is the solution to 6/(x+2) = 5/4x?

Oliga [24]

Answer:

The answer to your question is x = 10/19

Step-by-step explanation:

Equation

6 / (x + 2) = 5 / 4x

To solve this equation use cross multiplication

6(4x) = 5(x + 2)

Simplify

24x = 5x + 10

Subtract 5x in both sides of the equation

24x - 5x = 5x - 5x + 10

Simplify

19x = 10

Divide by 19 both sides

19x/19 = 10/19

Simplify

x = 10/19

6 0

3 years ago