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2 years ago

What's The Value Of X If X =3squared ?

Mathematics

1 answer:

neonofarm [45]2 years ago

3 0

Square means multiply by itself so 3^2 is 3 x 3, which is 9.

X is 9.

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Which equation best fits the graphed data?

fenix001 [56]

Answer:

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Step-by-step explanation:

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2 years ago

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scoray [572]

Answer: B

Step-by-step explanation:

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2 years ago

The length of a rectangle is 2 ft longer than its width.

tino4ka555 [31]

Hi! I'm happy to help!

To solve this, we first need to look at the perimeter equation:

P=2L+2W

We don't know our length, so we can represent it with x. Since our width is 2 feet shorter than x, we can represent it with x-2. Now, we plug these values into our equation:

56=2x+(2(x-2))

Let's simplify what the width is by multiplying:

56=2x+2x-4

Now, let's combine our 2xs

56=4x-4

Now, we just need to solve for x in order to find our length and width.

First, we need to isolate x on one side of the equation. We can do this by adding 4 to both sides:

56=4x-4

+4 +4

60=4x

Now, all we have to do is divide both sides by 4 and x will be fully isolated:

60=4x

÷4 ÷4

15=x

Now that we know x, let's plug this into our previous equations:

L=x=15

L=15

W=x-2=15-2=13

W=13

To verify our answers, we can plug this into our perimeter equation:

56=2(15)+2(13)

56=30+36

56=56

After double checking our answers, we know that our length is 15 and our width is 13.

I hope this was helpful, keep learning! :D

5 0

2 years ago

2. The absolute value of -8 is 8.

liraira [26]

2. The absolute value of -8 is 8. True
3. An isosceles triangle has three congruent sides.
Nope. It has two

4. The cosine is the ratio between the length of the opposite leg to the length of the hypotenuse.
I have no idea.

5. The boiling point of water is 212°C.
true

6.
The expression 28xyz has 4 terms.
true

7.
Shapes that have the same size and shape are said to be similar.
false

8.
The points where the sides of a polygon meet are called the vertexes.
true

9. A heptagon is a seven-sided polygon.
true (hexagon)

10.
An acute angle has more than 90° but less than 180°.
true

8 0

2 years ago

Find all zeros of ƒ(x) = 2x^4 – 72x^2. Then determine the multiplicity at each zero. State whether the graph will touch or cross

AleksandrR [38]

Answer: See below

Step-by-step explanation:

To find the factor,

f(x) = 0

$\begin{aligned}&2 x^{4}-72 x^{2}=0 \\&2 x^{2}\left(x^{2}-36\right)=0 \\&x^{2}\left(x^{2}-36\right)=0 \\&x \times x \times(x-6) \times(x+6)=0 \\&\mathrm{x}=0,0,6,-6\end{aligned}$

So,

x = 0 multiplicity 2

x = -6 multiplicity 1

x = 6 multiplicity 1

For an even multiplicty, the graph touches the x-axis, and for an odd multiplicty, the graph crosses the x-axis

Therefore,

x = 0 multiplicty 2, Touch

x = -6 multiplicty 1, Cross

x = 6 multiplicty 1, Cross

7 0

1 year ago