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Harrizon [31]
3 years ago
9

Suppose the radius of a circle is 4. What is its area?

Mathematics
1 answer:
kati45 [8]3 years ago
5 0
Area= r*r*π (π ≈ 3.14)
⇒ Area= 4*4* π= 50.265

The area of the circle is 50.265~
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What is 5 + 2x + 7 + 4x
Aneli [31]

Answer:

12+8x

Step-by-step explanation:

By adding together alike values, 5 and 7, and 2x and 4x, you get 12+8x.

3 0
2 years ago
Find the y-intercept(s),k if any for the equation y=x^2-16
Lyrx [107]
the\ y-intercept:\\\\y=x^2-16\ \ \ and\ \ \ x=0\ \ \ \Rightarrow\ \ \ y=0^2-16=-16
5 0
3 years ago
Read 2 more answers
Which statements about the graph of the function f(x) = –x2 – 4x + 2 are true? Check all that apply. The domain is {x|x ≤ –2}. T
Leto [7]
The graph of the function f(x) =-x^2-4x + 2 is parabola with branches going down in the negative direction of y-axis. 
The vertex of parabola has coordinates:

x_v=\dfrac{-(-4)}{2\cdot(-1)}=-2, \\ y_v=-(-2)^2-4\cdot (-2)+2=-4+8+2=6

Then you can conclude that all x are possible, that means that the dimain is x\in (-\infty,\infty) and the maximum value of y is at the vertex, then the range is (-\infty,6].The function is increasing for x<-2 and decreasing for x>-2 (since vertex is the maximum point).
When x=0, y=2. 
Hence,
<span>The domain is {x|x ≤ –2} - false.
</span>
<span>The range is {y|y ≤ 6} - true.
</span>
<span>The function is increasing over the interval (–∞ , –2) - true.
</span>
<span>The function is decreasing over the interval (−4, ∞) - false.
</span>
<span>The function has a positive y-intercept - true.</span>









8 0
3 years ago
Read 2 more answers
Given the term 3x², select ALL of the like terms listed below. Question 3 options: A.-2x²
atroni [7]

Answer:

A.-2x^2

D.5x^2

E.x^2

Step-by-step explanation:

Like terms must have the same variable, in this case x, and the same exponent, in this case 2. Since the original term is 3x^2, the like terms will be those that contain x^2, regardless of whether their coefficient or sign is different.

Analyzing the options:

A.-2x^2

We have the same variable and the same exponent x^2, so it is a like term.

B. 3x

You have the same variable x but not the same exponent. So it's not a like term of 3x^2

C.3x^3

Same variable x but as in the previous case, the exponent is different, it is a 3 and it should be a 2, so it is not a similar or like term.

D.5x^2

In this option we do have the x^2, so it is a like term of  3x^2

E.x^2

It is also a like term because it contains the x^2.

In summary the like terms are:

A.-2x^2

D.5x^2

E.x^2

7 0
3 years ago
Find the roots of each of the polynomial equation x^5-6x^4-2x^3+36x^2+x-30=0
ValentinkaMS [17]
I got x= -2, -1,1,3,5
8 0
3 years ago
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