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adell [148]
3 years ago
5

What is the surface area of the sphere below?

Mathematics
1 answer:
dedylja [7]3 years ago
7 0

Answer:

C. 36π units²

Step-by-step explanation:

Surface area of a sphere: 4πr²

4\pi r^2\\4\pi (3)^2\\4\pi (9)\\36\pi

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7. Are the two triangles similar? How do you know? I need this answered quick plz
Contact [7]

Answer:

Yes, by the angle angle rule.

Step-by-step explanation:

In the first triangle,

m<C=60 degrees, and m< D=53 degrees. You know that the sum of angles in a triangle add up to 180 degrees, so solve for E. m<E= 67 degrees.

In the second triangle,

m<F=60 degrees and m<H=67 degrees.

Since both triangle have two congruent angles, you can say that the two triangles are similiar by the AA rule.

5 0
3 years ago
A bouncy ball is dropped. The function h(n)=300(3/4)^n−1 models the maximum height of the ball, in centimeters, after its nth bo
lara [203]

The true statements about the scenario are;

  • The function represents a geometric sequence.
  • The first term in the sequence is 300.

The standard form of a geometric sequence is expressed as:

Tn = ar^{n-1}

a is the first term

r is the common ratio

n is the number of terms

Given the expression h(n)=300(\frac{3}{4} )^{n-1}

Compare and contrast

a = 300

This shows that the first term of the sequence is 300.

Also, a function represents a geometric sequence

Hence the true statements about the scenario are;

  • The function represents a geometric sequence.
  • The first term in the sequence is 300.

Learn more here: brainly.com/question/9300199

7 0
3 years ago
Can anyone help me with these
ladessa [460]
9. n=40\4=10
10.-6\3=x=-2
11.n=-3\-3=1
12.x=60\6=10
13.p=-4 x 3=-12
14.r=-5\7 x 7=-5
15.y=18\3=6
16.k=-1\2 x 4=-2
4 0
4 years ago
What type of property is 7+b=b+7
PIT_PIT [208]
7 +b = b +7  is <span>Commutative Property</span>
5 0
4 years ago
Please Help
Klio2033 [76]

Answer:

(x - 1)^2 + (y - 0.5)^2 = 25.

Step-by-step explanation:

We need to calculate the radius and the coordinates of the center of the circle.

The center is at the midpoint of the diameter =  (-1 + 3)/2 ,  (2+-1)/2

= (1, 0.5).

The radius = 1/2 * diameter = 1/2 * √[ (-1-3)^2 + (2 - -1)^2 ]

r = √25/2 = 2.5

r^2 =  2.5^2 = 6.25.

The general form of the equation is

(x - a)^2 + (y -b)^2 = r^2   where (a,b) is the center and r = the radius.

So the required equation is:

(x - 1)^2 + (y - 0.5)^2 = 6.25.

5 0
3 years ago
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