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Sav [38]
3 years ago
7

A balloon has a circumference of 11 cm. Use the circumference to approximate the surface area of the balloon to the nearest squa

re centimeter.
Mathematics
2 answers:
elixir [45]3 years ago
8 0
Try <span>38.465cm I'm not good at math but its the best I could do

</span>
Nezavi [6.7K]3 years ago
5 0
C = 2(pi)(r) so 11= 2(pi)(r) if you divide 11 by 2(pi) using pi as 3.14 you get r = 1.752 then plug in the number to S.A. = 4(pi)r^2 you will get approximately 38.55 sq. Cm of surface area.
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Thank you to whoever helps!
shepuryov [24]

Answer:

  • M
  • 90°

Step-by-step explanation:

The segment joining an original point with its rotated image forms a chord of the circle of rotation containing those two points. The center of the circle is the center of rotation.

This means you can find the center of rotation by considering the perpendicular bisectors of the segments joining points with their images. Here, the only proposed center that is anywhere near the perpendicular bisector of DE is point M.

__

Segment AD is perpendicular to corresponding segment FE, so the angle of rotation is 90°. (We don't know which way (CW or CCW) unless we make an assumption about which is the original figure.)

4 0
3 years ago
The graph of f(x) and g(x)=f(x) + k is shown on the coordinate plane.<br> k = _ ?
Alenkasestr [34]

Answer:

k = 10

Step-by-step explanation:

f(x) has been moved up 10 units to get g(x).  So, k = 10

6 0
3 years ago
Find the value of c so that the polynomial p is divisible by (x+2)
alexandr1967 [171]

Answer:

The value of c is 8.

Step-by-step explanation:

When a function is divisible by a factor, it will get 0 value. So, you have to substitute x = -2 into p(x) and equals to 0 :

p(x) = 4 {x}^{3}  + c {x}^{2}  + x + 2

p( - 2) = 4 {( - 2)}^{3}  + c {( - 2)}^{2}  + ( - 2) + 2

4( - 8) + 4c - 2 + 2 = 0

- 32 + 4c = 0

4c = 32

c = 32 \div 4

c = 8

3 0
3 years ago
What does "e" stand for in y=e^x
lukranit [14]
The "e" is one of mathematical constants. It's equal to approximately 2.7. It's sometimes called Euler's number.<span />
7 0
4 years ago
Consider the following system of equations.
Sidana [21]
Y = 6x - 6  therefore   y - 6x = -6
y - 6x = 5 
so:
-6 ≠ 5
There is no solution to this system.
==========================
\left \{ {{y=6x-6} \atop {y-6x=5}} \right.  \\  \left \{ {{6x-y=6} \atop {-6x+y=5 }} \right.  \\ 0 \neq 11
6 0
3 years ago
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