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earnstyle [38]
3 years ago
15

What is the surface area of a sphere with a radius of 11cm? Use 3.14 for pi

Mathematics
1 answer:
vagabundo [1.1K]3 years ago
6 0
I hope this helps you



Area=4.pi.r^2


Area =4.3,14.11^2


Area =1519
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-4x+ 8x2 – 2x3 + 5<br> this is algebra
Serggg [28]

Answer:

-65

Step-by-step explanation:

use Khan academy it's very helpful

7 0
2 years ago
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Given f(x) = 4x^4 find f^-1(x) Then state whether f^-1(x) is a function.
sdas [7]

Answer:

  • f^{-1}(x)=\pm\sqrt[4]{\dfrac{x}{4}}
  • f^{-1}(x) \quad\text{is not a function}

Step-by-step explanation:

To find the inverse function, solve for y:

x=f(y)\\\\x=4y^4\\\\\dfrac{x}{4}=y^4\\\\\pm\sqrt[4]{\dfrac{x}{4}}=y\\\\f^{-1}(x)=\pm\sqrt[4]{\dfrac{x}{4}}

f(x) is an even function, so f(-x) = f(x). Then the inverse relation is double-valued: for any given y, there can be either of two x-values that will give that result.

___

A function is single-valued. That means any given domain value maps to exactly one range value. The test of this is the "vertical line test." If a vertical line intersects the graph in more than one point, then that x-value maps to more than one y-value.

The horizontal line test is similar. It is used to determine whether a function has an inverse function. If a horizontal line intersects the graph in more than one place, the inverse relation is not a function.

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Since the inverse relation for the given f(x) maps every x to two y-values, it is not a function. You can also tell this by the fact that f(x) is an even function, so does not pass the horizontal line test. When f(x) doesn't pass the horizontal line test, f^-1(x) cannot pass the vertical line test.

_____

The attached graph shows the inverse relation (called f₁(x)). It also shows a vertical line intersecting that graph in more than one place.

5 0
2 years ago
What is the lateral Surface Area rounded to the nearest hundredth?
DochEvi [55]
Pretty sure it’s 109.96
4 0
3 years ago
Read 2 more answers
Does anyone know???!
jok3333 [9.3K]

Answer:

#8 might be y= -3x + 5

Step-by-step explanation:

This may help

5 0
2 years ago
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jose is taking care of a neighbor’s cat. The neighbor will be gone for 5 days and left 3 cans of cat food. The cat is supposed t
Nitella [24]
Hey there, Elizabeth76265!

If the owner left only 3 cans of food for 5 days, that means that we have to divide those cans of food so we can just do simple math and divide 3 by 5
\frac{3}{5} and you get 0.6

So the cat must eat 0.6 of each can everyday.

Thank you for using Brainly.
See you soon!
3 0
3 years ago
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