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Marrrta [24]
3 years ago
6

Can anyone help me with this ASAP?

Mathematics
2 answers:
Lostsunrise [7]3 years ago
5 0

What's with the gratuitous pi s?

The rule is to preserve inequalities we can only multiply both sides by positive numbers, or non-negative numbers (zero ok) for ≤ and ≥ (but not < and >).

To clear the denominator, first we need all positive factors down there so we multiply by

\dfrac{x-3}{x-3}=1

giving

\dfrac{x(x+2)^2(x-\pi)^3(x-3)}{x^2(x-3)^2(x+\pi)^4} \ge 0

Everything in the denominator is positive now, so we can clear it, multiplying it on both sides.  It vanishes on both sides.

x(x+2)^2(x-\pi)^3(x-3) \ge 0

Again we can divide both sides by the positive factors, which are the squares, including (x-π)².  We'll get zero when those factors are zero (and no zero denominator factor), so we have to remember to include x=0, x=-2, x=3 and x=π in the answer, but we eliminate 0 and 3 from this list because they give zero denominators.

x(x-\pi)(x-3) \ge 0

That's a lot easier to think about.  When x is really negative we're multiplying three negative numbers, so a negative result.

When x is really big we're multiplying three positive numbers, again a positive result.  

Between 0 and pi it's going to alternate.

<0 negative

0-3 positive

3-π negative

>π positive

Since zero is ok we can use ≤ or ≥ as appropriate, but we should also rule out anything that gives a zero denominator, as the truth value of 'undefined ≥ 0' is not really determined.

Answer: 0 < x < 3 or x ≥ π or x=-2

[I missed the x=-2 the first time around; sorry about that.]

Sveta_85 [38]3 years ago
3 0

Answer:

qwertyuiop qwertyuiop

Step-by-step explanation:

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I need help with this problem?
Cerrena [4.2K]

Answer:

Step-by-step explanation:

Volume of cylinder:

\boxed{\text{Volume of cylinder=$\pi r^{2}h$}}

<u>Bottom cylinder:</u>

1 inch = 2.54 cm

 diameter = 14 in

r = 14/2 = 7 in

r = 7 *2.54 = 17.78 cm

h = 4 in = 4*2.54 = 10.16 cm

Volume = 3* 17.78 * 17.78 * 10.16

             = 9635.59 in³

<u>Upper cylinder:</u>

diameter = 12 in

r = 12/2 = 6in

r = 6*2.54 = 15.24 cm

h = 12 in = 12*2.54 = 30.48 cm

Volume = 3 * 15.24 *15.24 * 30.48

             = 21237.63 in³

Volume of the object = 9635.59 + 21237.63                  

                                     = 30873 cm³

3 0
2 years ago
When you are given three side lengths for a triangle, how do you know which length to substitute for a, b, or c in the Pythagore
Romashka [77]

Answer:

When Sum of square of two Sides is equal to square of third side of triangle.

Step-by-step explanation:

Given:

Three side length of triangle are given we need find the which value to substitute for a, b, c in Pythagoras theorem.

First we will find the squares of all length, then we will check which two square of side are equal to square of third side as per Pythagoras theorem.

Hence the two side would according be a and b and third side will become c.

For example if length of triangle  is given as 6 cm, 8 cm and 10 cm.

We will first take square of all

6^2=36\\8^2=64\\10^2=100

Now we can see that

36+64=100\\6^2+8^2=10^2

Now by Pythagoras theorem.

a^2+b^2=c^2

Hence we can say a = 6 cm, b = 8 cm, c= 10 cm  

6 0
3 years ago
Someone please help me with this and explain it please.
Yuki888 [10]
<h3>Answer: Choice D) \sqrt{34}, 6, 2\pi, \sqrt{42}</h3>

===========================================

Explanation:

Use a calculator to find the decimal form of each of the following below (values are approximate; rounded to 2 decimal places)

  • 2pi = 6.28
  • sqrt(42) = 6.48
  • sqrt(34) = 5.83

We see that the order of the decimal values is: 5.83, 6, 6.28, 6.48

So the order of the terms, from smallest to largest, is \sqrt{34}, 6, 2\pi, \sqrt{42}

5 0
3 years ago
I need to find the area. (please help me quickly &amp; the answer and explanation plz) POINTS: 15 please give real answers
Serggg [28]

Answer: 7.8

Step-by-step explanation:

you would multiply 3 x 2.6 and that would give you the answer

7 0
2 years ago
Read 2 more answers
Help me and ill give brainlist
Cerrena [4.2K]

3 X 10 = 30/2 = 15

area: 15yd^2

3 0
2 years ago
Read 2 more answers
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