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Anit [1.1K]
3 years ago
14

GUYSSSS PLEASEEEEEEEEEE HELP!!!!!! Your friend is using Descartes’ Rule of Signs to find the number of negative real roots of

mg src="https://tex.z-dn.net/?f=x%5E%7B3%7D%20%2Bx%5E%7B2%7D%20%2Bx%2B1%3D0" id="TexFormula1" title="x^{3} +x^{2} +x+1=0" alt="x^{3} +x^{2} +x+1=0" align="absmiddle" class="latex-formula">. Describe and correct the error. Correct answer will get brainliest.
Mathematics
1 answer:
jeka57 [31]3 years ago
7 0

Answer:

your answer should be a

Step-by-step explanation:

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Which graph shows proportional relationship between x and y
tensa zangetsu [6.8K]
I believe graph D shows proportional relationship
6 0
3 years ago
What is the volume of a right circular cylinder with a radius of 5cm and a height of 12cm?
Tom [10]

Answer: V=942.47cm^{3}


Step-by-step explanation:

1. To solve this problem you must use the following formula for calculate the volume of a right circular cylinder, which is shown below:

V=\pi*r^{2}*h

Where r is the radius and h is the height.

2. Now, you must substitute the values given in the problem. Therefore, you obtain the following result:

V=\pi*(5cm)^{2}*(12cm)

V=942.47cm^{3}


3 0
4 years ago
Read 2 more answers
60/8+X + 60/8-X = 16
Anuta_ua [19.1K]

Answer:

<h2>x = -2 or x = 2</h2>

Step-by-step explanation:

Domain:\\8+x\neq0\ \wedge\ 8-x\neq0\\\boxed{D:x\neq-8\ \wedge\ x\neq8}\\\\\dfrac{60}{8+x}+\dfrac{60}{8-x}=16\\\\\dfrac{60(8-x)}{(8+x)(8-x)}+\dfrac{60(8+x)}{(8+x)(8-x)}=16\qquad\text{use}\ a^2-b^2=(a-b)(a+b)\\\\\dfrac{60(8-x)+60(8+x)}{8^2-x^2}=16\qquad\text{use the distributive property}\\\\\dfrac{(60)(8)+(60)(-x)+(60)(8)+(60)(x)}{64-x^2}=16\\\\\dfrac{480-60x+480+60x}{64-x^2}=16\qquad\text{combine like terms}\\\\\dfrac{(480+480)+(-60x+60x)}{64-x^2}=16\\\\\dfrac{960}{64-x^2}=16

\dfrac{960}{64-x^2}=\dfrac{16}{1}\qquad\text{cross multiply}\\\\16(64-x^2)=(960)(1)\qquad\text{use the distributive property}\\\\(16)(64)+(16)(-x^2)=960\\\\1024-16x^2=960\qquad\text{subtract 1024 from both sides}\\\\1024-1024-16x^2=960-1024\\\\-16x^2=-64\qquad\text{divide both sides by (-16)}\\\\\dfrac{-16x^2}{-16}=\dfrac{-64}{-16}\\\\x^2=4\to x=\pm\sqrt4\\\\x=\pm2\in D

3 0
4 years ago
Which expression is equivalent to the one below? check all that apply. 81x
olga_2 [115]

Answer:

The correct options are A ,C and F.

Step-by-step explanation:

The given expression is

81^x

Calculate the simplified form of given options.

A.

(9\cdot 9)^x=81^x

B.

9\cdot 9^{2x}=9\cdot (9^2)^x=9(81)^x

C.

9^x\cdot 9^x=(9\cdot 9)^x=81^x

D.

9^2\cdot 9^x=81(9^x)

E.

9\cdot 9^x=9(9^x)

F.

9^{2x}=(9^2)^x=81^x

Therefore  correct options are A ,C and F.

4 0
3 years ago
Read 2 more answers
500,8000 in expanded form
MakcuM [25]
5,000,000+8,000
expanded form.
4 0
4 years ago
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