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kirza4 [7]
3 years ago
13

Question 1Is the expression x^3*x^3*x^3equivalent to x^(3*3*3)? Why or why not? Explain your reasoning.No because the law of exp

onentsQuestion 2Rewrite in simplest radical form1/x^((-3)/6)Show each step of your process.Question 3Rewrite in simplest rational exponent form √x • 4√x. Show each step of your process.Question 4Rewrite in simplest radical formx^(5/6)/x^(1/6)Show each step of your process.Question 5Which of the following expressions are equivalent? Justify your reasoning.4√x31/x^(-1)10√x5•x4•x2x^(1/3)*x^(1/3)*x^(1/3)
Mathematics
1 answer:
Ira Lisetskai [31]3 years ago
5 0

Answer: Question 1) No, because according to the law of exponents

x³.x³.x³ = x³⁺³⁺³ = x⁹

and x⁽³*³*³⁾ = x²⁷

Question 2) √x

Question 3) 4x

Question 4) ∛x²

Question 5) B = D

Step-by-step explanation:

Question 1) Is the expression x^3*x^3*x^3 equivalent to x^(3*3*3)? Why or why not? Explain your reasoning.

No, because according to the law of exponents

x³.x³.x³ = x³⁺³⁺³ = x⁹

and x⁽³*³*³⁾ = x²⁷

Question 2) Rewrite in simplest radical form 1/x^((-3)/6). Show each step of your process.

simplifying the denominator expoent: 1/x^((-3)/6) = 1/x^(-1/2)

apply the expoent to the hole fraction: 1/x^(-1/2) = (1/x)^(-1/2)

changing the signal on the expoent: (1/x)^(-1/2)  = (x)^(1/2)

changing the expoent into root: (x)^(1/2) = √x

1/x^((-3)/6) = 1/x^(-1/2) = (1/x)^(-1/2) = (x)^(1/2) = √x

Question 3) Rewrite in simplest rational exponent form √x • 4√x. Show each step of your process.

√x • 4√x = 4√x • √x = 4√x² = 4x

Question 4) Rewrite in simplest radical formx^(5/6)/x^(1/6). Show each step of your process.

x^⁽⁵/⁶⁾/x^⁽¹/₆⁾ = x^⁽⁵/⁶⁾ • 1/x^⁽¹/₆⁾ = x^⁽⁵/⁶⁾ • x^⁽⁻¹/₆⁾ = x^⁽⁵/⁶ ⁻ ¹/⁶) = x^⁽⁴/⁶⁾ = x^⁽²/₃⁾ = ∛x²

Question 5) Which of the following expressions are equivalent? Justify your reasoning.

A. ⁴√x³    B. 1/x⁻¹    C. ¹⁰√x⁵•x⁴•x²     D. x¹/³•x¹/³•x¹/³

A. ⁴√x³ = x³/⁴

B. 1/x⁻¹ = (1/x)⁻¹ = x

C. ¹⁰√x⁵•x⁴•x² = ¹⁰√x¹¹ = x¹¹/¹⁰

D. x¹/³•x¹/³•x¹/³ = x⁽¹/³⁺¹/³⁺¹/³⁾ = x³/³ = x

So, B = D

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slava [35]

Answer:

I=\frac{1000}{exp^{0,806725*t-0.6906755}+1}

Step-by-step explanation:

The rate of infection is jointly proportional to the number of infected troopers and the number of non-infected ones. It can be expressed as follows:

\frac{dI}{dt}=a*I*(1000-I)

Rearranging and integrating

\frac{dI}{dt}=a*I*(1000-I)\\\\\frac{dI}{I*(1000-I)}=a*dt\\\\\int\frac{dI}{I*(1000-I)}=\int a*dt\\\\-\frac{ln(1000/I-1)}{1000}+C=a*t

At the initial breakout (t=0) there was one trooper infected (I=1)

-\frac{ln(1000/1-1)}{1000}+C=0\\\\-0,006906755+C=0\\\\C=0,006906755

In two days (t=2) there were 5 troopers infected

-\frac{ln(1000/5-1)}{1000}+0,006906755=a*2\\\\-0,005293305+0,006906755=2*a\\a = 0,00161345 / 2 = 0,000806725

Rearranging, we can model the number of infected troops (I) as

-\frac{ln(1000/I-1)}{1000}+0,006906755=0,000806725*t\\\\-\frac{ln(1000/I-1)}{1000}=0,000806725*t-0,006906755\\-ln(1000/I-1)=0,806725*t-0.6906755\\\\\frac{1000}{I}-1=exp^{0,806725*t-0.6906755}  \\\\\frac{1000}{I}=exp^{0,806725*t-0.6906755}+1\\\\I=\frac{1000}{exp^{0,806725*t-0.6906755}+1}

6 0
3 years ago
You invested ​$26,000 in two accounts paying 2% and 3% annual​ interest, respectively. If the total interest earned for the year
mihalych1998 [28]

Answer:

You invested $22,000 in two accounts paying 3% and 5% annual interest, respectively. If the total interest earned for the year was $980, how much was invested at each rate?

Step-by-step explanation:

let x=amt invested at 3% rate of interest.

22000-x=amt invested at 5% rate of interest.  

.03x+.05(22000-x)=980

.03x+1100-.05x=980

.02x=120

x=6000

22000-x=16000

amt invested at 3% rate of interest=$6,000

amt invested at 5% rate of interest=$16,000

<h2><em><u>Hope iit help you mark as Brainlist</u></em></h2>
7 0
3 years ago
One ballispicked at random from a box containing 3redballs and 1green balls. If X is the number of redballs picked, find the pro
Paladinen [302]

Answer:

P(X = 0) = 0.25

P(X = 1) = 0.75

Step-by-step explanation:

A probability is the number of desired outcomes divided by the number of total outcomes.

The probability distribution of X.

3 red balls out of 4, one picked, so we can have either 0 red balls or 1 red ball. The probability disitribution is the probability of each outcome.

P(X = 0) = \frac{1}{4} = 0.25

P(X = 1) = \frac{3}{4} = 0.75

6 0
3 years ago
A=1/2h(B+b); A=45, B=4, b=5
klemol [59]
Answer: h=10

Solving Steps:
45 = 1/2h x (4+5)
45 = 1/2h x 9
45 = 9/2h
10 = h
h = 10
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3 years ago
What is 5.3809 rounded to the nearest thousandth?<br>Enter your answer ​
Hatshy [7]

Answer:

5.381

Step-by-step explanation:

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3 years ago
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