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Vesnalui [34]
3 years ago
12

Simplify this expression. 3^-3

Mathematics
1 answer:
Sphinxa [80]3 years ago
4 0

Answer:

1/27 is the answer

Step-by-step explanation:

It is 1/(3^3) which is 1/27

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2 x + 5 = 4 x + 8 <br> Pls help
Elanso [62]

Answer:

x= -3/2

Step-by-step explanation:

3 0
3 years ago
If sam has 20 watermelons and he eats 14 how many does he have left?
JulijaS [17]

Answer:

6 duh!

you can do this by yourself lol

7 0
3 years ago
Suppose you observe a data point x = 12 and it is known that this data point came from a normal distribution with mean 5 and sta
mihalych1998 [28]

Answer:

The observation would be considered unusual because it is farther than three standard deviations from the mean.

Step-by-step explanation:

Problems of normally distributed samples are solved using the z-score formula.

In a set with mean \mu and standard deviation \sigma, the zscore of a measure X is given by:

Z = \frac{X - \mu}{\sigma}

The Z-score measures how many standard deviations the measure is from the mean. After finding the Z-score, we look at the z-score table and find the p-value associated with this z-score. This p-value is the probability that the value of the measure is smaller than X, that is, the percentile of X. Subtracting 1 by the pvalue, we get the probability that the value of the measure is greater than X.

When Z has an absolute value higher than 2, the observation is considered unusual.

In this problem, we have that:

\mu = 5, \sigma = 2, X = 12

Z = \frac{X - \mu}{\sigma}

Z = \frac{12 - 5}{2}

Z = 3.5

So the correct answer is:

The observation would be considered unusual because it is farther than three standard deviations from the mean.

3 0
4 years ago
Find the value of x when 6 - 3x = 5x - 10x + 8.<br> The value of x is
katrin2010 [14]

Answer:

Step-by-step explanation:

Simplify

6 + -3x = 5x + -10x + 8

terms:

6 + -3x = 8 + 5x + -10x

Combining  like terms: 5x + -10x = -5x

6 + -3x = 8 + -5x

Solving

6 + -3x = 8 + -5x

Move all terms containing x to the left, all other terms to the right.  (Remember)

Add '5x' to each side of the equation.

6 + -3x + 5x = 8 + -5x + 5x

Combine the like terms -3x + 5x = 2x

6 + 2x = 8 + -5x + 5x

Combine the like terms again  -5x + 5x = 0

6 + 2x = 8 + 0

6 + 2x = 8

Then '-6' to each side of the equation.

6 + -6 + 2x = 8 + -6

Combine the like terms: 6 + -6 = 0

0 + 2x = 8 + -6

2x = 8 + -6

Combine the like terms: 8 + -6 = 2

2x = 2

Then divide each side by '2'.

x = 1

Simplifying

x = 1

7 0
4 years ago
Read 2 more answers
Use Transformation to solve the equation.
nikitadnepr [17]

Hey!

---------------------------------------------------

Question #1:

b + 0.6 = -1

b + 0.6 - 0.6 = -1 - 0.6

b = -1.6

Answer:

\boxed{ \bf b~=~-1.6}

---------------------------------------------------

Question #2:

y - 0.6 = -1.8

y + (-0.6) + 0.6 = 1.8 + 0.6

y = -1.2

Answer:

\boxed{ \bf y~=~-1.2}

---------------------------------------------------

Question #3:

n + 11.5 = -29

n + 11.5 - 11.5 = -29 - 11.5

n = -40.5

Answer:

\boxed{ \bf n~=~-40.5}

---------------------------------------------------

Question #4:

e - 14.4 = -20.8

e - 14.4 + 14.4 = -20.8 + 14.4

e = -6.4

Answer:

\boxed{ \bf e~=~-6.4}

---------------------------------------------------

Hope This Helped! Good Luck!

8 0
4 years ago
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