1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Finger [1]
3 years ago
11

Plz help!!!!!!!!!!!!

Mathematics
2 answers:
neonofarm [45]3 years ago
5 0

Answer:

Step-by-step explanation:

Let's just see what happens if we do

(-32)^(1/5)

That means what number do you start with that when multiplied 5 times gives you - 32?

The answer is - 2

-2 * - 2 * -2 * -2 * -2 = -32

Now when you have a root sign that goes to the 1/5 power, you can take out 1 of the factors and throw the other 4 away.

\sqrt[5]{-2 * - 2 * - 2 * -2 * -2} = - 2 take one - 2 from under the root sign and throw the other 4 away

That's not the answer. We have one more step.

What is -2 to the 3rd power.

(-2)^3 = - 8

So the answer is -8

\sqrt[5]{- 32}^3 = -8

sergejj [24]3 years ago
4 0

Answer:

-8

Step-by-step explanation:

(-32)^(3/5) is equivalent to (-2^5)^(3/5) and applying exponent rules then simplifying you can get your answer.

You might be interested in
Help please! Quick math question
son4ous [18]

\huge\mathfrak\red {Answer:}

If the angle above b is 54° then,

<h2>a = 54°</h2>

(Corresponding angles of a parallel line)

<h2>b = 126°</h2>

(Cause <b and 54° form a linear pair which is 180° and 180° -54° = 126°)

\mathfrak\purple {Hope\: this\: helps\: you...}

6 0
4 years ago
Changing the mean and standard deviation of a Normal distribution by a moderate amount can greatly change the percent of observa
sweet-ann [11.9K]

Answer:

a) P(X>750)=P(\frac{X-\mu}{\sigma}>\frac{750-\mu}{\sigma})=P(Z1.798)

P(Z>1.798)=1-P(z

f. 3.59 %

b) P(X>750)=P(\frac{X-\mu}{\sigma}>\frac{750-\mu}{\sigma})=P(Z2.21)

P(Z>2.21)=1-P(Z

d. 1.36 %

Step-by-step explanation:

Previous concepts

Normal distribution, is a "probability distribution that is symmetric about the mean, showing that data near the mean are more frequent in occurrence than data far from the mean".

The Z-score is "a numerical measurement used in statistics of a value's relationship to the mean (average) of a group of values, measured in terms of standard deviations from the mean".  

Part a

Let X the random variable that represent the scores of men of a population, and for this case we know the distribution for X is given by:

X \sim N(527,124)  

Where \mu=65.5 and \sigma=2.6

We are interested on this probability

P(X>750)

And the best way to solve this problem is using the normal standard distribution and the z score given by:

z=\frac{x-\mu}{\sigma}

If we apply this formula to our probability we got this:

P(X>750)=P(\frac{X-\mu}{\sigma}>\frac{750-\mu}{\sigma})=P(Z1.798)

And we can find this probability using the complement rule and with the normal standard distribution table or excel:

P(Z>1.798)=1-P(Z

So then the correct answer for this case would be:

f. 3.59 %

Part b

Let X the random variable that represent the scores of women's of a population, and for this case we know the distribution for X is given by:

X \sim N(496,115)  

Where \mu=496 and \sigma=115

We are interested on this probability

P(X>750)

And the best way to solve this problem is using the normal standard distribution and the z score given by:

z=\frac{x-\mu}{\sigma}

If we apply this formula to our probability we got this:

P(X>750)=P(\frac{X-\mu}{\sigma}>\frac{750-\mu}{\sigma})=P(Z2.21)

And we can find this probability using the complement rule and with the normal standard distribution table or excel:

P(Z>2.21)=1-P(Z

So then the correct answer for this case would be:

d. 1.36 %

7 0
3 years ago
alex and Lara have $21.00 each to spend at a book fair, where all students receive a 35% discount. They both want to purchase a
storchak [24]
Alex is correct the book would cost $18.52 before taxes adding 10% tax the book would cost an additional $1.85 for a total of $20.37. This would be just under the $21.00 that both Alex and Laura had to spend. Laura tried to combined the 35% discount which you cannot do. So yes they both would be able to purchase the book.
6 0
4 years ago
#7 I don't know how to solve this
____ [38]
30+1.95x=7.95x

so, 6x=30

x=5
3 0
3 years ago
The graph below shows the hours students spent studying and their language arts test scores.
Alexandra [31]

Answer:

correct answer is 40

Step-by-step explanation:

hope it helps:D

5 0
3 years ago
Read 2 more answers
Other questions:
  • Find the sum of the finite geometric sequence whose first term is 1.2, whose ratio is 0.5, and which has five terms.
    14·2 answers
  • Help me plz the first number if four
    6·1 answer
  • Simplify<br><br> square root of 3 multiplied by the fifth root of 3.
    13·2 answers
  • Evaluate p(7,5) can someone help
    14·1 answer
  •  What is the equation of a circle with its center at (-5,2) and a radius of 5? IF YOU DONT KNOW DONT ANSWER PLEASE
    6·1 answer
  • Consider the distribution Ber(0.25). Consider the categorical statistical model({a1,..., ax},{Pp}) for this Bernoulli distributi
    12·1 answer
  • If I want to make a profit of 20% of the selling price at 25$ on the pair of jeans, what price should I mark the jeans for?
    11·1 answer
  • To complete a science experiment, Mrs. McWilliams divides 2,184 grams of a chemical equally among the 26 students in her science
    11·1 answer
  • TRULY IN NEED OF HELP PLEASEE
    6·2 answers
  • 12 cm<br> 5 cm<br> 10 cm<br> 6 cm
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!