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
Ne4ueva [31]
4 years ago
14

Here goes another question: 4/5%9/10 and please if you can with procces

Mathematics
2 answers:
mylen [45]4 years ago
8 0
8/9 is the answer to your question 
love history [14]4 years ago
7 0
When you divide a fraction by another fraction, it is the same thing as multiplying that fraction by its reciprocal.

The reciprocal is the 'flipped' version of a fraction where the numerator becomes the denominator and the denominator becomes the numerator.

for example, the reciprocal of 9/10 is 10/9

Knowing this information 4/5÷9/10 is the same as 4/5×10/9

Now we can solve...

\frac{4}{5} * \frac{10}{9} = \frac{40}{45} = \frac{8}{9}

Answer= 8/9

You might be interested in
Three sets Venn diagram
Anon25 [30]

Answer:

I hope this helps a little bit

8 0
3 years ago
A random sample of 36 observations has been drawn from a normal distribution with mean 50 and standard deviation 12. Find the pr
Gre4nikov [31]

Answer:

z= \frac{47 -50}{\frac{12}{\sqrt{36}}}=-1.5

z= \frac{53 -50}{\frac{12}{\sqrt{36}}}=1.5

And using a calculator, excel ir the normal standard table we have that:

P(47 \leq \bar X \leq 53) =P(-1.5 \leq Z \leq 1.5)

And we can calculate the probability like this:P(-1.5 \leq Z \leq 1.5) = P(zStep-by-step explanation:

A random sample of 36 observations has been drawn from a normal distribution with mean 50 and standard deviation 12. Find the probability that the sample mean is in the interval 47<=X<53. Is the assumption of normality important. Why?

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".  

Solution to the problem

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

X \sim N(50,12)  

Where \mu=50 and \sigma=12

Since the distribution for X is normal then we know that the distribution for the sample mean \bar X is given by:

\bar X \sim N(\mu, \frac{\sigma}{\sqrt{n}})

We can find the probability required like this:

z= \frac{47 -50}{\frac{12}{\sqrt{36}}}=-1.5

z= \frac{53 -50}{\frac{12}{\sqrt{36}}}=1.5

And using a calculator, excel ir the normal standard table we have that:

P(47 \leq \bar X \leq 53) =P(-1.5 \leq Z \leq 1.5)

And we can calculate the probability like this:

P(-1.5 \leq Z \leq 1.5) = P(z

4 0
3 years ago
John bikes 1 1/2 miles in every 1/5 hour.
Aleks [24]

Answer:

7 1/2 miles

Step-by-step explanation:

1 1/2 miles in every 1/5 hour

x miles in 1 hour

x equals 1 times 1 1/2 divided by 1/5

x equals 5 times 1 1/2

x equals 7 1/2

6 0
3 years ago
Read 2 more answers
Let X equal the number of hours that a randomly selected person from City A reads the news online each day. Suppose that X has a
Nina [5.8K]

Answer:

P(Y>X) = \frac{17}{32}

Step-by-step explanation:

Recall that since X is uniformly distributed over the set [1,4] we have that the pdf of X is given by f(x) = \frac{1}{3} if 1\leq x \leq 4 and 0 otherwise. In the same manner, the pdf of Y is given by g(y) = \frac{1}{4} if 1\leq y\leq 5 and 0 otherwise.

Note that if Y is in the interval (4,5] then Y>X by default. So, in this case we have that P(Y>X| y in (4,5]) = 1. We want to calculate the probability of having Y in that interval . That is

P(Y>4) = \int_{4}^{5}\frac{1}{4}dy = \frac{1}{4}. Thus, P(Y\leq 4 ) = 1 - P(Y>4)= \frac{3}{4}.

We want to proceed as follows. Using the total probability theorem, given two events A, B we have that

P(A) = P(A|B)\cdot P(B) + P(A|B^c) \cdot P(B^c) In this case, A is the event that Y>X and B is the event that Y is in the interval (4,5].

If we assume that X and Y are independent, then we have that the joint pdf of X,Y is given by h(x,y) = f(x)g(y) = \frac{1}{12} when 1\leq x \leq 4, 1\leq y \leq 4. We can draw the region were Y>X and the function h(x,y) is different from 0. (The drawing is attached). This region is described as follows: 1\leq x \leq 4 and x\leq y \leq 4, then (the specifics of the calculations of the integrals are ommitted)

P(Y>X| y \in [1,4)) = \int_{1}^{4}\int_{x}^{4}\frac{1}{12}dy dx = \frac{1}{12}\int_{1}^{4} (4-x) dx = \frac{1}{12}\left.(4x-\frac{x}{2})\right|_{1}^{4}= \frac{1}{12}(4\cdot 4 - \frac{4^2}{2}-(4-\frac{1}{2}) = \frac{9}{2\cdot 12} = \frac{3}{8}

Thus,

P(Y>X) = 1\cdot \frac{1}{4} + \frac{3}{8}\cdot \frac{3}{4} = \frac{17}{32}

5 0
4 years ago
3(x-6)+6=5x-6 useing distributive property
neonofarm [45]

Answer:

x=-3

Step-by-step explanation:

3(x-6)+6=5x-6 - Problem

The Distributive property says a(b+c)=ab+ac. Using this knowledge, lets solve.

1) Distribute 3 to x and -6:

3x-18+6=5x-6

2) Combine alike terms: (-18 and 6)

3x-12=5x-6

3) Subtract 3x from both sides:

-12=2x-6

4) Add 6 to both sides:

2x=-6

5) Divide both sides by 2:

x=-3

5 0
3 years ago
Other questions:
  • For the normal distribution, the mean plus and minus 1.96 standard deviations will include about what percent of the observatio
    8·1 answer
  • A store has a 25%, percent off sale on coats. With this discount, the price of one coat is $34.50. What is the original price of
    12·1 answer
  • A game show has a bonus round where a contestant gets to spin a balanced wheel that is divided into eighths. The contestants win
    11·1 answer
  • 7. In an isosceles triangle, AB and AC are called the ____________.
    9·1 answer
  • HELP ASAP
    12·1 answer
  • Ashton estimates the square root of 72 in the following way: √72= 2√36=2×6=12 A)Explain why his reasoning is incorrect. B)Estima
    10·1 answer
  • Find the area of this parallelogram. Be sure to include the correct unit in your answer.
    8·1 answer
  • I need help!!!!!!!!!!! Plz
    9·1 answer
  • Alex purchased 29 4x6 prints and 16 5x7 prints from an online printing service and paid $22.89. If 5x7 prints cost $0.84 more th
    6·1 answer
  • What are the center and radius of the equation (x-2)^2 + (y-9)^2 = 36?
    5·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!