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
kap26 [50]
3 years ago
8

PLEASE HELP ASAP!!! CORRECT ANSWER ONLY PLEASE!!!Which expression is equal to 5/13√ ?

Mathematics
2 answers:
Anvisha [2.4K]3 years ago
7 0

\dfrac{5}{\sqrt{13}}\cdot\dfrac{\sqrt{13}}{\sqrt{13}}=\dfrac{5\sqrt{13}}{13}

\text{Used:}\ \sqrt{a}\cdot\sqrt{a}=a

Mariana [72]3 years ago
5 0

Answer:

5√13 / 13

Step-by-step explanation:

If we have the expression:

<em>5 / √13</em>

We can only change the way it is expressed by multiplying it by 1 to not change the value and we know that1 is the same as a number divided by the same number:

In this case, we are going to multiply the expression by <em>√13 / √13  which is equal to 1:</em>

<em>(5 / √13) * (√13 / √13)</em>

Solving we get:

<em>5*√13 / √13*√13</em>

<em>5*√13 / √13²</em>

5*√13 / 13

<em />

You might be interested in
Which of the following is equivalent to 92 1/2 pounds in ounces
viva [34]
Well first, you have to see how many ounces are in 1 pound and there are 16 ounces in 1 pound.
So now, I am going to multiply 16×92 1/2 ( or 92.5 )
SO:      92.5
       ×    16
       --------------
         1480 ounces
7 0
3 years ago
Please help I'm stuck on this question! worth 15+ points!!
zvonat [6]

Answer:

152

Step-by-step explanation:

360-(118+54)

3 0
2 years ago
Read 2 more answers
What does it mean to evaluate an expression in 5th grade
MrRa [10]

Answer:

Usually it means to solve it. Sometimes they give you values to substitute in for variables (letters) in the math sentence/equation/expression.

Does that make sense?

Step-by-step explanation:

3 0
3 years ago
5.2.14. For the negative binomial pdf p (k; p, r) = k+r−1 (1 − p)kpr, find the maximum likelihood k estimator for p if r is know
Volgvan

Answer:

\hat p = \frac{r}{\bar x +r}

Step-by-step explanation:

A negative binomial random variable "is the number X of repeated trials to produce r successes in a negative binomial experiment. The probability distribution of a negative binomial random variable is called a negative binomial distribution, this distribution is known as the Pascal distribution".

And the probability mass function is given by:

P(X=x) = (x+r-1 C k)p^r (1-p)^{x}

Where r represent the number successes after the k failures and p is the probability of a success on any given trial.

Solution to the problem

For this case the likehoof function is given by:

L(\theta , x_i) = \prod_{i=1}^n f(\theta ,x_i)

If we replace the mass function we got:

L(p, x_i) = \prod_{i=1}^n (x_i +r-1 C k) p^r (1-p)^{x_i}

When we take the derivate of the likehood function we got:

l(p,x_i) = \sum_{i=1}^n [log (x_i +r-1 C k) + r log(p) + x_i log(1-p)]

And in order to estimate the likehood estimator for p we need to take the derivate from the last expression and we got:

\frac{dl(p,x_i)}{dp} = \sum_{i=1}^n \frac{r}{p} -\frac{x_i}{1-p}

And we can separete the sum and we got:

\frac{dl(p,x_i)}{dp} = \sum_{i=1}^n \frac{r}{p} -\sum_{i=1}^n \frac{x_i}{1-p}

Now we need to find the critical point setting equal to zero this derivate and we got:

\frac{dl(p,x_i)}{dp} = \sum_{i=1}^n \frac{r}{p} -\sum_{i=1}^n \frac{x_i}{1-p}=0

\sum_{i=1}^n \frac{r}{p} =\sum_{i=1}^n \frac{x_i}{1-p}

For the left and right part of the expression we just have this using the properties for a sum and taking in count that p is a fixed value:

\frac{nr}{p}= \frac{\sum_{i=1}^n x_i}{1-p}

Now we need to solve the value of \hat p from the last equation like this:

nr(1-p) = p \sum_{i=1}^n x_i

nr -nrp =p \sum_{i=1}^n x_i

p \sum_{i=1}^n x_i +nrp = nr

p[\sum_{i=1}^n x_i +nr]= nr

And if we solve for \hat p we got:

\hat p = \frac{nr}{\sum_{i=1}^n x_i +nr}

And if we divide numerator and denominator by n we got:

\hat p = \frac{r}{\bar x +r}

Since \bar x = \frac{\sum_{i=1}^n x_i}{n}

4 0
3 years ago
Can you pls help me out with this question... got my exams coming up .. asap help will be highly appreciated..
azamat

Answer:

dude use the order of operations the square root the thing

PLEASE MARK ME AS BRAINLIST

6 0
3 years ago
Other questions:
  • Wanda started walking along a path 2 minutes (120 seconds) before Dave. Wanda walked at a constant rate of 5 feet per second. Da
    8·1 answer
  • HELP PLEASE THANKS!!!!!
    7·2 answers
  • The bases on a baseball diamond are 90 feet apart. how far is it from home plate to second base?
    11·2 answers
  • Simplify the expression without solving for x <br> 8x +4-3-x=
    6·2 answers
  • Emergency !!<br><br><br><br> y=2x^(2)-12x+46<br> please put steps
    13·1 answer
  • Why can’t you raise 0 to a negative exponent?
    9·1 answer
  • Which linear function represents the line given by the point-slope equation y + 1 = –3(x – 5)?
    15·2 answers
  • Each year, roughly 10^6 computer programmers each make $10^5. How much money is this all together? Express your answer both as a
    11·1 answer
  • Choose all the comparisons that are true.
    12·1 answer
  • How do you add 23+(2x)<br> ;()<br><br> freE PoInT
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!