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
Leya [2.2K]
3 years ago
6

<strong>Racionaliza las siguientes expresiones:</strong><br />a) 1-√3/5√2<br />b) 3-√3/3+√3

Mathematics
1 answer:
Nostrana [21]3 years ago
7 0
a) \frac{1- \sqrt{3} }{5 \sqrt{2} } = \frac{\sqrt{2}- \sqrt{6}  }{10} \\\\&#10;b) \frac{3- \sqrt{3} }{3+\sqrt{3}} = \frac{3\sqrt{3}-3}{6} = \frac{3(\sqrt{3}-1)}{6} =\frac{\sqrt{3}-1}{2}.
You might be interested in
In a pizza takeout restaurant, the following probability distribution was obtained for the number of toppings ordered on a large
Elis [28]

Answer:

The random variable (number of toppings ordered on a large pizza) has a mean of 1.14 and a standard deviation of 1.04.

Step-by-step explanation:

<em>The question is incomplete:</em>

<em>The probability distribution is:</em>

<em>x   P(x) </em>

<em> 0   0.30 </em>

<em>1    0.40 </em>

<em>2   0.20 </em>

<em>3   0.06 </em>

<em>4   0.04</em>

The mean can be calculated as:

M=\sum p_iX_i=0.3\cdot 0+0.4\cdot 1+0.2\cdot 2+0.06\cdot 3+0.04\cdot 4\\\\M=0+0.4+0.4+0.18+0.16\\\\M=1.14

(pi is the probability of each class, Xi is the number of topping in each class)

The standard deviation is calculated as:

s=\sqrt{\sum p_i(X_i-M)^2}\\\\s=\sqrt{0.3(0-1.14)^2+0.4(1-1.14)^2+0.2(2-1.14)^2+0.06(3-1.14)^2+0.04(4-1.14)^2}\\\\s=\sqrt{0.3(-1.14)^2+0.4(-0.14)^2+0.2(0.86)^2+0.06(1.86)^2+0.04(2.86)^2}\\\\ s=\sqrt{0.3(1.2996)+0.4(0.0196)+0.2(0.7396)+0.06(3.4596)+0.04(8.1796)}\\\\s=\sqrt{0.3899+0.0078+0.1479+0.2076+0.3272}\\\\ s=\sqrt{ 1.0804 }\\\\s\approx 1.04

3 0
2 years ago
. An urn contains 6 blue and 5 red marbles. Reach in and grab one marble and then another (without replacing the first one). Wha
natima [27]

Probability that you have chosen 2 red marbles is 3/11

<h2>How to solve?</h2>

Total number of marbles = 6 + 5 = 11

Number of red marbles = 6

Number of blue marbles = 5

Important Points:

1. Replacement is not allowed

2. Blue is followed by Red

Probability has been introduced in Maths to predict how likely events are to happen. The meaning of probability is basically the extent to which something is likely to happen.

Probability of Blue first = 5/11

Probability of Red second = 6/10 (one marble is already taken out)

Probability = 5/11 * 6/10 = 3/11

Learn more about Probability:

brainly.com/question/4313883

#SPJ4

8 0
1 year ago
3x+ 2y= 4 solving for x
Jet001 [13]

First step: Isolate the term that has x. To do that, subtract 2y from both sides.

3x + 2y = 4

3x = -2y + 4

Now divide both sides by 3.

x = \dfrac{-2y + 4}{3}

4 0
3 years ago
Read 2 more answers
Arnie is mixing red and yellow paints to make two different shades of orange. To make 1 cup of dark orange​ paint, he needs 7 ou
ASHA 777 [7]

Answer:

No conozco esta respuesta. Esta en el libro

Step-by-step explanation:

8 0
2 years ago
If you can help with any of these two or both that would be great ! :) <br> thanks
Vladimir [108]

Answer:

hmmm not sure

Step-by-step explanation:

try mulitply the numbers

7 0
2 years ago
Other questions:
  • Kirk, Tanya, Ben, maya and Rico equally share 3 apples
    6·2 answers
  • consuder the following polynomial equation x(x-3)(x+6)(x-7)=0. which of the following are zeros of the equation? select all that
    5·1 answer
  • A rectangle has the vertices of 0,0 3,0 0,6 what is the area
    14·1 answer
  • Find the volume round to the nearest tenth
    10·2 answers
  • Quiz
    10·1 answer
  • How do I delete this
    7·1 answer
  • S
    5·1 answer
  • PLEASE HELP MAJOR PLEASE THIS IS DUE AT 12AM F Solve. (180 - 2) + (90 - 1) = 210​
    15·1 answer
  • What is the slope-intercept equation of the line below? 61 -5
    11·1 answer
  • PLEASE ANSWER 50 POINTS!!<br> what is [4^2+(5+3x4)]x3=
    15·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!