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
Likurg_2 [28]
3 years ago
7

Rationalise 1/√5 please tell​

Mathematics
1 answer:
Assoli18 [71]3 years ago
6 0

Answer:

Step-by-step explanation:

1/\sqrt{5}

=1\sqrt{5} *\sqrt{5}/\sqrt{5}

=1*\sqrt{5}/\sqrt{5}*\sqrt{5}

=1\sqrt{5}/5

You might be interested in
et f(x) = x + |2x − 3|. Find all solutions to the equation f(x) = 12. (Enter your answers as a comma-separated list. If an answe
Alinara [238K]

Answer:

1. {5,-9}

2.{4}

3.{9/2}

Step-by-step explanation:

The equation f(x)=x+\lvert 2x-3 \rvert=12 can be solved as follows:

x+\lvert 2x-3 \rvert =12\,\,\,\text{(given equation)}

\lvert 2x-3 \rvert =12-x

2x-3=12-x\,\,\text{or}\,\,2x-3=-(12-x)

3x=15\,\,\text{or}\,\,\x=-9

Then, the solutions of the equation are x=5, x=-9.

Now, if g(x)=5x-3+\lvert x+4\rvert, we can solve the equation g(a)=4a+9 as follows:

5a-3+\lvert a+4 \rvert =4a+9

\lvert a+4\rvert =4a+9-5a+3

a+4 =-a+12\,\,\text{or}\,\,a+4=-(-a+12)

2a=8\,\,\text{or}\,\,4=12

So, the unique solution of this last equation is a=4

The last equation is h(x-1)=x-3, where h(x)=\lvert x \rvert -2x+5.. To solve this equation we can proceed as follows:

h(x-1)=x-3

\lvert x-1\rvert -2(x-1)+5=x-3

\lvert x-1 \rvert -2x+2+5=x-3

\lvert x-1\rvert =3x-10

x-1=3x-10\,\,\text{or}\,\,x-1=-(3x-10)

-2x=-9\,\,\text{or}\,\,4x=11

x=9/2\,\,\text{or}\,\,x=11/4

But, x=11/4 is not a solution of this equation. So the unique solution is x=9/2.

8 0
3 years ago
HELP ASAP I DONT GET IT ITS DUE IN 14 MINS
Oksanka [162]

Answer:

110.5 i think D

Step-by-step explanation:

just me doing work vvvvv

65 + 45.5 = 110.5

---

7 x 6.5

45.5

7 0
3 years ago
Read 2 more answers
A bag contains 6red balls,4 green balls,and3,blue balls if we choose a ball then another one what is the probability That the fi
netineya [11]

Total balls: 6 + 4 + 3 = 13

First pick green = total green / total balls = 4/13


adter picking the first ball there are 12 balls left.

Picking red = total red/ total balls left = 6/12 = 1/2


probability of picking both = 4/13 x 1/2 = 4/26 = 2/13


answer: 2/13

7 0
2 years ago
I just failed a test cansomeone explained to me what inequalitys are
neonofarm [45]

Answer:

An inequality is a relation which makes a non equal comparison between two of more numbers or other mathematic equations. > I'd greater than < is less than = equal to. ≥ is greater than or equal ≤ less than or equal to. = equal to ≠ not equal

6 0
3 years ago
Read 2 more answers
PLEASE HELP IM DKING HOMEWORK AND I AM STUCK
serious [3.7K]

Answer:

a .18√2 is correct answer

4 0
3 years ago
Other questions:
  • A rectangular floor measures 10 1/8 feet by 13 3/4 feet. If Emily buys 150 square feet of carpet, will she have enough carpet to
    7·2 answers
  • Slope-intercept form graph and solve the system of equations <br> y=2x+8 <br> -x+y=6
    11·1 answer
  • Graph the equation below by plotting the y-intercept and a second point on the line. <br> y=3/2x-1
    11·2 answers
  • PLEASE HELP! 
    6·1 answer
  • What is a 15 yard gain 
    11·1 answer
  • Can one of y’all help me with this pls
    12·1 answer
  • For the reaction 2Fe + O2 → 2FeO, how many grams of iron oxide are produced from 42.4 mol of iron?
    14·1 answer
  • Do you know what the variables could be
    11·1 answer
  • I need to get this done, please help
    6·1 answer
  • Please help me with this
    10·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!