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
Alja [10]
3 years ago
6

25. Simplify the following expression. Question 25 please

Mathematics
2 answers:
PtichkaEL [24]3 years ago
6 0

I hope this helps you

bearhunter [10]3 years ago
3 0

Answer:

3  -√5

Step-by-step explanation:

(√5 + 1) / (2 + √5)

Multiply top and bottom of the fraction by the conjugate of 2 + √5 which is  2 - √5.

By doing this we rationalise the denominator:

= (√5 + 1 ) *  ( 2 - √5) /  (2 + √5)(2 - √5)

= (√5 + 1 ) *  ( 2 - √5)/ (4 - 2√5 + 2√5 - 5)

= (2√5 - 5 + 2 - √5) / (4 - 5)

= (√5 - 3) / -1

= 3  -√5

You might be interested in
When Lawrence filled his pool, the water line was 4 in. from the edge of the pool. For the next 5 days, Lawrence noticed that th
tiny-mole [99]
The slope of the line that best models the situation is the rate of change in the level of the pool. From the given problem, the rate of change is 0.5 / day. Thus, the slope is 0.5. The answer to this item is letter B. 
3 0
3 years ago
Find the area of a circle with a radius of 6 feet. Use 3.14 for pi
Alja [10]

Answer:

Replace the value of r in the formula :

A = π • r²

A = π • 6²

A = 113,097

Since you need to round off your answer to one decimal, your final answer is :

A = 113.1 square ft

Step-by-step explanation:

6 0
2 years ago
* offering lots of points. help! *
Licemer1 [7]
This should be right. hopefully you understand

3 0
3 years ago
Niu has decorated x cards. He started with 24 stickers, and he used 4 stickers per card. Which expressions can we use to describ
Kisachek [45]

Answer:

24-4x

Step-by-step explanation:

We have been given that Niu has decorated x cards. He started with 24 stickers and he used 4 stickers per card. So stickers used in x cards will be 4x.

As initial number of stickers was 24, so we can find number of stickers left after decorating x cards by subtracting number of stickers used in x cards from 24.

\text{Number of stickers that Niu has left}=24-4x

Therefore, the expression 24-4x will represent the number of stickers that Niu has left after decorating x cards.


7 0
3 years ago
Read 2 more answers
The sum of two numbers is 40. One number is 4 less than the other. Find the numbers
yawa3891 [41]
One number is 18 and the other is 22
7 0
2 years ago
Other questions:
  • How do write 412.638 using expanded form using decimals
    9·1 answer
  • What is the answer
    10·2 answers
  • Find the area of each sector
    8·1 answer
  • What is the value of X in the equation 3X (-1) / 9Y equals 18 when Y equal 27
    8·1 answer
  • Solve for e (-7)=e/4+14
    14·1 answer
  • HELP i have no clue how to do this hahah
    7·1 answer
  • How do i solve this and what is the answer?
    15·1 answer
  • PLS HELP ITS DUE IN AN HOURR!!!!!
    8·1 answer
  • Put the equation 3y-4x=-6 into slope intercept form
    7·1 answer
  • Find the size of the unknown angle in the triangle​
    6·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!