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
kiruha [24]
3 years ago
12

Please help me with 6-14.

Mathematics
1 answer:
noname [10]3 years ago
3 0
5) 7√5


6) 6√3 - 2√27, or 2√27 = 2√(3² x 3)= 2x3√3 = 6√3, hence 6√3 - 6√3 =0

7) √5 . √20 = √(5.20) =√100 = 10

8) -3/√2. multiply numerator & denominator by √2 ==>(-3√2)/(√2 .√2) =-3√2/2

9) √5 (6√2 - √5)  = 6√10 - 5

10) (4-√3)(2+√3) = 8+√3 - 2√3-3 = 5-√3

11) (5+√3)². It's of the form of (a+b)² = a²+2ab+b² ==> 28+10√3

12) (9-√5)(9+√5) .It's of the form of (a-b)(a+b) =a² -b² =49-5 = 44

13) The conjugate of (a+√b) is (a-√b). Multiply numerator & denominator by the conjugate: 6(8+√2)/(8-√2)(8+√2) = (48+6√2)/(64-4) =48+6√2)/60
Simplify by 6 ===> (8+√2)/10

14) (2+√2) /(1-√2). Multiply by the conjugate of the denominator:
       (2+√2)(1+√2)/(1-√2)(1+√2) = . (4+3√2) / 1-2 = - (4+3√2)= -4-3√2

You might be interested in
Find the bearing of the ship. Round to the nearest tenth of a degree if necessary.
adelina 88 [10]

9514 1404 393

Answer:

  117°

Step-by-step explanation:

We assume you want to report your bearing as an angle measured CW from North. For conventional angles greater than 90°, it will be ...

  450° -angle = 450° -333° = 117°

The bearing of the ship is 117°.

4 0
3 years ago
Simplify x to the 1/3 power (x to the 1/2 power + 2x to the 2 power )
OverLord2011 [107]

Answer:

x^(5/6) + 4(x^(7/3))


Step-by-step explanation:

Simplify x to the 1/3 power MULTIPLIED BY (x to the 1/2 power + 2x to the 2 power )


Simplify x^(1/3) × (x^(1/2) + (2x)^2)

= x^(1/3)(x^(1/2)) + x^(1/3)((2x)^2)

= x^(1/3+1/2) + 4(x^(1/3+2))

= x^(5/6) + 4(x^(7/3))


x^(1/3) is y such that y^3 = x

(x^(1/3) × x^(1/3) × x^(1/3)) = x^(1/3+1/3+1/3) = x^1 = x


x^(1/2) = √2 = y such that y^2 = x

(2x)^2 = 4x^2






6 0
3 years ago
ZABC and ZQRS are supplementary angles.
Leno4ka [110]

Answer:

Solution given:

<ABC and <QRS are supplementary angles.

<ABC = 91°

we have

<ABC +<QRS=180°[supplementary]

<QRS=180°-91°=89°

m<QRS=89°

8 0
3 years ago
Read 2 more answers
4(x-4) solve and why I don't get it
Rudiy27
4 will multiply inside that brackets so
4(x-4)=4x-4
7 0
3 years ago
Read 2 more answers
The public library has to move 42,000 books to its new location. The movers can pack an average of 45 books in every box. The tr
Anni [7]

Answer:

<h2> 934boxes</h2><h2> 4 trips</h2>

Step-by-step explanation:

Given the total number of books 42,000

Ok, firstly let us calculate the number of boxes required, given that a box can contain 45 books

number of boxes= 42,000/45  

number of boxes=933.3 boxes

approximately 934boxes

Also, given that the truck can carry online 250 boxes in one trip

then it must make 934/250= 3.7 trips

approximately the truck will make 4 trips to carry all the boxes

7 0
4 years ago
Other questions:
  • 01:14:29 The Schwartz family spent a total of $111.75 for Internet service for 3 months. Each month they received $5.50 as a cre
    9·1 answer
  • I really need help on these few questions. I real deal don't understand them so anyone who does can you please help me?
    13·1 answer
  • Help please!!!<br> (please show work)
    9·2 answers
  • What's is the answer to (-5)^4​
    15·1 answer
  • Reflect the point (8,-7) across the x-axis
    14·2 answers
  • Cathy bought of a gallon of milk. She drank of a gallon.<br> How much milk did she have left?
    14·2 answers
  • Find the gradient of the line segment between the points (0,3) and (1,8).
    11·1 answer
  • Suppose that in a random sample of size 200, standard deviation of the sampling distribution of the sample mean 0.08. researcher
    8·1 answer
  • Help is appreciated! :)<br>(Question is in image below)
    13·1 answer
  • Help me pleaseeeeeee
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!