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
vekshin1
3 years ago
15

5.b) If z^(1/2)=x^(1/2)+y^(1/2) , show that (x+y-z)^2=4xy

Mathematics
1 answer:
Rudik [331]3 years ago
3 0

Answer:

Step-by-step explanation:

  • (x+y-z)²= 4xy
  • (x+y-z)²- 4xy = 0
  • (x+y-z)²-(2√x√y)² = 0
  • (x+y-z-2√x√y)(x+y-z+2√x√y) =0
  • [(√x-√y)²-z]*[(√x+√y)²-z]=0
  • (√x-√y)²-z = 0 or (√x+√y)²-z = 0

We have : z^(1/2)= x^(1/2)+y^(1/2) ⇒ √z = √x + √y ⇒ z = (√x + √y)²

  • so (√x+√y)²-z = 0

so (x+y-z)²= 4xy

You might be interested in
GEOMETRY PLEASE HELP ME URGENT
Basile [38]
Converse (switch p and q)
If an angle is obtuse, then it measures 128°

This is false (a 127° angle is obtuse, but it does not measure 128°)

_____________________________________________________________

Inverse
(negations of p and q)
If an angle does not measure 128°, then it is not obtuse

This is false (a 127° angle does not measure 128°, but it is obtuse)

_____________________________________________________________

Contrapositive (negations of p and q, then switch their places)

If an angle is not obtuse, it does not measure 128°

This is true (any 128° is obtuse; no exceptions)


5 0
3 years ago
Draw the image of the rotation of quadrilateral SORT by 270° about the origin​
cestrela7 [59]

Answer:

70

Step-by-step explanation:

6 0
3 years ago
Read 2 more answers
PLEASE HELP! GIVING OUT BRAINLIEST
cestrela7 [59]

a)  Unit rate  =  24 oz / 10lb   = 2.4 oz /  lb

This means that we  need 2.4 oz of seasoning for every pound of crawfish

 

b) For  30 lbs....we need    30 * 2.4 =  72 oz of seasoning

 

c)  With 36 oz of seasoning...we can cook      36 / 2.4  =  15 lbs of crawfish

7 0
3 years ago
Jared has 12 more comic books than Zoe. If they have 28 comic books
ZanzabumX [31]

Answer:

20 comic books

Step-by-step explanation:

Let us first <u>set up a variable</u>, x, for the number of books that Zoe has. If Jared has 12 more comics than Zoe, he would have x+12 books.

Given that Zoe and Jared have a total of 28 comic books, let us write an <u>equation</u> and solve for x:

x+x+12=28\\2x+12=28

Now that we have a <u>simplified</u> version of the equation, let us solve for x by <u>isolating the variable</u> on the left side:

2x=28-12\\2x=16\\x=8

We now know that x=8, and also that Jared has x+12 books. To find the number of comic books Jared has, let us <u>add</u> 12 to x:

x+12=\\8+12=\\20\\

Therefore, Jared has 20 comic books.

<em>I hope this helps! Please let me know if you have any further questions :)</em>

4 0
3 years ago
F(x)=x^2+8x-10 find f(a)+5
Papessa [141]

Answer:

We conclude that:

f(a) + 5 = a² + 8a - 5

Step-by-step explanation:

Given

The function is given by

f(x) = x²+8x-10

To determine

f(a)+5

In order to determine f(a)+5, first, we need to determine f(a).

Now substitute x = a in the function f(x) = x²+8x-10

f(a) = (a)² + 8(a) - 10

f(a) = a² + 8a - 10

Thus,

f(a) + 5 = (a² + 8a - 10) + 5

f(a) + 5 = a² + 8a - 5

Therefore, we conclude that:

f(a) + 5 = a² + 8a - 5

4 0
3 years ago
Other questions:
  • PLEASE!!!
    8·1 answer
  • Monique has 2 artificial Christmas trees in her apartment. The taller tree is 1 foot shorter than 5 times the height of the smal
    9·1 answer
  • What is the difference in the areas of a square and rectangle if the rectangle has side lengths 2 less and 2 more than
    7·1 answer
  • Need help please ASAP
    14·1 answer
  • What is the equation of the following line written in general form?
    12·1 answer
  • Solve pls |2c+7|-3&gt;4<br> :(
    15·1 answer
  • Subtract (x² + 5x – 6) – (3x^2 – 7x + 1).<br> What is the difference?
    6·1 answer
  • Here's what Gabriel and Kayla actually wrote.
    10·2 answers
  • Can you help me please
    5·1 answer
  • Find the area of a circle with radius, r = 5.64m.
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!