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DerKrebs [107]
3 years ago
12

LetFfor a fractional linear map. Letz′i=F(zi) fori= 1,2,3,4. Show that thecross ratio ofz′1, z′2, z′3, z′4is the same as the cro

ss ratio ofz1, z2, z3, z4.
Mathematics
1 answer:
Dovator [93]3 years ago
5 0

Answer:

Just try OK

Step-by-step explanation:

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Find the intersection points using substitution or elimination for each system of equations:
natka813 [3]

Answer:

Step-by-step explanation:

Okay, so I think I know what the equations are, but I might have misinterpreted them because of the syntax- I think when you ask a question you can use the symbols tool to input it in a more clear way, otherwise you can use parentheses and such.

Problem 1:

(x²)/4 +y²= 1

y= x+1

*substitute for y*

Now we have a one-variable equation we can solve-

x²/4 + (x+1)² = 1

x²/4 + (x+1)(x+1)= 1

x²/4 + x²+2x+1= 1

*subtract 1 from both sides to set equal to 0*

x²/4 +x^2+2x=0

x²/4 can also be 1/4 * x²

1/4 * x² +1*x² +2x = 0

*combine like terms*

5/4 * x^2+2x+ 0 =0

now, you can use the quadratic equation to solve for x

a= 5/4

b= 2

c=0

the syntax on this will be rough, but I'll do my best...

x= (-b ± √(b²-4ac))/(2a)

x= (-2 ±√(2²-4*(5/4)*(0))/(2*(5/4))

x= (-2 ±√(4-0))/(2.5)

x= (-2±2)/2.5

x will have 2 answers because of ±

x= 0 or x= 1.6

now plug that back into one of the equations and solve.

y= 0+1 = 1

y= 1.6+1= 2.6

Hopefully this explanation was enough to help you solve problem 2.

Problem 2:

x² + y² -16y +39= 0

y²- x² -9= 0

6 0
3 years ago
Help ME fast and pls
iogann1982 [59]

Answer:

the first one is 8 and 9

the second one is 13 and 14

Step-by-step explanation:

8^2 is equal to the square root of 64 and 9^2 is equal to the square root of 81.

13^2 is equal to the square root of 169 and 14^2 is equal to the square root of 196.

hope this helps and is correct.

5 0
3 years ago
Woodland high school
lesantik [10]
That is correct because it’s a real high school
8 0
3 years ago
Shelby earns $190 per week at her part time job and she spends $15.20 each week eating at the local fast food restaurant. What p
Hoochie [10]
I think the correct answer would be 8%...I'm not for sure. 
5 0
3 years ago
3+11x9-9x11 what is the answer
Rom4ik [11]
Your answer would be 3
8 0
3 years ago
Read 2 more answers
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