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
ruslelena [56]
2 years ago
7

Which equation has the solutions x = 1+ V5?

Mathematics
1 answer:
irina1246 [14]2 years ago
3 0

Answer:

x^2-2x-4=0

Δ=2^2-4*1*(-4)

Δ=4+16=20

VΔ=2V5

x1= (2+2V5)/2=1+V5

the answer is D

Step-by-step explanation:

You might be interested in
(x^2 + 5x + 2) – (5x^2 – x – 2) =
zlopas [31]

Answer:

{ \tt{( {x}^{2} + 5x + 2) - (5 {x}^{2} - x - 2)  }} \\  = { \tt{(1 - 5) {x}^{2}  + (5 + 1)x + (2 + 2)}} \\  = { \tt{ - 4 {x}^{2} + 6x + 4 }} \\  = { \tt{ - 2(2 {x}^{2} - 3x - 2) }}

3 0
3 years ago
Read 2 more answers
, list the first five terms of each sequence, and identify them as arithmetic or geometric.
Natali [406]

Answer:

Step-by-step explanation:

A_{n+1}=14*A_{n}

A_{1}=8

A_{1+1}=14×8=112

A_{2}=112

A_{3}=14*A_{2}=14×112=1568

A_{4}=14*A_{3}=14×1568=21952

A_{5}=14*A_{4}=14×21952=307328

7 0
3 years ago
HELP PLEASE !!
mars1129 [50]

Answer:

They don’t

Step-by-step explanation:

They can be the same height but one can be wider than the other

5 0
3 years ago
Plssss hellpppppp meeeeeeeww
Step2247 [10]

Answer:

12

Step-by-step explanation:

When the numerators are the same, the denominator that is bigger has a lesser value. In this case, the inequality > shows that \frac{1}{10} is bigger than the fraction next to it so in order to find a fraction that is lesser in value than  \frac{1}{10}, we need to find a denominator that is <u>more than 10</u>, since 10 is the denominator of the first fraction. The only number more than 10 in the options is 12, so 12 is the answer.

7 0
3 years ago
What is the surface area of a rectangle that is 6, 4, 4?
Alex

Answer:

128 squared feet

Step-by-step explanation:

A=2(wl+hl+hw) is the formula if  you multiply the edges the add then twice because of the 3d shape you get 128.

4 0
3 years ago
Other questions:
  • Denise received 300 votes in election for student council president she was 60% of the students who voted in the election how ma
    5·1 answer
  • Chelsea and Pedro manipulated the rational expression \dfrac{14k^3 + 7k^2}{7k^3 + 14k^2} 7k 3 +14k 2 14k 3 +7k 2 ​ start fractio
    7·1 answer
  • Find the distance between the two points in simplest radical form.<br> (-5,8) and (-3,1)
    15·1 answer
  • 180 is 25% of what number? show ur work
    14·1 answer
  • Which letter labels a vertex?<br> A only<br> B<br> C<br> Аand D
    13·1 answer
  • X(x+7)=4x+10<br> then needs to get the normal form of the equation<br> x= ?, x=?
    10·1 answer
  • Two parallel lines are crossed by a traversal. What is the value of h?
    14·1 answer
  • Add the following expressions: 3r - 7 and -10r + 2<br> -13r-9<br> 13-5<br> O -7r - 9<br> -7r -5
    12·2 answers
  • Giving 30 points pls answer correctly
    11·1 answer
  • Please help with #12 im confused<br> that is the key but i dont get it
    14·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!