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Dima020 [189]
3 years ago
15

Fine the solution of 4x^2+4x+1=0

Mathematics
2 answers:
Natalka [10]3 years ago
7 0

Answer:

x = -1/2

Step-by-step explanation:


Lena [83]3 years ago
7 0

Answer:

x = - \frac{1}{2} with multiplicity 2

Step-by-step explanation:

given 4x² + 4x + 1 = 0

This is a perfect square of the type

(a + b)² = a² + 2ab + b²

4x² = (2x)² ⇒ a = 2x, 1 = 1² ⇒ b = 1, and

2ab = 2 × 2x × 1 = 4x

4x² + 4x + 1 = 0

(2x + 1)² = 0, hence

x = - \frac{1}{2} with multiplicity 2



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Write the equation of a line in slope intercept form that has a slope of 1/5 and contains (-10,6)
VLD [36.1K]

Answer:

y = \frac{1}{5} x + 8

Step-by-step explanation:

The equation of a line in slope- intercept form is

y = mx + c ( m is the slope and c the y- intercept )

here m = \frac{1}{5}, hence

y = \frac{1}{5} x + c ← is the partial equation

To find c substitute (- 10, 6) into the partial equation

6 = - 2 + c ⇒ c = 6 + 2 = 8

y = \frac{1}{5} x + 8

5 0
3 years ago
If the area of a wall is 36 square meters, what is the perimeter?​
JulsSmile [24]

Answer:

18

Step-by-step explanation:

it is 18 because you would 36 divided by 4 to get 9. Then you would do 9 plus 6 to get the answer 18

4 0
2 years ago
Read 2 more answers
Solve for x and y. 3x+8y=20. 5x+3y=23
GrogVix [38]

Answer:

x=4 and y=1

Step-by-step explanation:

Equation 1) 3x+8y=20  

Equation 2) 5x+3y=23

Equation 1) 5(3x+8y=20 )  

Equation 2) 3(5x+3y=23)

15x+40y=100

15x+9y=69

(Take away 40y from 9y and 100 from 69)

31y = 31

y=1

Substitute y=1 into equation 1)

3x+8=20

(Take away 8 from both sides)

3x=12

(Divide by 3)

x=4

6 0
3 years ago
Read 2 more answers
NEED HELP FAST PLEASE<br> Evaluate the limit.<br><br> a.4<br> c.1<br> b.2<br> d.limit does not exist
BlackZzzverrR [31]
We have the following limit:
 (8n2 + 5n + 2) / (3 + 2n)
 Evaluating for n = inf we have:
 (8 (inf) 2 + 5 (inf) + 2) / (3 + 2 (inf))
 (inf) / (inf)
 We observe that we have an indetermination, which we must resolve.
 Applying L'hopital we have:
 (8n2 + 5n + 2) '/ (3 + 2n)'
 (16n + 5) / (2)
 Evaluating again for n = inf:
 (16 (inf) + 5) / (2) = inf
 Therefore, the limit tends to infinity.
 Answer:
 
d.limit does not exist
7 0
3 years ago
Jennifer went to the post office for stamps. She bought the same number of 8-cent stamps and 10-cent stamps. She also bought as
mamaluj [8]
Write it out as a set of equation:
Let x be number of 8 cent stamps, y be 10 cent stamps, and z be 2 cent stamps.
x=y
z=x+y
8x+10y+2z=440
Lets first solve for x:
from x=y and z=2x(from first equation) the last equation is
8x+10x+4x=440
22x=440
x=20
know that x=20, you also know that y=20 as well, since z=x+y, z=40.
So 20 8-cent stamps, 20 10-cent stamps, and 40 2-cent stamps.
5 0
4 years ago
Read 2 more answers
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