[tex]x^{2} +2x=-1[/tex]
how do i solve this with the pq- formula?

Answers

Answer 1

Step-by-step explanation:

x²+2x+1

x²+x+x+1

x(x+1)1(x+1).

(x+1)(x+1)

x=-1. , x=-1

Answer 2

Answer:

[tex]\displaystyle \boxed{\text{\sf \Large x=-1}}[/tex]

Step-by-step explanation:

Add 1 to both sides

[tex]x^2+2x+1=0[/tex]

Use quadratic formula with a=1, b=2, c=1

[tex]\displaystyle x=\frac{-b \pm \sqrt{b^2-4ac} }{2a}[/tex]

[tex]\displaystyle x= \frac{-(2) \pm \sqrt{(2)^2-4(1)(1)} }{2(1)}=-1[/tex]


Related Questions

What is the difference of
7
8

1
3
?

A.
7
+
1
8
+
3
=
8
11
B.
7

1
8

3
=
6
5
C.
7
×
1
8
×
3
=
7
24
D.
(
7
8
×
3
3
)

(
1
3
×
8
8
)
=
21
24

8
24
=
13
24

Answers

Answer:

Step-by-step explanation:

the difference is 56 because if you add and divide them by 3 and -2 you will get 56

12: 5 is equivalent to?

Answers

24: 10

12: 5 is equivalent to 24: 10

The ratio of rainbow trout to mackinaw released into a lake was 4:7. A total of 682 fish were released. How many were mackinaw?

Answers

Answer:

There are 450 trout in the lake.

B - brown trout;

R - rainbow trout.

B : R = 6 : 9 = 2 : 3

B = 2 t

R = 3 t

2 t + 3 t = 5 t

5 t = 450

t = 450 : 5

t = 90

R = 3 * 90 = 270

Answer:

There are 270 rainbow trout in the lake.

Step-by-step explanation:

are of parallelogram
base= 11.4
height = 8.9

Answers

Answer:

area o parallelogram =base ×height

area of parallelogram =11.4×8.9

area of parallelogram =101.46

Answer:

101.46

Step-by-step explanation:

11.4 * 8.9= 101.46

B*H= area

You are having a movie marathon. Each movie lasts about 12 hours.
If you want to watch 4 movies, how long will your movie marathon last?

Answers

Answer:

Your movie marathon will last 6 hours.

Step-by-step explanation:

This question can be solved using a rule of three.

Each movie lasts  hours. How much do 4 movies last?

So

1 movie - 1.5 hours

4 movies - x hours

x = 4*1.5 = 6

Your movie marathon will last 6 hours.

Answer:

48 hours or 2 days

Step-by-step explanation:

There are 4 movies

Each movie lasts 12 hours

4 x 12 or 12 x 4 equals 48

The marathon lasts 48 hours

1. Sen 495° debo o sea evaluarlas las funciones trigonométricas para ángulos que no se encuentra en círculos unitarios y me pide explicar y desmontar ​

Answers

Answer:

which language is this???

Evaluate (y - 9) + (3 + x), when y = 15 and x = 5​

Answers

Answer:

14

Step-by-step explanation:

It says 'Evaluate (y - 9) + (3 + x), when y = 15 and x = 5​'.

So we'd put 15 in y's place. It'll look like this (15 - 9).

Then we'd put 5 in x's place. It'll look like this (3 + 5).

You subtract (15 - 9) which equals 6. And you'd add (3 +5) which equals 8. You add 6 + 8 together since those are your answer for the parentheses. Your final should be 14. Hopefully this helped!


pls help this is due soon pls pls

Answers

Answer:

1500

Step-by-step explanation:

All you have to do is multiple the powers together!! 15x100=1500

Which step will get you closest to the solution of this equation?

5⋅(x−2)=7

Answers

when you divide both sides by 5

if sixth of a number equals 25 percent of 12 what is the number

Answers

Answer:

the number is 18

Step-by-step explanation:

25% of 12 is 3

1*x/6*1

x is the unknown number

x/6=3

6*3=x

x=18

What is a 75/25 mortgage?
A. A mortgage with 7.5% an 2.5% interest rate
B. A breakdown of principal to interest in traditional mortgages
C. A type of piggyback mortgage
D. A type of refinance plan

Answers

Answer:

c. A type of piggyback mortgage

A type of piggyback mortgage

HELP I have hard homework

Answers

9514 1404 393

Answer:

  b.  55°

Step-by-step explanation:

Complementary angles have a sum of 90°.

  ∠ABC +∠CBD = 90° . . . . . . the given relation

  ∠ABC + 35° = 90° . . . . . . . . . substitute the given value

  ∠ABC = 55° . . . . . . . . . . . . . . subtract 35° from both sides

  ∠ABC = ∠EBF = 55° . . . . . . vertical angles are congruent

HELP PLEASE ! Write an equation of a line that passes through the point (4, 3) and is perpendicular to the graph of the equation y= -1/3x+4

Answers

Answer:

y = 3x - 9

Step-by-step explanation:

✔️Find the slope of the line perpendicular to the given graph of equation:

A line that is perpendicular to the graph of the equation y = -⅓x + 4, will have a slope value that is the negative reciprocal of the slope of the graph of the given equation.

The slope of y = -⅓x + 4 is -⅓.

Negative reciprocal of -⅓ = 3

Slope of the line (m) = 3

✔️Find the y-intercept (b):

Substitute (x, y) = (4, 3) and m = 3 into y = mx + b

3 = 3(4) + b

3 = 12 + b

3 - 12 = b

-9 = b

b = -9

✔️Write the equation:

Substitute m = 3 and b = -9 into y = mx + b

y = 3x + (-9)

y = 3x - 9

46. MULTI-STEP A flying disk has a radius of 4.9 inches. Jolanda discovers that adding a hole with a radius of 3.75 inches to the center of the disk reduces the weight of the disk, so it travels farther. Jolanda wants to experiment with the size of the disk to increase flying distance. In the new disks she creates, the sizes of the disks and holes are increased on decreased by the same amount. a. Write an expression for the area of the top of the new flying disks. b. Explain your solution process. ​

Answers

Answer:

jdnckrbekspqhdjgkck,bwmwldbcbxnlwlwwnckv

A surfboard that has a regular price of $150 is on sale at a 40% discount. What is the sale price with a 9% tax?

Answers

Answer:

$98.10

Step-by-step explanation:

150 decrease 40% =

150 × (1 - 40%) = 150 × (1 - 0.4) = 90

90 increase 9% =

90 × (1 + 9%) = 90 × (1 + 0.09) = 98.1

PLEASEEEEEEE HELPPPPPPPPP, I WILL GIVE BRAINLIEST :))

The table below represents the displacement of a horse from its barn as a function of time:

Time Displacement
0 8
1 58
2 108
3 158
4 208

What would be the domain of the function if the horse continued to walk at this rate until it traveled 508 feet from the barn?

Answers

11 is the answer I got

on a family trip, albert counted two groups of four motorcycles and an additional five solo motorcycles. Write an expression for the number of motorcycles albert saw. then find the number of motorcycles.

Answers

2(4)+5 Albert encountered 13 motorcycles.

Write the number 3.1 x 104 in standard form.

Answers

the answer is 31,000
move the decimal 4 spaces to the right

Brandon has $50 in his savings account. He plans to deposit $20 into his savings account each month. Which expression could be used to find the amount of money Brandon will have in his savings account after x months of making deposits?

a
20x - 50
b
20x + 50
c
20 + 50x
d
20 + 50 + x

Answers

B. 20x+50.
20$ is the reoccurring payment so it’s gets the x.

Nina is buying a new petfish At the pet store, Gre fish tank has an equal tumber of two kinds of fish tetras and guppies. Each kind of fish comes in
four different colors, yellow, orange, bluse, and silver. There are an equal number of each color of fish in the tank
Blue
Silser
Tetra
Yellow
YT
YG
Orange
CT-
OG -
Different Types Of Tetra
BT-
BC
STA
SG
Gupy
Question
Response
If Nina scoops out a fish at random, what is the probability
that she will scoop out a silver tetra? Show how you decided.
What do the fractions in the table represent
What is the area of the entire table add up the fractions)

Answers

Answer:

Step-by-step explanation: CT-4 OG-6

Please help ASAP Explanation is appreciated!

Answers

Answer:

x=20, y=100

Step-by-step explanation:

3x+2x=7x-40

5x=7x-40

2x=40

x=20

7x-40=y

140-40=y

100=y

y=100

According to the exterior angle theorem, the two remote interior angles are equal to the exterior angle. This is why we set 3x+2x equal to 7x-40.

According to the vertical angles theorem, two angles that are opposite and formed by two intersecting straight lines are equal. This is why we set 7x-40 equal to y.

Because we already knew that x was 20, we could put it into our equation. (7*20)-40=y.

Hope this helped! :D

Identify the function shown in this graph. lol I need help

Answers

Answer:

y = -3x - 2

Step-by-step explanation:

It's hard to explain in txt lol

Fill in the blank.

In a parallelogram, diagonals ____.

a. are perpendicular
b. are congruent
c. bisect each other
d. are parallel

Answers

Answer:

c. bisect each other

Step-by-step explanation:

In a parallelogram, diagonals bisect each other.

Answer:

C. Bisect each other

Step-by-step explanation:

A parallelogram is a quadrilateral whose opposite sides are parallel. The opposite angles of a parallelogram are equal. The opposite sides of a parallelogram are equal. The diagonals of a parallelogram bisect each other.

I need help with this geometry question

Answers

Step-by-step explanation:

m<2= 180-90-41= 49°

m<4=90°

m<5=41

m<9=36°

need help for geoooooooooo

Answers

Solution with steps :

Given :

△AFB≅△DEC

Since triangle AFB is congruent to triangle DEC their corresponding parts will be equal.

Which means :

m∠AFB = 37°m∠ABF = 90°

Sum of all angles of a triangle = 180°

Measure of ∠CDE :

[tex] = \tt180 - 37 + 90[/tex]

[tex] = \tt180 - 127[/tex]

[tex] = \tt53[/tex]

Thus, the measure of angle CDE = 53°Then, the measure of angle BAF = 53°

Therefore, m∠A = 53°

My answer :

[tex]\hookrightarrow\boxed{\color{plum}\bold {\tt \: \bold{m∠A = 53°}}}[/tex]

A line with -2 and y intercept of 4

Answers

Answer:

The equation of the straight line y = -2x +4

Step-by-step explanation:

Explanation:-

Given that the slope of the line   m=-2

Given that  y-intercept c=4

The equation of the straight line

slope -intercept form  y =mx +c

The equation of the straight line y = -2x +4

Please help with this and don't put the wrong answer please. 30 points.

Answers

Answer:

The answer is A

Step-by-step explanation:

eight less than six times time a number is 56

Answers

Answer:

6 x X = 56 - 8

Step-by-step explanation:

X is a variable btw

In a certain year, a magnitude 7.8 earthquake struck California. In another year, a magnitude 5.8 quake struck Kansas. How many times as intense as the Kansas quake was the California quake?

Answers

Answer:

The California quake was 1.34 times as intense as the Kansas quake.

Step-by-step explanation:

To find how many times as intense as Kansas (K) quake was the California (C) quake first, we need to find the ratio of intensity (I) between those earthquakes:

[tex] \frac{I_{C}}{I_{K}} = \frac{7.8}{5.8} = 1.34 [/tex]

Now, by multiplying the above number for the intensity of the Kansas quake we should have the intensity of the California quake:

[tex] I_{K} = 1.34*5.8 = 7.8 [/tex]

Therefore, the California quake was 1.34 times as intense as the Kansas quake.

I hope it helps you!                            

Solve for x. What is the value of

Pls help me

Answers

Answer

x = 21

HOS = 68

Explanation

The arrows beside x point to 12 and 6, which is a straight angle. Straight angles always add up to 180 degrees.

So that means 3x+5 plus 5x+7 must equal 180 degrees.

3x+5+5x+7 = 180

Combine like terms.

8x+12 = 180

Subtract 12 from both sides.

8x = 168

x = 21

But BE CAREFUL.

The problem is asking for the angle HOS.

To do this, just substitute what you got for x into the expression.

3(21)+5 = 68

The value of HOS is 68 degrees.

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