Solve the quadratic equation:
X? + 7x+10=0
x= -10, 7
X= 5, 2
x= -4,-1
X=-5, -2
help?

Answers

Answer 1

Answer:

           The last x=-5 or x=-2

Step-by-step explanation:

[tex]x^2+7x+10=0\qquad\implies\quad a=1\,,\ b=7\,,\ c=10\\\\\\x=\dfrac{-b\pm\sqrt{b^2-4ac}}{2a}=\dfrac{-7\pm\sqrt{7^2-4(1)(10)}}{2(1)}=\dfrac{-7\pm\sqrt{49-40}}{2}=\dfrac{-7\pm\sqrt9}{2}\\\\ x_1=\dfrac{-7+3}2=\dfrac{-4}2=-2\,,\qquad x_1=\dfrac{-7-3}2=\dfrac{-10}2=-5[/tex]


Related Questions

A container has 200 liters and is losing 6 liters per minute. How many will it have after 10 minutes

Answers

Answer:

140 liters will remain after 10 mins

Step-by-step explanation:

The easy way is just multiply the amount lost per min by the number of mins.

140 liters will be left after 10 minutes
Explanation:
6 liters x 10 minutes = 60 liters will be lost after 10 minutes
200 liters - 60 liters = 140 liters left after 10 minutes

Jin adds 1 gallon of a water-and-bleach mixture that is 4% bleach to 2 gallons of a
water-and-bleach mixture that is 10% bleach. What percent of the final mixture is bleach?

Answers

Answer:

14%

Step-by-step explanation:

1 gallon + 2 gallons = 3 gallons

1/3 of this is 4% bleach, while 2/3 is 10% bleach, together 3/3 is 14% bleach.

i need help fast fast

Answers

Answer:

D. Mountains

Step-by-step explanation:

When two Continental plates crash the land piles upward to forms mountains and hills.

Answer:

Step-by-step explanation:

I D KK

1 over 2 rational or irational

Answers

Answer:

Rational

Step-by-step explanation:

I hope this helped!

Answer:

the answer is rational

please help me i’m struggling so much with this

Answers

00000031 is the answer of your question.

Write a compound inequality whose solution consits of { -6, -5,-4,-3,-2,-1,0,1,2}

Answers

Answer:

[tex]-6\leq x \leq 2[/tex]

Step-by-step explanation:

The simplest one is

[tex]-6\leq x\leq 2\\\\x\in N[/tex]

if you want a more complex one you will eventually get the simple

ivy bought 10 packs of cups for her holiday party. a pack of medium cups costs $1.80 and a pack of large cups costs $2.40. she paid a total of $21.60. how many packs of each size cup did she buy?

Answers

Hope this helps!
I just did this right now and this is the correct way.

A cup slides off a 1.1\,\text m1.1m1, point, 1, start text, m, end text high table with a speed of 1.3\,\dfrac{\text m}{\text s}1.3
s
m

1, point, 3, start fraction, start text, m, end text, divided by, start text, s, end text, end fraction to the right. We can ignore air resistance.
What was the cup's horizontal displacement during the fall?

Answers

Answer:

0.616m

Step-by-step explanation:

At the store the ratio of books sold to movies was 5:7 for every___ movies sold there were ____ books sold

Answers

for every 7 movies sold there were 5 books sold

Based on this definition, which sentence is the best use of the word contemplative'??
O We watched the contemplative television show before heading to bed for the night
O Her contemplative speech was rather unfocused
O We were not very contemplative about the unfamiliar subject
O He was seated in a contemplative pose in the quiet library​

Answers

Answer:

look thoughtfully for a long time at.

Step-by-step explanation:We watched the contemplative television show before heading to bed for the night

The temperature on Monday was 14 degree Celsius. On Tuesday the temperature decreased by 5 degree. On Wednesday, the temperature decreased another 10 degree. On Thursday the temperature increased by 8 degrees. What was the temperature at the end of the day on Thursday?

Answers

Answer:

7 degrees

Step-by-step explanation:

The temperature in Monday was 14 degrees

On tuesday the temperature decreased by 5 degrees

On Wednesday it decreased by 10 degrees

On thursday the temperature increased by 8 degrees

Therefore the temperature at the end of the day on Thursday can be calculated as follows

= 14 - 5 - 10 + 8

= 7

Hence the temperature at the end of the day on Thursday is 7 degrees

Carbohydrates are like identification badges. Cells that have different membrane carbohydrates do different ________________. The immune system uses the carbohydrates to _____________________ that your cells belong to ________ and are not ______________________, ____________________, or other foreign cells.

Answers

We have that for the Question, it can be said that

Carbohydrates are like identification badges. Cells that have different membrane carbohydrates do different Duties The immune system uses the carbohydrates to detect that your cells belong to you as living and are not  foreign organism or other foreign cells.

From the question we are told

Carbohydrates are like identification badges. Cells that have different membrane carbohydrates do different ________________. The immune system uses the carbohydrates to _____________________ that your cells belong to ________ and are not ______________________, ____________________, or other foreign cells.

Generally

Carbohydrates  performs different functions in the body as it provides energy stores energy and so much moreCarbohydrates  performs a unique function to the immune systems as it is used as deduction mechanism.The immune system makes use of ones carbohydrates to identify its cellsAs the body may be exposed to some foreign bodies.And the cells may need to be told apart.

Therefore

The complete statement will be

Carbohydrates are like identification badges. Cells that have different membrane carbohydrates do different Duties The immune system uses the carbohydrates to detect that your cells belong to you as living and are not  foreign organism or other foreign cells.

For more information on this visit

https://brainly.com/question/1641336  

7 1/2÷(4 1/2- 5 1/8) =​

Answers

i think the answer is -12

Answer:

-12

Step-by-step explanation:

PLEASE HELP ME WITH THIS PROBLEM 20 POINTS!

Answers

Answer:

1. interior angles

2. complementary angles

3. supplementary

4. supplementary

5. Alternate interior angles

6. supplementary

7. supplementary

Step-by-step explanation:

HOPE THIS HELP DA!!!!!!!

a performer excepts to sell 5,000 tickets for an upcoming concert. They want to make a total of $311,000 in sales from these tickets.

how much well they make if they sell 7,000 tickets ?

Answers

The answer is 435,400
Explanation :
If 5000 tickets = 311,000
And 7000 tickets = x
Cross multiplication method
Then x = 7000 *311,000 / 5000
X= 435,400

Wayne charges the following for repairing washing machines:
£28 call-out charge + £16 for each half-hour he spends on the repair
What will the total cost be for a repair which takes one and a half hours?

Answers

Answer:

The total cost will be £76

Step-by-step explanation:

28+16(x)=total cost

28+16(3)=t

28+48=t

76=t

What is the expression in factored form?
x^2-6x+8

Answers

Answer:

coefficient of the x-term, that is - 6

the factors of + 8 which sum to - 6 are - 4 and - 2

x

2

6

x

+

8

=

(

x

4

)

(

x

2

)

Step-by-step explanation:

Answer:

there

Step-by-step explanation:

tandard form:

x2 − 6x + 8 = 0

Factorization:

(x − 2)(x − 4) = 0

Solutions based on factorization:

x − 2 = 0   ⇒   x1 = 2

x − 4 = 0   ⇒   x2 = 4

Extrema:

Min = (3, −1)

Below is the table of values of a function. Write the output when the input is n .
Input: 4,5,8,n
Output:16,20,32

Answers

9514 1404 393

Answer:

  4n

Step-by-step explanation:

We observe that each output is 4 times the corresponding input. Then 4 times n will be ...

  Input: n

  Output: 4n

PLEASE HELP!? Show all work to multiply (6+√-64)(3-√-16) IM SO CONFUSED.

Answers

Answer:

50

Step-by-step explanation:

find x and measure ABC
pls help I’ve been trying this for 30 minutes.
Geometry

Answers

[tex](2x - 9) + (3x - 6) = 110[/tex]

[tex]2x + 3x - 9 - 6 = 110[/tex]

[tex]5x - 15 = 110[/tex]

Plus sides 15

[tex]5x - 15 + 15 = 110 + 15[/tex]

[tex]5x = 125[/tex]

Divided sides by 5

[tex] \frac{5}{5}x = \frac{125}{5} \\ [/tex]

[tex]x = 25[/tex]

Thus ;

A = 2 ( 25 ) - 9°

A = 50° - 9°

A = 41°

_________________________________

B = 3 ( 25 ) - 6

B = 75° - 6°

B = 69°

_________________________________

C + 110° = 180°

because it is a straight line.

Subtract sides 110°

C + 110° - 110° = 180° - 110°

C = 70°

_________________________________

And we're done.....♥️♥️♥️♥️♥️

what is 3.50 divied by 12

Answers

Answer:

0.29

Step-by-step explanation:

PLEASE HELP IF YOU CANNN

Answers

Answer:

x=9

Step-by-step explanation:

First, midpoint means “the middle” so that mean that segment AB is half of AC. You can make an equation: 5x+18=4.5+6.5x. After that, you have to move the numbers on one side and the variables on the other.

You then come up with 13.5=1.5x

Divide both of them by 1.5 and then you get x=9

Answer:

X=9

Step-by-step explanation:

Okay first Hello! :)

so, B is the mid point of the segment midpoint means the half way

so, if AB= 5x+18 is the half to get the whole you would need to times it by 2

you get 10x+36

so now you equal them together

10x+36= 13x +9

Always move your smaller x, and now you got

3x+9=36

move your 9 over and switch the sign you get

3x=27

divide by three and you get

X=9

Which linear equation is represented by the table?

Answers

Answer:

On E. the first answer is = -2.5x-15 and the solution is (-6,0)

Step-by-step explanation:

I just guessed this on E. and got it right.

what is the measure for the following angle?
AOC​

Answers

Answer:

40 degrees

cuz 40+40=80

help me I dont understand this question ​

Answers

Angle 1 & Angle 2 are ADJACENT ANGLES as they are both next to each other.

Solve for x: (1 point)

-9/8, * x - 7=-25

Answers

Answer: x=16

Step-by-step explanation: Rearrange the equation by subtracting what is to the right of the equal sign from both sides of the equation :

                    -9/8*x-7-(-25)=0

simplify 9/8

((0 -  (9/8 • x)) -  7) -  -25  = 0

 Subtracting a whole from a fraction

Rewrite the whole as a fraction using  8  as the denominator

7 = 7/1 = 7*8/8

Equivalent fraction : The fraction thus generated looks different but has the same value as the whole

Common denominator : The equivalent fraction and the other fraction involved in the calculation share the same denominator

  -9x - 56  =   -1 • (9x + 56)

   Adding up the two equivalent fractions

(-9x-56) - (-25 • 8)/8     144 - 9x/8

  144 - 9x  =   -9 • (x - 16)

When a fraction equals zero ...

Where a fraction equals zero, its numerator, the part which is above the fraction line, must equal zero.

Now,to get rid of the denominator, multiply both sides of the equation by the denominator.

Here's how:

 -9•(x-16)/8 • 8 = 0 • 8

         

Now, on the left hand side, the  8  cancels out the denominator, while, on the right hand side, zero times anything is still zero.

The equation now takes the shape :

  -9  •  (x-16)  = 0

   Solve  :    x-16 = 0  

Add  16  to both sides of the equation :  

                     x = 16

Answer: x=16

Step-by-step explanation: Rearrange the equation by subtracting what is to the right of the equal sign from both sides of the equation :

                   -9/8*x-7-(-25)=0

simplify 9/8

((0 -  (9/8 • x)) -  7) -  -25  = 0

Subtracting a whole from a fraction

Rewrite the whole as a fraction using  8  as the denominator

7 = 7/1 = 7*8/8

Equivalent fraction : The fraction thus generated looks different but has the same value as the whole

Common denominator : The equivalent fraction and the other fraction involved in the calculation share the same denominator

 -9x - 56  =   -1 • (9x + 56)

  Adding up the two equivalent fractions

(-9x-56) - (-25 • 8)/8     144 - 9x/8

 144 - 9x  =   -9 • (x - 16)

When a fraction equals zero ...

Where a fraction equals zero, its numerator, the part which is above the fraction line, must equal zero.

Now,to get rid of the denominator, multiply both sides of the equation by the denominator.

Here's how:

-9•(x-16)/8 • 8 = 0 • 8

         

Now, on the left hand side, the  8  cancels out the denominator, while, on the right hand side, zero times anything is still zero.

The equation now takes the shape :

 -9  •  (x-16)  = 0

  Solve  :    x-16 = 0  

Add  16  to both sides of the equation :  

                    x = 16

8 m
5 m
22 m
8 m
5 m
12 m
What is the volume of the figure? Enter the answer in the box.
cubic meters

Answers

Answer:

1,280 cubic meters

Step-by-step explanation:

Length x Width x Height = Volume

The box on the left:

8m x 5m x 22m = 800[tex]m^{3}[/tex]

Box on the right:

12m x 5m x 8m = 480[tex]m^{3}[/tex]

Add them:

800[tex]m^{3}[/tex] + 480[tex]m^{3}[/tex] = 1,280[tex]m^{3}[/tex]

The volume of the figure is 1,280 cubic meters

help thanks
If you troll u get banned

Answers

Answer:

i believe it is d as the angle could also be a right angle

Step-by-step explanation:

Answer:

Your mom :))))))

It cost $12 to attend a golf clinic with a local pro. Buckets of balls for practice during the clinic cat $6 each

Answers

Answer:

$30 but the number depends on the bucket of balls used

Step-by-step explanation:

$12 + $6b =

$12 + $6(3) =$30

b= bucket of balls

I used 3 bucket of balls for this clinic

A city starts with a population of 200,000 people in
2005. The population has been declining according to
the equation
P(t) = 200,000e-.08
where P is the population t years later. Approximately
when will the population be half the initial amount?

Answers

Answer:

200,000 and 2005 which cant theoretically be done be P(t) which would increase in the population which would most likely be from 2005 to 2020. so you cannot do this because imagine it as X=(Y)x the mass of population which would be defined as (P) which will also be represented as a probable and physical change in the number. but not only the number, but the population. being have of the initial amount which you will take the variable (P) and have the exact amount which would be the population. Which would theoretically recon as a positive ID of the population.-Cj

Step-by-step explanation:

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