3. Solve by completing the square.
x^2+8x-9=0​
The solutions are x =

Answers

Answer 1

Answer:

is it like exponets

Step-by-step explanation:

Answer 2
Step 1: Factor left side of equation.
(x - 1)(x + 9) = 0

Step 2: Set factors equal to 0.
x-1=0 or x+9=0
x = 1 or x = -9

The solutions are x = 1 or x = -9

Related Questions

Lori had $126.89 in her bank account. She deposited $21.49 into it and then wrote a check for her car repairs for $156.61. What was the ending balance in her account?
–$51.21
–$8.23
$8.23
$51.21

Answers

Answer:

hi here is your answerr!

Step-by-step explanation:

Lori had $126.89 in her bank account.

She deposited $21.49 into it and then wrote a check for her car repairs for $156.61  

126.89+ 21.49=148.38

148.38-156.61=−8.23

she owes the bank $8.23

Answer:

$105.49

Step-by-step explanation:

126.89-$21.49

= $105.49

what is 2+2(2)^2-3 ?????????

Answers

Answer: 7

Step-by-step explanation: All you do is simplify it so. 2+2(22)−3

=2+(2)(4)−3

=2+8−3

=10−3

=7

Answer:

7 or 3

Step-by-step explanation:

its 7 if the -3 isnt minus 3 isnt with the ^2

its 3 if it is with the ^2

PLEASE HELP QUICKLY!!

Answers

Answer:

79

Step-by-step explanation:

Sense all the lines are straight, and will never cross, then adjacent angles must always add up to 180 degrees. 3 and 4 are adjacent. Thus they must add up to 180. So set up as 101 + x = 180. x=180 - 101, and find that x = 79. Plug x back into check. 101 + 79 = 180. and 180= 180. The answer is 79 degrees.

m4 = 79 because 180 - 101 = 79

30pts! im currently in the middle of taking the test :(
Rationalize the denominator of square root of negative 16 over open parentheses 1 plus i close parentheses plus open parentheses 6 plus 3 i . (6 points)

√-16

________

(1+i)+(6+3i)

Answers

Answer:

16 /65  +  28 i /65

Step-by-step explanation:

Answer:

16+28i over 65

Step-by-step explanation:

toot the test

oh god does anyone understand this? I need help it’s for a test and I wanna do good!!

Answers

Answer:

A

Step-by-step explanation:

Its a right angle, so you have to use trigonometry.

To find x , you use sin60° = opposite/hypotenuse

opposite = x and hypotenuse = 5 . So,

sin60°= x/ 5

5sin60° = x

put the value into your calculator you ' ll get:

[tex] x = \frac{5 \sqrt{3} }{2} [/tex]

To find y, cos60°= adjacent/hypotenuse

adjacent= y and hypotenuse = 5. So,

cos60°= y/5

5cos60°=y

[tex]y = \frac{5}{2} [/tex]

Hope I was able to help. Good luck!<3

wHaTs Ur FaV tYlEr ThE cReAtOr SoNg? DoNt RePoRt Me BuT mY fAv SoNg iS eArFqUaKe :P

Answers

Answer:

so u jus gon bring me a birthday gift on my birthday to my birthday party on my birthday wit a birthday gift ?

Step-by-step explanation:

Answer:

Uh

Step-by-step explanation:

I dont know any of his songs

A farm has chickens and cows. All the cows have 4 legs and all the chickens have 2 legs.
All together, there are 82 cow and chicken legs on the farm.
If there are 35 chickens, how many cows are there?

Answers

Answer: 47 cows


hope I helped

Answer:

42

Step-by-step explanation:

a rhino can run at speeds at about 28 miles per hour, what is that number in feet per second, to the nearest whole number?

Answers

Answer:

41.066666666 feet per second

Step-by-step explanation:

Answer:

41 feet per second

Step-by-step explanation:

Mary bought more than 72 pencils to distribute to children at an orphanage. She packs these pencils in gift boxes.

If she packs 4 pencils each into x gift boxes, the inequality that represents this situation is
.

The simplified form of the inequality is

Answers

Answer:

4x≥=72

Step-by-step explanation:

1. Particularly, we have:

Given:

X: number of gift boxes

2. We then have to write the inequation that models the problem:

"Mary bought more than 72 pencils"

"She packs 4 pencils each into x gift boxes"

Finally we have:

4x≥=72, for the inequality that represent this situation.

When Simplfying (simplified form):

= x≥72/4

= x≥18

Answer:

 

4x > 72  

x > 18  

Step-by-step explanation:

Can someone pls factor the trinomial
I will mark you as brainliest

Answers

I just took a picture of the answer.

I hope it was helpful!

Please help with this

Answers

Answer:

[tex]f(x) = 100(1.05)^t[/tex]

After you withdraw $35 from your checking account, the new balance is $260. Which equation shows the equation that could be used to find the balance on your account before the withdrawal?​

Answers

I think that it’s $260+$35=$295


Which expression is equivalent to 8x + 14 +9x - 5?
26x
36x
17x + 9
17x + 19

Answers

Answer:

36x

Step-by-step explanation:

You add the two common numbers and go from there

AA'B'C'is a reflection of AABC over the y-axis. What is the length of A'C'?

Answers

Answer:

(A). 6 units

Step-by-step explanation:

Answer:

A

Step-by-step explanation:

what is divison
anyone know?
tel me

Answers

Answer:

Division Means Divide

Step-by-step explanation:

10÷5

5×2 = 10

2. Tanya is 15 years older than Sarah. In 3 years, the sum of their ages will be 41.
a) Write an expression for Tanya's age in terms of Sarah's age. Use S to represent Sarah's
current age
b) Write an expression for how old Tanya will be in 3 years, using the expression you wrote
for her age
c) Write an expression for how old Sarah will be in 3 years, using S to represent Sarah's
current age.
d) Write an equation that shows the sum of their future ages will be 42
e) Solve that equation to find Sarah's current age
f) What is Tanya's current age?

Answers

The correct answer is c
Hope this help.

Evaluate (3.2) to the second power.

Answers

Answer: 36

Step-by-step explanation: Did the quiz and got 100 :)

Francis is saving money for a new kindle. she needs to save at least $200 to pay for it and has decided to save $25 per week from babysitting. how many weeks will it be before she can purchase the new kindle. show work please

Answers

Answer:

8 weeks

Step-by-step explanation:

to solve divide the total cost of kindle by the money she saves each week.

200÷25 is 8.

and to check you can multiply 25 x 8

The Area. is __ square units.​

Answers

Answer:

The area is 36 square units.

Step-by-step explanation:

Answer: 38

Step-by-step explanation:

11.11 Go math 5th grade pages 510A 510B.

Answers

? post the problems pls!

The student council is organizing a school fair. Council members are making signs to show the prices for admission and for each game a person can play. If the school admission is $2 and the price per game is 25 cents, Let x represent the number of games. Which expression can you use to determine the total amount (in dollars) a person pays for admission and playing x games?

Answers

Answer:

$2 + 0.25x

Step-by-step explanation:

The expression would be

Let us assume the x be the number of games

And the school admission is $2 plus the price of game is 25 cents

So, based on the above information

The expression to determine the total amount is

= $2 + 0.25x

what is the unknown angle of a polygon with other angles 85 degrees and 65 degress , first correct answer will become the brainleyest

Answers

Answer: 30 degrees

Step-by-step explanation:

Assuming this is a three sided polygon, this would make it a triangle. Interior angles of a triangle sum to 180 degrees. 85+65+u=180

150 + u = 180

U = 30 degrees

Mrs. Wu uses a 25% off coupon to buy 1 adult ticket and 1 child ticket to a movie. She pays a total amount of $9.00. A child ticket without the coupon costs $4.00. Write an equation that can be used to find the cost of an adult ticket, x, without the coupon.

Answers

(x/75x100)-4
12-4=8 (if the final answer was needed)

Not the answer:

I have no idea, also when I tried the first answer... it said it was wrong...

Program:

the program was hmh

If x = 10, which equation is true?
A 19 = 2(0.5 - x)
B -28.5 = 3(0.5 - x)
C 3 = 2(x - 0.5)
D 33 = 3x - 3

Answers

I need help with my geometry do you mind helping me??

Answer:

A

Step-by-step explanation:

A) 19 = 2(9.5)

    19 = 19

5. The spinner is spun once, and the coin is flipped once. Which answer
choice has all the possible outcomes? Spinner (1, 2, 3, 4); Coin (H, T)*
A 1H, 1T, 2T, 3H, 3H, 4H, 4T
B 1H, 1T, 2H, 2T, 3H, 3T, 4H, 4T
C 1H, 1T, 2H, 2T, 4H, 4T, 5H,
D 1, 2, 3, 4, H, T

Answers

The answer to this question is B, do 4*2=8, only one answer has 8 outcomes

Answer:

The answer is B

Step-by-step explanation:

Hope it helps

Please give me the brainliest please!!! :[ I've never gotten one before.

find the value of x and please show how

Answers

Answer:

x = 12°

Step-by-step explanation:

The sum of angles in a triangle is 180°.

So,

39° + 53° + 4° + 7x = 180°

Add all the numbers on the left up.

96° + 7x = 180°

Subtract 96 from both sides.

7x = 84°

x = 12°

Hope this helps!

Answer: x= 12

Step-by-step explanation:

Triangle angle sum theorem says that the interior angles of a triangle sum to 180 degrees. Set the sum of all of these angles equal to 180 to solve. 39+53+ (4+7x) = 180. Combine like terms. 96 +7x = 180. Subtract 96 from both sides. 7x = 84. Divide both sides by 7. X = 12

Please help me I’m terrible with things like this!!!

Answers

In these equations, the value of y is 6/5 times the value of X

Urgent please help..

Answers

Answer:

5.4

Step-by-step explanation:

First find the area of the square.

L times W

5 times 5=25

Now find the area of the cricle

A=[tex]\pi[/tex][tex]r^{2}[/tex]

Substitute pi with 3.14 and radius with 2.5

A= 3.14 times[tex]2.5^{2}[/tex]

A=3.14 times 6.25

A=19.625

Now substract the area of the square from the area of the circle

Your answer will be 5.375

The rounded answer will be 5.4

Nathan is saving up to buy a new phone. He already has $90 and can save an additional $10 per week using money from his after school job. How much total money would Nathan have after 4 weeks of saving? Also, write an expression that represents the amount of money Nathan would have saved in w weeks.

Answers

Answer:

$130

Step-by-step explanation:

If Nathan already has $90 then you would add the amount of money collected after the 4 weeks. In each week he makes $10.

The equation would be $90+($10x4)= $X

Which pair of triangles below MUST be similar?

Answers

Answer:

i think is C

Step-by-step explanation:

Answer:

Its C

Step-by-step explanation:

Brain

Other Questions
Is this linear or non-linear??? combine the following fractions and express in fully reduced form.x/5+4/3 what is the oppiste of 9 please i give (brainlist) if you complete it and correct answers What is Presidents Day explain two ways in which the impact of the printing press of the middle 1400s could be compared to the impact of the invention of the iPad. Jose has saved $135 towards the purchase of a PlayStation 5. The total cost of the PS5 is $499. How much more money does Jose need to save? Write an addition equation and solve. jack has sold 6 of the 90 cards he made. He sells the same number of cards each of the next 12 days. Write an inequality to represent the number of cards, c, Select the correct answer.Which statement about a histogram is true?A. Histograms can plot both positive and negative values on both axes.B. Histograms can be used to exhibit the shape of distributions.C. Histograms are plots of individual data values.D. Histograms show the division of quartile regions for a distribution. Find the equation of a line perpendicular to y=-3x-1 that contains the point (-1,1). Write the equation in slope intercept form. A ball is dropped over the edge of a building. How fast is the ball moving 2.0 secondsafter being dropped? Twice a number added to a smaller number is 5. The difference of 5 times the smaller number and the larger number is 3. Fill in the blank with the correct form of faire.Amanda___ ses devoirs de franais.FaisFait Font Faisez What is wrong with this person's karyotype I have to turn this in tonight please help :( There are 12 red marbles in a bag. The ratio of the total number of marbles in the bag to the number of red marbles in the bag is 5:2. How many marbles are in the bag? Darren and his 2 sisters want to equally share 17 tokens at an arcade. How many tokens will each of them get 12) 44acuteobtuserightstraight Floods are disturbances which cause high amounts of water which generally have strong pulls. When a forest floods an ecosystem and kills several local organisms it will most likely result in-increased biodiversity and increased sustainability for the forest.Decreased biodiversity and decreased sustainability for the forest.increased biodiversity and decreased sustainability for the forest.decreased biodiversity and increased sustainability for the forest. How is the slope related to a unit rate?