Solve. X^2+8x=9
a. What number should be added to both sides of the equation to complete the square?
b. Solve for x by completing the square

Answers

Answer 1
Can you help me on my recent

Related Questions

what is 48020000 in sintiic notation

Answers

Answer:

4.802 x 10^7

Step-by-step explanation:

Hope this helps! :)

If this wasn't what you were looking for please don't hesitate to comment again. Have a nice day/night! :)

Answer:

4.802 x 10 power of 7

Step-by-step explanation:

i did this so i know

The roots of a quadratic equation are 7 and -3. Which quadratic equation has these roots?
(x + 7) (x – 3) = 0

(x - 7) (x + 3) = 0

(x – 7) (x – 3) = 0

(x + 7) (x + 3) = 0

Answers

The answer is (x - 7) (x + 3) = 0

Explanation: Put both equations equal to 0, so it looks like this: (x - 7) = 0 (x + 3) = 0
It doesn’t matter what you do first but I’ll start with (x - 7) = 0
First you remove the parenthesis
x - 7 = 0
Next you add the 7 on both sides. You do this to cancel the 7 so that the x is by itself.
x = 7
It’s the same thing for the (x + 3) = 0 but I’ll show you anyways
Remove parentheses
x + 3 = 0
Subtract the 3 from both sides that way the 3 cancels out and the x is on its own
x = -3

Write three fractions equivalent to
6
12
12
6

. Scale the numerator and denominator up for the first two and down for the third.

Answers

Answer:

I. think it is12, 6, 2, 1

0505050505050505050 multiplied by 485948

Answers

Answer:

[tex]Product = 2.4542828 * 10^{24}[/tex]

Step-by-step explanation:

Given

[tex]Digit= 0505050505050505050[/tex]

[tex]Digit = 485948[/tex]

Required

Determine the product

The product is:

[tex]Product = 0505050505050505050 * 485948[/tex]

[tex]Product = 2.4542828 * 10^{24}[/tex]

A chef made 30 donuts in 60 minutes. How long would it take him to make 90 donuts?

Answers

It is 180 just do 60 times 3 since 30 times 3 is 90 and you would figure out how long it take him.

Please help let me know if these are right.

Answers

Answer:

Every one except A is correct. it is 7/8 not 8/7

Determine which ordered pair is a solution of y= x+2/5

Wouldn’t it be (0, 2/5)?

Answers

Answer:

(-1,2/5) i'm pretty sure

Step-by-step explanation:

Answer:

(2, 2 2/5)

Step-by-step explanation:

(0, 2/5) is correct, and since the slope is 1, adding any number to both the x and the y would still make it a solution.

In this case, you could add 2 to both x and y, resulting in (2, 2 2/5).

Hope it helped, and if it did, could you consider giving me brainliest? :)

Find the sum or difference for questions 1-3. 20.58 – 13.3 A. 6.88 B. 7.28 C. 33.88 D. 7.58 plz respond fast

Answers

Answer:

B

Step-by-step explanation:

20.58

- 13.3

= 7.28 here u go

The difference between 20.58 and 13.3 is 7.28.

What is a decimal ?

Decimal is a dot or a point which separates the whole part and the fractional part of given number.

According to the given question

The difference of 20.58 and 13.3 is

(20.58 - 13.3 ) can be written as (20.58 - 13.30 ).

If we remove the decimals and simply subtract 1330 from 2058 we get

(2058 - 1330)

= 728 and putting back the decimals in their actual place which was two digits from the leftmost side we get

= 7.28

So the difference between 20.58 and 13.3 is 7.28.

Learn more about decimals here :

https://brainly.com/question/10354322

#SPJ2

Whats a equation that has many solutions?​

Answers

Answer:

3x + 1  - 6 = 3x + 2 - 7

Step-by-step explanation:

Since both sides of the equation are equal, x has infinite solutions.

What is the value of x

Enter your answer in the box

X= ____

Answers

Answer:

x=27⁰

Step-by-step explanation:

4x+7=5(x-4)

4x+7=5x-20

4x-5x=-20-7

-x=-27

x=27⁰

2). Bill has twice as many candies as Fred. Tim has 3 fewer than 3 times as many candles as Fred.
In all, they have 177 candies. How many do they each have?

Answers

Step-by-step explanation:

Answer:-

[tex]\tt{Let \ the \ candies \ taken \ by \ Fred \ be \ x.}[/tex]

Now, let's Solve!

So, according to Question,

Bill = 2x

Tim = 3x-3

Total Candies = 177.

[tex]\bf{x+2x+3x-3=177}[/tex]

Totalling x,

[tex]\bf{6x-3=177}[/tex]

[tex]\bf{6x=177+3}[/tex]

[tex]\bf{6x = 180}[/tex]

[tex]\boxed{\sf{x = 30}}[/tex]

So, Fred has 30 candies.

Bill's Candies = 2×30 = 60 Candies

Tim's Candies = 3×30-3 = 90-3 = 87 Candies.

Hope it helps :)

Rubi works at a party-planing company and makes $7.50 per hour. Her weekly paycheck also inclides a $5 bonus for every party she schedules. Her $265 paycheck last week was for 30 hours. How many parties did she schedule? Explain how you found you're answer.​

Answers

Answer:

8 parties

Step-by-step explanation:

First, find how much of her paycheck was from working 30 hours:

7.50(30)

= 225

Then, subtract this from 265, to find how much money was from bonuses:

265 - 225

= 40

To find how many parties she scheduled, divide 40 by 5, since each party she schedules gives her a $5 bonus:

40/5

= 8

So, she scheduled 8 parties

A taxi charges a flat rate of $3.00, plus an additional
$0.50 per mile. Carl will only take the taxi home if the cost
is under $10, otherwise he will take a bus. Carl is 15
miles from home. Explain how to write and solve an
inequality to determine if Carl will take the taxi or a bus.

HELP

Answers

Answer:he will take the bus

Step-by-step explanation:

Answer:

Let the variable x be the number of miles. Then the problem can be modeled with the inequality 0.5x + 3 < 10,="" in="" which="">x is the number of miles. To solve, first subtract 3 from each

Step-by-step explanation:

Sample Response!!

data will be collected on the following variables. which variable can be considered discrete

Answers

Variables that can only take on a finite number of values are called "discrete variables." All qualitative variables are discrete. Some quantitative variables are discrete, such as performance rated as 1,2,3,4, or 5, or temperature rounded to the nearest degree.

Sorry for the weird looking image help me please :)

Answers

1 : Go .....

[tex]A= bh \: [/tex]

Divided sides by b

[tex] \frac{A}{b} = h \times \frac{b}{b} \\ [/tex]

thus ;

[tex]h = \frac{A}{b} \\ [/tex]

_________________________________

2 : Go .....

[tex]area = height \times length(base) \\ [/tex]

[tex]45 = h \times 9[/tex]

Divided sides by 9

[tex] \frac{45}{9} = h \times \frac{9}{9} \\ [/tex]

[tex]h = 5 \: ft[/tex]

And we're done...

♥️♥️♥️♥️♥️

Determine the y-intercept of the following parabola:

y = 2(x - 5)2 + 4


(0,____ )

Answers

Answer:

              (0, 54)

Step-by-step explanation:

(x, y) = (0, __) ⇒ x=0

y = 2(x - 5)² + 4

y = 2(0 - 5)² + 4

y = 2×25 + 4

y = 50 + 4

y = 54  ⇒  (0, 54)

The equation c = 2r + 8 represents the cost of an amusement park. C represents the total cost, r is the cost per ride and 8 is the entrance fee to enter. Determine whether there is a proportional relationship between r and c.

Answers

Answer:

yes there is because if you do

What is the ratio AC: CB?​

Answers

Answer:

D. 1 : 2

Step-by-step explanation:

Given:

A(-6, -2),

B(6, 7),

C(-2, 1)

Required:

Ratio of AC : CB

SOLUTION:

Find AC:

[tex] AC = \sqrt{(x_2 - x_1)^2 + (y_2 - y_1)^2} [/tex]

Let,

[tex] A(-6, -2) = (x_1, y_1) [/tex]

[tex] C(-2, 1) = (x_2, y_2) [/tex]

[tex] AC = \sqrt{(-2 -(-6))^2 + (1 -(-2))^2} [/tex]

[tex] AC = \sqrt{(4)^2 + (3)^2} [/tex]

[tex] AC = \sqrt{16 + 9} = \sqrt{25} [/tex]

[tex] AC = 5 [/tex]

Find CB:

[tex] CB = \sqrt{(x_2 - x_1)^2 + (y_2 - y_1)^2} [/tex]

Let,

[tex] C(-2, 1) = (x_1, y_1) [/tex]

[tex] B(6, 7) = (x_2, y_2) [/tex]

[tex] CB = \sqrt{(6 -(-2))^2 + (7 - 1)^2} [/tex]

[tex] CB = \sqrt{(8)^2 + (6)^2} [/tex]

[tex] CB = \sqrt{64 + 36} = \sqrt{100} [/tex]

[tex] CB = 10 [/tex]

Find AC : CB

AC : CB = 5 : 10 = 1 : 2

It was -8°F in the morning. The temperature increased throughout the day, and in the afternoon, it was 11°F. How much did the temperature change?

Answers

Answer:

19

Step-by-step explanation

This is simple

I will teach you a simple technique

Count them, don't count the -8

-8, -7, -6, -5, -4, -3, -2, -1, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11

You are just subtracting, but instead counting.

I said not to count -8, because normally in subtraction, we normally don't count the number we are subracting.

for example

8 - 7 = 1

so counting technique

8 - 7, 6, 5, 4, 3, 2, 1

there are 7 numbers, if i didn't count the 8

so it is right.

hope you understand :-)

please help i have a few more questions like these

Answers

Answer:

the answer is the last one.

Step-by-step explanation:

add 10 to right and left sides then divide both sides by 4.

what is the sum of−1/3−(−1/2)

Answers

Answer:

0.16666666666 and keep on going. you can add a line above the number to show infinite 6

Represent the following sentence as an algebraic expression, where "a number" is the
letter x. You do not need to simplify.
The product of 2 and the difference of a number and 9.

Answers

Answer:

1

Step-by-step explanation:

2

Simplify [tex]\frac{6x^{3} y^{3}}{\sqrt20{x}^{5} y^{8} }[/tex] . Recall, no radicals in the denominator. Show your work.

Answers

Answer:

Step-by-step explanation:

ignore the stuff at the top

(0.8918)

Please help for 50 points

Answers

Answer:

sometimes

never

always

sometimes

Step-by-step explanation:

Answer:

sometimes

never

always

sometimes

Step-by-step explanation:i did this...i got it correct

Use the side lengths of triangle DEF and the fact that the triangles are similar to find the length of side AB and type your answer below. (Note: Do NOT include a unit label in your answer.)

ILL GIVE YOU A BRANLIEST IF YOU GET IT RIGHT

Answers

[tex] \frac{12}{3} = \frac{AB}{4} \\ [/tex]

[tex]4 = \frac{AB}{4} \\ [/tex]

Multiply sides by 4

[tex]AB = 16[/tex]

Simplify the following expression. 5/2 + 11/60


A. 31/60


B. 3/5


C. 2/9


D. 37/60

Answers

Answer:

None; equals 161/60

Step-by-step explanation:

5/2    +     11/60

*60             *2

300/120 +  22/120

= 322/120

/2

161/60

D. 37/60 is your answer

Solve the following equation. Check your solution. 5(x+1)=3x - 9​

Answers

Answer:

x=-7

Step-by-step explanation:

If u plug in -7 it will make the equation true

-6*4/2*3-15 help please

Answers

Answer:

-51

Step-by-step explanation:

-6x4/2= -12

-12x3= -36

-36-15= -51

Hope this helps. Plz give brainliest.

Answer:

The answer is -51

Step-by-step explanation:

use order of operations!

[tex]-6*\frac{4}{2}*3-15[/tex]

first, let's simplify the equation.

[tex]-6*2*3-15[/tex]

now solve!

[tex]-6*2*3-15\\-12*3-15\\-36-15\\-51[/tex]

hope this helps!

Which table does not represent a proportional relationship? Please give an accurate answer and explanation! thank you so much and good luck. whoever I declare brainiest gets 25 points​

Answers

Answer:

the 2nd one

Step-by-step explanation:

Fifteen is equal to 7 more than twice a number. Write the equation and
nd the number.

Answers

15 = 7+2x or 15= 2x + 7 is the equation and x=4
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