solve by completing the square

Solve By Completing The Square

Answers

Answer 1

Answer:

(6 ± √72i) / 6

Hope this helps.

Answer 2

Answer:

Step-by-step explanation:

3[tex]x^{2}[/tex]-6x+9=0

3[tex]x^{2}[/tex] +3x-9x+9=0  (splitting  -6x as +3x & -9x)

3x(x+1)-9(x+1)=0

(x+1)(3x-9)=0

x=-1,3


Related Questions

x · 1 +x1 = _____.

x
1
2x
1 + x

Answers

Answer:

2x

Step-by-step explanation:

x × 1 + x1 = ?1x + 1x = ?2x

[tex]\tt{ \green{P} \orange{s} \red{y} \blue{x} \pink{c} \purple{h} \green{i} e}[/tex]

a man can do a piece of work in 20 days.

i. how much work does he do in 1 day
ii. how much work does he do in 5 days
iii. if he leaves the work after 10 days,how much work is left to do?

pls plssss help​​

Answers

Answer:

Step-by-step explanation:

i) A man can do a piece of work in 20day.

So, in 1 day man can do 1/20 piece of work.

ii) In 1 day man can do 1/20 piece of work

   So In 5 days man can do 1/20*5

    In 5 day man can do 1/4 piece of work

iii) a man can do 1/20 piece of work in 1 day

so in 10 day a man can do 1/20*10= 1/2 work

1/2 work is left to do.

  Hope this helps.

i am trying my best to give the correct answer but i am not sure this is right or not.

please write where I have marked with blue​

Answers

Answer:

figure 5

Step-by-step explanation:

sorry if wrong

Answer:

Fig five is your answer

Step-by-step explanation:

cuz

every element have unique elements

Can someone please help me on this please I don’t understand I’m getting stressed stressed please

Answers

Answer:

2

Step-by-step explanation:

You would have to divide -9 on both sides:

-9x = -18

---      ----

-9       -9

You would get x=2

Your welcome! :)

-y/5 + 4 = 14

HELP ME SOLVE FOR Y​

Answers

Answer:

[tex]y=-50[/tex]

Step-by-step explanation:

[tex]-\frac{y}{5}+4=14[/tex]

⇒ Subtract 4 from both sides:-

[tex]-\frac{y}{5}+4-4=14-4[/tex]

[tex]-\frac{y}{5}=10[/tex]

⇒ Multiply both sides by 5:-

[tex]5\left(-\frac{y}{5}\right)=10\cdot \:5[/tex]

[tex]-y=50[/tex]

⇒ Now, divide both sides by -1:-

[tex]\frac{-y}{-1}=\frac{50}{-1}[/tex]

[tex]y=-50[/tex]

∵OAmalOHopeO∵

Determine if 0.9375 is rational or irrational and give a reason for your answer.

Answers

Answer:

0.9375 is rational

Explanation:

A rational number is any integer, fraction, or terminating decimal (which 0.9375 is)

The decimal number 0.9375 is a rational number.

What is a rational number?

Irrational numbers are all real numbers that are not rational numbers in mathematics. Irrational numbers, on the other hand, cannot be stated as the ratio of two integers. Decimal notation is the term used to describe the method of representing numbers in the decimal system.

A rational number is one that can be stated mathematically as the ratio or fraction p/q of two numbers, where p and q are the numerator and denominator, respectively.

A rational number is any integer, fraction, or terminating decimal (which 0.9375 is). The given number 0.9375 is a rational number because it can be written in the form of the fractions like p / q.

Therefore, the decimal number 0.9375 is a rational number.

To know more about a rational number follow

https://brainly.com/question/511377

#SPJ2

Pls help I’ll give you 35 points You toss a coin four
times. What is the
probability of getting
tails all four times?
Make a tree diagram
for tossing a coin
four times.

Answers

Answer:

.375 or 6/16

Step-by-step explanation:

When you flip a coin you have 50/50 chance for it to land on heads or tail, assuming its not weighted or a trick coin.

Do this 4 times and the chances are now slimmer due to the amount of times it was flipped. In this case the probability of of you getting tails every time if you flip the coin 4 times is now .375 chance or 6/16. Here's the link to my work in a tree diagram

https://socratic.org/questions/if-you-flip-a-fair-coin-4-times-what-is-the-probability-that-you-will-get-exactl#398810

Paste this in to your search bar to get my tree diagram

School Supplies At the school store, notebooks cost $3.49. How
much will you pay for 4 notebooks?


HURRY!!

Answers

Answer:

3.49x4=$13.96

Step-by-step explanation:

¹3.³49

4

13.96

Answer:

$ 13.56

Step-by-step explanation:

3*4= 12

0.4*4= 1.6

0.09*4=0.36

12+ 1.6+0.36= 13.96

This means you pay $ 13.56 for the notebooks.

Hope that helped.

Is 4.38 a rational number?

Answers

Yes, it would only be irrational if the numbers had no end, (not repeating like .6666666…)
decimals that end, or repeat the same pattern are rational numbers.

100 points & i'll give brainliest!
find the indicated intersection or union. express your answers in interval notation
(-1,1) U [0,6]

Answers

Union means you take everything that was included in either individual interval.

The first interval goes from -1 to 1 (not including either endpoint).
The second interval goes from 0 to 6 (including both endpoints).

So, the first one starts at -1 and keeps going to the right, overlapping where the second one picks up and you keep going until you get to 6.

You still need to leave out -1 and include 6.

Answer: (-1,6]

Simplify the expression and write the result in standard form, a+bi.

6 - 8i / -2

Answers

Answer:

[tex] \frac{6 - 8i}{ - 2} = \frac{6}{ - 2} - \frac{8i}{ - 2} (splitting \: denomenator) \\ = - 3 - - 4i \\ = - 3 + 4i \\ thank \: you[/tex]

(please help!)
Add −1.25+2.5

Plot the first addend and the sum on the number.

Answers

Answer:

the answer of this question is 1.25

-1.25+2.5 = 1.25.
___

(PLEASE SHOW PICTURES ON HOW TO SOLVE THIS)

Answers

Answer:

Fred is [tex]\frac{17}{24}[/tex] ft taller than Benny

Step-by-step explanation:

Subtract Benny's height from Fred's height

4 [tex]\frac{1}{12}[/tex] - 3 [tex]\frac{3}{8}[/tex] ( change to improper fractions )

[tex]\frac{49}{12}[/tex] - [tex]\frac{27}{8}[/tex]

The LCM of 12 and 8 is 24 , then

= [tex]\frac{49(2)}{12(2)}[/tex] - [tex]\frac{27(3)}{8(3)}[/tex]

= [tex]\frac{98}{24}[/tex] - [tex]\frac{81}{24}[/tex]

= [tex]\frac{17}{24}[/tex]

yo whats 3+3 equal to ?

Answers

6

but some foolish people say correct answer is 33.

Mary, Peter, and Lucy were picking chestnuts. Mary picked twice as much chestnuts than Peter. Lucy picked 2 kg more than Peter. Together the three of them picked 26 kg of chestnuts. How many kilograms did each of them pick?

Answers

Answer:

Peter = 6 kg

Mary = 12 kg

Lucy = 8 kg

Step-by-step explanation:

let us take number of kg's peter took as x

then lets form an expression to find x

let us take mary's chestnuts as = 2x (twice as much as peter)

let us take Lucy's chestnuts as = 2 + x (picked 2 kg more than peter)

so

x + 2x + 2+ x = 26

4x + 2 = 26

4x = 26 - 2

4x = 24

x = 24/4

x = 6

now let us see how much each of them picked while replacing 6 by x

Peter = x

         = 6 kg

Mary = 2x

         = 2(6)

         = 12 kg

Lucy = 2+x

        = 2 + 6

        = 8 kg

now let us cross check to see the answer

6 + 12 + 8

18 + 8

= 26

CROSS-CHECKED

Peter- 6 kg
Mary- 12 kg
Lucy- 8 kg

if ad and pm are medians of two similar triangles abc and pqr such that ad:pm=4:9, then calculate ar. triangle abc/ar. triangle pqr​

Answers

Answer:

4/9

Step-by-step explanation:

ad(base)/2 = abc

4x(4y)/2 = 4xy/2 = 2xy

pm(base)/2 = pqr

9x*9y/2 = 9xy/2 = 4.5xy

2xy/4.5 xy = 2/4.5 = 4/9

I'm not really sure, hopefully it works. I suck at geometry.

Solve the equation. Ch
6. 10x + 2 = 32

Answers

Answer:

10x=32-2

10x=30

x=30/10

answer x=3

X=3,hope this helps!

**Answers needed fast** What goes in the small / little boxes?

Answers

Answer:

149, 520 and the littlest boxes is 0 and 1

Step-by-step explanation:

The quotient of 105 and the sum
of one and four.

Answers

Answer:

21

Step-by-step explanation:

105/(1+4)

= 105/5

= 21.

y is seven times the value of x.
The equation is y=

Answers

Answer:

y=7x

hope it helps!!!!!!!

plsss helpppp will mark brainliest!!

Answers

Answer:

D. 2¹⁵/4¹⁰

Step-by-step explanation:

(2³/4²)⁵ = 1/64

A. 2⁸/4⁷ = 1/128

B. 2⁵/4⁴ = 1/16

C. 2⁶/4⁶= 1/128

D. 2¹⁵/4¹⁰= 1/64

SO (2³/4²)⁵ = 2¹⁵/4¹⁰

i really need help algebra​

Answers

Answer:

Wouldn’t the intercept be zero?

Is 4/4 a rational number

Answers

Answer:

Yes,it is in the form of p/q even after simplify

There are 5 numbers, they are- 5,8,2,9,10
Find the mean, median and mode of it.

Answers

Mean=6.8 Median=2 Mode=none

Answer:

Mean: 6.8

Median: 2

Mode: There's no mode

Step by step explanation:

Sum of all the numbers divided by 5The middle of the setNo mode in this set

Hope it helps ;)

Please mark as brainliest!

What is 673/3 as a mixed number!?

Answers

Answer:

224 1/3 is the mixed fraction form for 673/3

Answer:

224 1/3 in mixed form

−6x
2
y
3

24x
3
y
2




+3x(x
2
+5)+(x−7)(x+7)+
y
8x



for x = 4 and y = 2.

Answers

Answer:

you can eat this noddles then you will got answer

Step-by-step explanation:

you can eat this noddles then you will got answer

Which property is illustrated
(properties such as commutative, associative, inverse, etc.)
7(8-3)=7(5)

Answers

Answer:

Order of operation

Step-by-step explanation:

Given:

7(8 - 3) = 7(5)

The difference is:

8 - 3 = 5

Since the operation was to find the value of expression within the parenthesis, this would be an "order of operation" that is illustrated here.

Answer:

Operation Order or Order of Operation

Step-by-step explanation:

Here we have to solve the bracket

[tex]\\ \sf\longmapsto 7(8-3)[/tex]

[tex]\\ \sf\longmapsto 7(5)[/tex]

[tex]\\ \sf\longmapsto 35[/tex]

need help with this please

Answers

hi <3

it would be option A and option C, i believe.

hope this helps :)

The width of a rectangle measures (3s+t) centimeters, and its length measures (3s-9t) centimeters. Which expression represents the perimeter, in centimeters, of the rectangle?

-16+12s
6s-8
12s+1-18t
12s-16t

Answers

Answer:

Step-by-step explanation:

Hello!

2(3s+7) + 2(3s-9t)

= 6s +14 + 6s -18t

= 12s -18t +14

Teacher: Who can tell me how to simplify 3 + 5 x 2 – 4?
Student -girl: I think you should do 3 + 5 first and the answer is 12.
Student -boy: I think you do 5 x 2 first and the answer is 9
Teacher: Why did the boy and girl get different answers?

Answers

Answer:

3+5×2-4

3+10-4

13-4

9

Step-by-step explanation:

But I solve like this and the answer is 9 I am student girl.

Answer:

The girl didn't follow PEMDAS

Step-by-step explanation:

PEMDAS is the order in which you solve mathematical equations.

Parentheses, Exponents, Multiplication, Division, Addition and Subtraction.

If you add before multiplying you'll get a completely different answer.

The boy followed PEMDAS, while the girl didn't.

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