Mathematics College

x^2 – 2x – 54 = 0

I need it in completing the square form

Answers

Answer 1

Completing the Square:

x^2 - 2x = 54

x^2 - 2x + 1 = 54 + 1

(x-1)^2 = 55

x - 1 = ±[tex]\sqrt{55\\}[/tex]

x = 1 ± [tex]\sqrt{55}[/tex]

Related Questions

Workers at a quarry are removing rock at a daily rate of 0.1%. There are 3.2 tons of rock when the work begins.
Which function can be used to find the number of tons of rock left at the end of d days?

Answers

Answer:

c

Step-by-step explanation:

Pls help I’ll brainlest

Answers

Answer:

30.5 feet / minute

Step-by-step explanation:

Rate of descent is the same as speed (of falling). The formula for speed is distance / time = speed

First, find how much it fell.

4595 - 3131 = 1464 feet

Divide the distance by the time.

1464 feet / 48 minutes = 30.5 feet / minute

What is the value of d in the equation?
d'= 14

Answers

3/4 as a number = 0.75

So 1.75 x d = 14

14/1.75 = d

14/1.75= 8

D = 8

What is the mystery number x? x has 3 digits. The tens digit is half the hundreds digits. The number is odd. The sum of the digits is 9. Answer: x = ___

Answers

Answer:

X= 423

Step-by-step explanation:

This answer has 3 digits. The tens digit (2) is half of the hundreds (4). And 4+2+3=9. Also this number is odd

335.71 divided by 1000

Answers

0.33571

Anyways thanks for points

Determine 28.2% of 92.​

Answers

Answer:

25.944

Step-by-step explanatio28.2 percent * 92 =

(28.2:100)* 92 =

(28.2* 92):100 =

2594.4:100 = 25.944

helppppppppppp me please yes please yes lol yes plea

Answers

Answer:

C. 16

Step-by-step explanation:

A number squared means you need to multiply it by itself

So, 4 x 4 = 16

Answer:

c. 16

Step-by-step explanation:

multiply 4 two times because it's squared

4 x 4 = 16

An urn contains b black balls and r red balls. One of the balls is drawn at random, but when it is put back in the urn c additional balls of the same color are put in with it. Now suppose that we draw another ball.

Required:
Show that the probability that the first ball drawn was black given that the second ball drawn was red is b/(b r c).

Answers

Answer:

Please see the explanation below for proof

Step-by-step explanation:

Probability of choosing black ball from the bag

[tex]\frac{b}{b+r}[/tex]

Probability of choosing red ball from the bag

[tex]\frac{r}{b+r}[/tex]

After the addition of c balls of correspondent color –  

P (R2/B1) [tex]= \frac{r}{(r+b+c)}[/tex]

P (R2/B2) [tex]=\frac{r+c}{(r+b+c)}[/tex]

B1 and B2 are mutually exclusive event

P (B1/R2) = [tex]\frac{\frac{r}{(r+b+c)} *\frac{b}{b+r}}{\frac{r}{(r+b+c)}*\frac{b}{b+r} + \frac{r+c}{(r+b+c)}* \frac{b}{b+r}}[/tex]

P (B1/R2) [tex]=\frac{b}{(r+b+c)}[/tex]

Hence, Proved

Зх - у = 2
What is the y corddinate

Answers

Answer:

y=3x-2

Step-by-step explanation:

Answer:

the y is -2

Step-by-step explanation:

wyaggsgssgsgs

Which statement is true about the points shown on the number line.

Answers

Answer:

The top right one is correct

Step-by-step explanation:

Hope I helped

Answer: the top right answer is correct.

Step-by-step explanation:

CAN YOU HELP ME
Explain the differences between expressions and equations.

Answers

Answer:

An expression is a number, a variable, or a combination of numbers and variables and operation symbols. An equation is made up of two expressions connected by an equal sign.

Step-by-step explanation:

have a nice day I hope u pass!

The first grade class has 36 students. The second
grade class has 7 more students than the first grade class. The third grade
class has 25 more students than the first grade class. The fourth grade
class has the same number of students as the first grade class and the fifth
grade class has 9 fewer students than the first grade class. How many
students are there altogether in the five grades? *

Answers

Answer:

36+41+59+36+27=199

Step-by-step explanation:

Answer:

203

Step-by-step explanation:

first grade 36

Second grade 36+7=43

third grade 36+25=61

forth grade 36

fifth grade 36-9=27

36+43+61+36+27=203

slope
y intercept
x intercept​

Answers

Answer:

8.8= slope=1/3

y intercept=4/3

X intercept= -4

8.9 slope=1

Y intercept= 2

X intercept= -2

Step-by-step explanation:

compare the equation with the standard equation Y= MX + C

where M is the slope

to find Y intercept substitute the value of x as 0

to find X intercept substitute the value of Y as 0

AHHH HELP
An aquarium holds 11.94 cubic feet of water, and 2.6 feet long and 1.4 feet wide. What is its depth? Round your answer to the nearest whole number.

Answers

6 feet deep

height/length*width

11.94/2.6*1.4

If f(x) = 2x^3 – 5x^2 + 5, then what is the remainder when f(x) is divided by
x + 2?

Answers

Answer:

-31

Step-by-step explanation:

Do long division and make sure to put a place holder for x

A triangle can be formed with the lengths 10 cm, 5 cm and 14 cm.​

Answers

Answer: yes.

Step-by-step explanation: i dont really get this one so i just said yes

On a sample tray, 6 out of 20 cake samples are chocolate.

What is the probability that a randomly selected piece of cake will be chocolate?

Answers

Answer:

6/20 = 30%

30% is the probability that a randomly selected piece of cake will be chocolate

Derek used 12 pencils during school week. He now has 86 pencils How many pencils did he have at the beginning of the school week

Answers

Answer:98

Step-by-step explanation:

Do mental math if she used 12 and now has 86 then all you do is add 12 and 86 and you get 98

-HELP QUICK!!- What is the distance from P to Q?

A P E X

Answers

Answer:

might be 7

Step-by-step explanation:

count the rise and run from Q to P. count up 3 and right 4.

A deposit that is compounded semiannually at 8% for 4 years has a table value of 0.73503 true or false

Answers

Answer:

FALSE

Step-by-step explanation:

This answer is false. The interest rate per period is 4% (8% / 2), and the total number of compounding periods is 8 (4 years x 2 periods per year).

Therefore, find the intersection of 4% and 8, which is 0.73069.

Can someone please solve number 6 for me it’s urgent

Answers

Answer:

Value of blank = 1 / (-5x)

Step-by-step explanation:

Given:

__ × (-5x) = 1

Find:

Value of blank

Computation:

Assume;

Blank = y

So,

y × (-5x) = 1

y = 1 / (-5x)

Value of blank = 1 / (-5x)

3. What are the factors in this expression 9+ (x-7)(Y+6)

Answers

Try 6578 :) I think that may be right,

If n + 7 = 10, evaluate 2n - 2

Answers

n=10-7

n=3

Now

2n-2

2*3-2

6-2

4

Which expression is equivalent to the product of 6 and y? *I NEED HELP ASAP*
a. 6+y
b. 6-y
c. 6/y
d. 6y

Answers

Answer:

B u got this!

Step-by-step explanation:

Answer:

b

Step-by-step explanation:

what 30 x 23 30 x 23

Answers

30 x 23 = 690

23 x 30 = 690

Answer: 690

Step-by-step explanation:

Now whats 34+35?

What figure is always a rectangle and a rhombus?

trapezoid
parallelogram
quadrilateral
square

Answers

Answer:

square

Step-by-step explanation:

Round 7.954 to the place named.
Hundredths

Answers

Answer:

The answer is 7.95

Step-by-step explanation:

I hope I helped.

The base of a prism has a perimeter of 12 centimeters and a height of 2 centimeters. The area of its base is 5 square centimeters. What is the surface area of the prism?

Answers

Answer:so multiply 12*2=24 and 24*5=120 Is your answer .

Step-by-step explanation:

Asha is hungry. She eats her best friend, Skye. She also eats 10 other people. 10% of them are female. How many males did Asha eat?

Answers

Is she a cannibal or ??

Answer:

9.9, if rounding 10

Step-by-step explanation:

1 (best friend) + 10 (other people)=11 (total people)

10% are female

90% are male

.9*11=9.9

Can I have some help with this? Construct a linear function that has a slope of -3 and passes through the point (-2,3).

Answers

Answer:

-3x-3

Step-by-step explanation:

We want our equation to look like this

y=mx+b

we know that m= -3 so we just need to find b

We can start by plugging in the ordered coordinates into our equation

3=(-3)(-2)+b

Solve for b

3=6+b

b= -3

Which means our final equation is

y= -3x-3

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