Given the equation px^2 + 8x + 8 = 0 has equal roots find the value
of p.

Answers

Answer 1

[tex]\\ \sf\longmapsto px^2+8x+8=0[/tex]

Equal roots means Discriminate=0

[tex]\\ \sf\longmapsto D=0[/tex]

[tex]\\ \sf\longmapsto b^2-4ac=0[/tex]

[tex]\\ \sf\longmapsto 8^2-4(8)(p)=0[/tex]

[tex]\\ \sf\longmapsto 64-32p=0[/tex]

[tex]\\ \sf\longmapsto 32p=64[/tex]

[tex]\\ \sf\longmapsto p=2[/tex]

Answer 2

Answer:

p = 2

Step-by-step explanation:

Since the roots are equal, the given equation should be a perfect square:

px² + 8x + 8 = 0

Let p = 2q, since with odd value of p we can't get a perfect square:

2qx² + 8x + 8 = 0, divide all terms by 2qx² + 4x + 4 = 0

The value of q should be 1 to make it a perfect square:

x² + 4x + 4 = 0(x + 2)² = 0

Since q = 1, the value of p is:

p = 2q = 2*1 = 2

Related Questions

4.


Graph the equation by translating y = |x|.

y = |x + 5|

A. Graph a

B. Graph d

C. Graph b

D. Graph c

Answers

9514 1404 393

Answer:

  D. Graph c

Step-by-step explanation:

Replacing x in f(x) with (x -a) shifts the graph to the right 'a' units. Here 'a' = -5, so the graph is shifted left 5 units. This is shown in Graph C.

_____

Additional comment

Just to make sure you're awake, graph C is selected by choice D.

Answer:

c

Step-by-step explanation:

Partial product method of 475x4

Answers

Answer:

(400x4)+(70x4)+(5x4)=?

Step-by-step explanation:

Divide the greater number into hundreds tens and ones then add the products to get your answer


What is the slope of the line?

Answers

Answer:

1

Step-by-step explanation:

1/1 = 1

if 100 kids = 40%, how many kids =100%

Answers

Answer:

The answer is 250 kids

Step-by-step explanation:

Please give me brainlest

Answer:

250

Step-by-step explanation:

If 100 kids is 40%, then 200 kids (twice as much) is 80%. 20% (what's remaining) is half of 40%, so it is also half of 100; 50. Add that together, 250 kids.

Complete the point-slope equation of the line through
(
1
,

1
)
(1,−1)left parenthesis, 1, comma, minus, 1, right parenthesis and
(
5
,
2
)
(5,2)left parenthesis, 5, comma, 2, right parenthesis

Answers

Answer:

y +1 = 3/4(x -1)

Step-by-step explanation:

I don’t understand this please help

Answers

Answer:

3 <----> [tex]\sqrt{9}[/tex]

10 <----> [tex]\sqrt{100}[/tex]

8 <---> [tex]\sqrt{64}[/tex]

9 <--->[tex]\sqrt[3]{729}[/tex]

6 <----> [tex]\sqrt[3]{216}[/tex]

7 <---->[tex]\sqrt[3]{343}[/tex]

Step-by-step explanation:


All you doing is just divide and multiplying

Solve for x, y, and z

Answers

Answer:

Step-by-step explanation:

19 from pythagoras theorem

x^2 = 15^2 + 6^2

x^2 = 225 + 36

x^2 = 261

x = sq.root of 261

x=16.2

20 Using SOHCAHTOA

Cos theta = adj/ hypotenuse

cos y = 24/30

cos y = 0.8

y= arc cos 0.8

y = 36.9

Help!! Due today!! Will mark brainliest!!

Answers

             I do not believe this is correct, (I have been checking it), but here is my work and I hope it helps you to figure out the correct answer!

(It has been a bit since I've done this haha)

[Equation] [tex]A = d(\frac{(1+i)^{n}-1}{i})[/tex]

[Plug-In] [tex]152,000 = d(\frac{(1+0.045)^{168}-1}{0.045})[/tex]

          () 4.5% -> 0.045

          () 14 years * 12 = 168 months

This is where I loose confidence in it, just so you know:

[Addition] [tex]152,000 = d(\frac{(1.045)^{168}-1}{0.045})[/tex]

[Exponent of 168] [tex]152,000 = d(\frac{(1,627.56)-1}{0.045})[/tex]

[Subtract] [tex]152,000 = d(\frac{1,626.56}{0.045})[/tex]

[Divide] [tex]152,000= 36,145d[/tex]

[Divide Again] d = 4.2

(which doesn't sound right to me haha, 4 * 12 = 48 * 14 =672)

Have a nice day!

   I know this is not exactly what you are looking for and I am sorry, wanted to share with you what I had! (ノ^∇^)

- Heather

6.

Bella wants to write two equations to model the streets on this map. She can use y = x – 4 to describe Platte Way. Find one absolute value equation to describe Marteen Rd and Smith St.

A. y = |x – 3| – 2

B. y = |x + 3| – 2

C. y = |x + 2| – 3

D. y = |x – 2| – 3

Answers

Answer:

C.    y = |x + 2| – 3

Step-by-step explanation:

I got this answer correct on Gradpoint

At the track meet, 1/5 of the people participated in the high jump. 2 more people joined making the ratio who did the high and who didn’t 1:3. How many people were there at the end? I answered 16 but I think I’m wrong so please correct. :)

Answers

Answer:

Step-by-step explanation:

When Brooklyn commutes to work, the amount of time it takes he
normally distributed with a mean of 54 minutes and a standard deviation of 4
minutes. Using the empirical rule, what percentage of her commutes will be between
50 and 58 minutes?

Answers

Answer:

Step-by-step explanation:

68

The percentage of her commutes will be between 50 and 58 minutes is 68%.

What Is an Empirical Rule in Statistics?

The empirical rule, also known as the three-sigma rule or the 68-95-99.7 rule, is a statistical rule that states that almost all observed data for a normal distribution will fall within three standard deviations (denoted by σ) of the mean or average (denoted by µ).

Given: mean=54, standard deviation =4 min

The Empirical says,

mean-standard deviation= 54-4=50

mean - standard deviation= 54+4= 58.

Now,

P([tex]\mu[/tex]-6 ≤ X ≤  [tex]\mu[/tex] +6) ≈0.68

Hence, percentage of her commutes will be between 50 and 58 minutes is 68%.

Learn more about Empirical rule here:

https://brainly.com/question/14735795

#SPJ2

The sum of 8n^2-3n+10 and -3n^2 -6n-7 is​

Answers

Answer:5n^2-9n-7

Step-by-step explanation:

1. Express 14/100 as a negative exponent.

2. What is the reciprocal of (100)^-1

Please answer with steps. ​

Answers

Step-by-step explanation:

Number 1

[tex] = \frac{14}{100} [/tex]

[tex] = \frac{14}{ {10}^{2} } [/tex]

[tex] = 14 \times {10}^{ - 2} [/tex]

[tex] \: [/tex]

Number 2

[tex] = {100 }^{ - 1} [/tex]

[tex] = \frac{1}{ {100}^{1} } [/tex]

[tex] = \frac{1}{100} [/tex]

A sling is in the shape of an isosceles triangle with a perimeter of 155 inches. The longest side of the sling is 14 inches longer than either of the other two sides. Find the lengths of each side.

Answers

Hello there.

To answer this question, we need to remember some properties of the isosceles triangle.

First (and most importantly), an isosceles triangle is composed by three sides, in which only two of the sides have equal length.

The perimeter of a triangle is given by the sum of the lengths of the sides, such that: [tex]2p={\ell}_1+{\ell}_2+{\ell}_3[/tex], in which [tex]p[/tex] is the semiperimeter.

Given that the perimeter of such triangle is equal to [tex]155~\text{in}[/tex] and the longest side is [tex]14~\text{in}[/tex] longer than both the other sides, we have that:

[tex]\begin{cases}{\ell}_2={\ell}_3\\ {\ell}_1+{\ell}_2+{\ell}_3=155\\ {\ell}_1={\ell}_2+14\\\end{cases}[/tex]

Using these informations, in terms of [tex]{\ell}_2[/tex], we get:

[tex]{\ell}_2+14+{\ell}_2+{\ell}_2=155[/tex]

Sum the equal terms on the left hand side of the equation

[tex]3\,{\ell}_2+14=155[/tex]

Subtract [tex]14[/tex] on both sides of the equation

[tex]3\,{\ell}_2=141[/tex]

Divide both sides of the equation by a factor of [tex]3[/tex]

[tex]{\ell}_2=47~\text{in}[/tex]

Substituting this value on the first and second equations, we get:

[tex]{\ell}_3=47~\text{in}\\\\\\ {\ell}_1=47+14=61~\text{in}[/tex]

Thus, the length of the sides of this triangle are, respectively from the largest to the smallest: [tex]{\ell}_1=61~\text{in},~{\ell}_2=47~\text{in},~{\ell}_3=47~\text{in}~~\checkmark[/tex]

These are the values we were searching for.

Please help me before I die​

Answers

Answer:

The answer is 48.

Step-by-step explanation:

The best way is to follow the question through. Calculate the Greatest Common Factor, in this case being 2. And the Least Common Multiple, being 60. She then subtracts the difference, in this case being 60 - 2, which gives you an answer of 48.

Geometry B: fill in the blank

Answers

Step-by-step explanation:

(3,-1)

h=3

it shows on the graph in x axis

k= -1

it also shows in the graph

(x-3) + (y+1)

Determine the distance between the points (-2.3) and (5. - 3).

Answers

[tex] \sqrt{85} [/tex]

Hope that helped:)

In a magazine, 15% of the pages are
covered in pictures. If the remaining 51
pages of the magazine are text, how
many pages are in the entire magazine?

Answers

Answer:

60 pages

Step-by-step explanation:

0.15x + 51 = x

51 = x - 0.15x

51 = 0.85x

51/0.85 = x

X = 60 (0.15 * 60 = 9 pages covered with pictures)

tonya is 13 1/2 years old. she states "my brother is one-forth my age" according to tonya, how old is her brother

Answers

Answer:

3.73

Step-by-step explanation:

1/4 of 13 1/2 is 3.73

hope this is helpfull

can you relate to the attachment??

What is the equation of the line that passes through the point (-5, -2) and has a
slope of -6/5?

Answers

Answer:

y = -6/5x - 8

Step-by-step explanation:

You just have to use the slope-point equation of a line which is (y - y₁) = m (x - x₁) where y₁ and x₁ are the coordinates of the given point and m is the slope given. So just plug-in x₁ = -5, y₁ = -2, and m = -6/5 to get:

y - ( -2) = -6/5(x + 5)

And simplify to get:

y + 2 = -6/5x - 6

And if you want it in standard form, it is:

y = -6/5x - 8

The function f is defined as follows.
f (x) = [tex]\sqrt[3]{x-3}[/tex]
Find f (-61) and f (128)

Answers

Step-by-step explanation:

f(x) = ³√(x - 3)

f(-61) = ³√(-61 - 3)

f(-61) = ³√-64

f(-61) = -4

f(128) = ³√(128 - 3)

f(128) = ³√125

f(128) = 5

Let the graph of g be a translation 2 units left and 3 units up, followed by a reflection in the y-axis of the graph of f(1) = ? - 24 Write a rule for g.

Answers

Answer:

g(x) = (x+2)^2 - 2x - 1

Step-by-step explanation:

f(x) = x^2 - 2x

g(x) = f(x+2) + 3

g(x) = (x+2)^2 -2(x+2) + 3 = (x+2)^2 - 2x - 1

When we graph the equations, we can confirm that our answer is correct.

The required solution of the given function is  f(x) =[tex]x^{2} -2x[/tex] is reflection on y axis is [tex]g(x)= (x+2)^2 - 2x - 1[/tex].

What are transformations?

A transformation is a general term for four specific ways to manipulate the shape and/or position of a point, a line, or geometric figure. The original shape of the object is called the Pre-Image and the final shape and position of the object is the Image under the transformation.

Given:

The given function is

f(x) =[tex]x^{2} -2x[/tex]

According to given question we have

[tex]g(x) = (x+2)^2 - 2x - 1[/tex]

The graph of g be a translation 2 units left and 3 units up, followed by a reflection in the y-axis of the graph.

By the use reflection on y axis we get

[tex]f(x) = x^2 - 2x\\g(x) = f(x+2) + 3\\g(x) = (x+2)^2 -2(x+2) + 3\\ \\g(x)= (x+2)^2 - 2x - 1[/tex]

Therefore, the required solution of the given function is  f(x) =[tex]x^{2} -2x[/tex] is reflection on y axis is [tex]g(x)= (x+2)^2 - 2x - 1[/tex].

Learn more details about transformations here:

https://brainly.com/question/11709244

#SPJ5

Marla wants to buy a new tablet that cost $565, including tax. she saves $15 per week for 30 weeks . does Marla have enough money saved by the tablet? Explain. ​

Answers

Step-by-step explanation:

No she won't have enough money saved.

This is so because at the end of 30 weeks she would have saved only $450 and short by 115.

What is the Slope of the equation y = x - 2

A 1
B-2
C 2
D 0​

Answers

Answer:

  A.  1

Step-by-step explanation:

The slope is the coefficient of x: 1.

I need help please!

Answers

9514 1404 393

Answer:

  f(g(x)) = 2/(x^2 +4x)

Step-by-step explanation:

  [tex](f\circ g)(x)=f(g(x))\\\\(f\circ g)(x)=f(x+2)=\dfrac{2}{(x+2)^2-4}\\\\(f\circ g)(x)=\dfrac{2}{x^2+4x+4-4}\\\\\boxed{(f\circ g)(x)=\dfrac{2}{x^2+4x}}[/tex]

What was the average temperature for the day? -3°F -1°F 1°F 3°F​

Answers

Answer:

0

Step-by-step explanation:

[tex]\\ \sf\longmapsto Average=\dfrac{Sum\:of\:data}{Number\;of\:datas}[/tex]

[tex]\\ \sf\longmapsto Average=\dfrac{-3-1+1+3}{4}[/tex]

[tex]\\ \sf\longmapsto Average=\dfrac{0}{4}[/tex]

[tex]\\ \sf\longmapsto Average=0°F[/tex]

An orchard has 551 orange trees. The number of rows exceeds the number of trees per row by 10. How many trees are there in each row?

Answers

Answer:

Step-by-step explanation:

the number of rows = n

The number of trees per row = n + 10

n * (n + 10) = 551             Remove the brackets

n^2 +  10n = 551             Subtract 551 from both sides

n^2 + 10n - 551 = 0         This factors.

(n - 19)(n + 29) = 0

Note n + 29 is an extraneous (extra) root which does not work

n - 19 = 0

n = 19

There are  19 rows

Each row contains 19 trees.

Divide and fully simplify, show work please I am stressed

Answers

STEP1: Equation at the end of step 1

[tex] \frac{( {5}^{2} {x}^{2} - 4) }{( {x}^{2} - 9) } \div (5x - 2) \div (x + 3) \\ [/tex]

STEP2:

Simplify — [tex] \frac{25x {}^{2} - 4}{x {}^{2} - 9 } \\ [/tex]

Factoring: 25x2 - 4

Theory : A difference of two perfect squares, A2 - B2 can be factored into (A+B) • (A-B)

Proof : (A+B) • (A-B) =

A² - AB + BA - B² =

A² - AB + AB - B² =

A² - B²

Note : AB = BA is the commutative property of multiplication.

Note : - AB + AB equals zero and is therefore eliminated from the expression.

Check : 25 is the square of 5

Check : 4 is the square of 2

Check : x2 is the square of x1

Factorization is : (5x + 2) • (5x - 2)

Trying to factor as a Difference of Squares:

Factoring: x2 - 9

Check : 9 is the square of 3

Check : x2 is the square of x1

Factorization is : (x + 3) • (x - 3)

Polynomial Long Division :

2.3 Polynomial Long Division

Dividing : 5x + 2

("Dividend")

By : x + 3 ("Divisor")

dividend 5x + 2

- divisor * 5x⁰ 5x + 15

remainder - 13

Quotient : 5

Remainder : -13

Equation at the end of step2:

[tex] \frac{ (5x + 2) • (5x - 2)}{(x + 3) • (x - 3)} ÷ (5x - 2) ÷ (x + 3) \\ [/tex]

STEP3:

Divide[tex] \frac{(5x+2)•(5x-2)}{(x+3)•(x-3)} \: by \: 5x-2 \\ [/tex]

Canceling Out :

3.1 Cancel out (5x - 2) which appears on both sides of the fraction line.

Equation at the end of step3:

[tex] \frac{(5x + 2)}{(x + 3) • (x - 3)} ÷ (x + 3) \\ [/tex]

STEP4:

Divide [tex] \frac{5x+2}{(x+3)•(x-3)} \: by \: x + 3 \\ [/tex]

Multiplying Exponential Expressions:

4.1 Multiply (x + 3) by (x + 3)

The rule says : To multiply exponential expressions which have the same base, add up their exponents.

In our case, the common base is (x+3) and the exponents are :

1 , as (x+3) is the same number as (x+3)1

and 1 , as (x+3) is the same number as (x+3)1

The product is therefore, (x+3)¹ = (x+3)²

Final result :

[tex] \frac{5x + 2}{(x + 3) {}^{2} • (x - 3)} \\ [/tex]

Consider the graph shown.

What is the slope of the graph?
Write an equation for the line.

Answers

Answer:

slope- 3/4. equation- y=3/4x+1

Step-by-step explanation:

to get the equation, you use the formula y=mx+b, where m is the slope and b is the y intercept, which means it is where the line touches the y axis

Please help I’m stuck on this question and i don’t know the answer

Answers

Answer:

y = 1/2x

Step-by-step explanation:

Pick two points:

(2,1) and (4,2)

Find the slope: y2 - y1/x2 - x1

2-1/4-2

1/2 is the slope

The y intercept is 0

Other Questions
From what you know about helium and the elements in its group, which statement best explains why helium is placed where it is, instead of the second column Complete the crossword with six adverbs of frequency. Take help from the clues.ACROSS1. many times5. at fixed intervals6. once a dayDOWN2. two times3, at no time4. at all timesi will mark you brainiest if you answer 3^c=1/27 what is it?? A submarine dives 650 feet every 5 minutes and 5,200 feet every 40 minutes. What is the slope of this line?Enter your answer as a whole number or a fraction in simplest form in the FAST PLS Charlene operates an oil change and tune up service she chargers $33.95 per oil change a tune up is $72.50 for a four cylinder engine,$82.50 for a six cylinder engine and $92.50 for an eight cylinder engine what are the chargers for a week in which Charlenes facility did 35 oil changes and tuned 5 four cylinder engines 7 six cylinder engines and 2 eig cylinder ht engines this is due tomorrow and i have been stuck on it all night !! (im not good at history) Consider the procedure used below to solve the given equation.Given: 4(2x+5)(3x4)=15Step 1: 8x+53x+4=24Step 2: 5x+9=24Step 3: 5x=249Step 4: 5x=15Step 5: 5x5=155Step 6: x=3Which statement about the solution of the given equation is true? Please help ASAP thanks:) Corey spends 16% of his salary on food each week. If his salary is $800 per week, how much does Corey spend on food each week? FE536.3DHelp me please The least expensive type of life insurance is _____. by enabling like-minded white supremacists to pool their ideas, internet social networking sites are likely to contribute to this subset of trace minerals is required in amounts less than what? The heat of fusion of a substance is the energy measured during a. How did the people Washington choose to surround himself with help him succeed? The archaic style ________________ has a rigid frontal position that is an adaptation from Egyptian sculpture. Raul can hit a golf ball 26.4 yards.A.J. can hit a golf ball 10 times as far how far can A.J. hit the ball 3. Gaea made Uranus herso that he would surround her onall sides and would provide a home for immortal beings."a. Love SlaveC. Godb. Protectord. Equal what is 2965 x 10^8 in standerd form