If using the method of completing the square to solve the quadratic equation x^2-5x-19=0x, which number would have to be added to "complete the square"?

Answers

Answer 1

Answer:

25/4 or 6.25

Step-by-step explanation:

Given that the general equation of  a quadratic equation is given as

ax^2 + bx + c = 0, to complete the square, we subtract c from both sides of the equation and add the square of (b/2a) to both sides.

Hence given x^2-5x-19=0, to complete the square, we add

(-5/2)^2 to both sides following the illustration given.

This is 25/4 or 6.24


Related Questions

find the slant height of a cone that has a diameter of 8 cm and a total surface area of 124(pi) cm^2
PLS HELP

Answers

Answer:

The answer is 188

Step-by-step explanation:

because cm is 8 and cm has the exponent of 2 so that will equal 64 and 64 plus the area is 188  

In the figure, line m
|| line n.
х
m
740
What is the measure of angle x?
O A. 940
O B. 74°
O C. 100°
D. 106°

Answers

94 is the correct answer I believe

Please help quick will mark brainliest

Answers

Answer: (-2,1) (-5,0) (-1,-4) are the cooridents for the reflection

Step-by-step explanation:

PLS HELPP ITS A TEST!!! I WILL GIVE BRAINLIEST!!!
Heather puts together 2/5 of a puzzle on Saturday and 3/10 on Sunday. Nicole has the same puzzle, and she puts together 4/5 of her puzzle. How much more of the puzzle does Nicole put together than Heather?

Answers

Answer:

There is no picture.

Step-by-step explanation:

Answer:



Either 1/10 or 9/10


A store sells memory cards for $25 each.


The markup for each memory card is 25%. How much did the store pay for 50 memory cards?

Answers

Answer:

$937.50

Step-by-step explanation:

25 decrease 25% =

25 × (1 - 25%) = 25 × (1 - 0.25) = 18.75

18.75 × 50 = 937.50

The amount that the store pays for 50 memory cards will be $1,000.

What is the percentage?

The amount of any product is given as though it was a proportion of a hundred. The ratio can be expressed as a quarter of 100. The phrase % translates to one hundred percent. It is symbolized by the character '%'.

The percentage is given as,

Percentage (P) = [Final value - Initial value] / Initial value x 100

A store sells memory cards for $25 each. Then the cost price of each memory card is given as,

⇒ $25 / 1.25

⇒ $20

The amount that the store pays for 50 memory cards will be given as,

⇒ $20 x 50

⇒ $1,000

The amount that the store pays for 50 memory cards will be $1,000.

More about the percentage link is given below.

https://brainly.com/question/8011401

#SPJ2

WILL GIVE BRAINLIEST!!

Answers

Answer:

8/3 meters (I wrote it as an improper fraction to avoid the hassle of writing repeating decimals)

Step-by-step explanation:

Don't try to include the timber in this problem. It is unnecessary. So, let's focus on the fact that the triangle with 3cm, 1.6m, and a portion of the timber is similar to the triangle with (3+2) cm, ?m, and the full length of the timber. Now, to find the ratio; we know that the side with 3 cm is similar to the side in the other triangle with a measure of 3+2=5 cm. So the ratio is 5/3. Now, we want to find out how far up the timber will go up the wall. This means you want to find the vertical measurement. So, multiply 1.6 (8/5) by 5/3, equaling 8/3.

Henry places £6000 in an account which pays 4.6% compound interest each year
Calculate the amount in his amount after 2 years

Answers

Answer:

£ 6,564.70

Step-by-step explanation:

Henry places £6000 in an account which pays 4.6% compound interest each year. Calculate the amount in his amount after 2 years

Compound Interest formula =

A = P(1 + r/n)^nt

A = Final Amounrt

P = Principal = £6,000

r = Interest rate = 4.6%

t = Time in years = 2 years

n = Compounding frequency = Yearly = 1

First, convert R percent to r a decimal

r = R/100

r = 4.6%/100

r = 0.046 per year,

Then, solve our equation for A

A = P(1 + r/n)^nt

A = 6,000.00(1 + 0.046/1)^(1×2)

A = £ 6,564.70

The amount in his account after 2 years = £ 6,564.70

Which graph represents f(x) = 6 cos (4pix)

Answers

Look at the picture below!!

If this helped mark me brainliest pls!!

Paul, Fiona and Pip share some sweets in the ratio 4:1:3. Paul gets 10 more sweets
than Pip. How many sweets are there altogether?

Answers

4x10= 40 sweets. (Paul)
1x 10= 10 sweets. (Fiona)
3x10=30 sweets (pip)
40+10+30= 80
80 sweets all together.

please i need help ASAP !

Answers

Answer: y = x + 7

Step-by-step explanation:

the slope is rise / run which is 1 /1 so our slope would be 1 aka x

next is the y intercept which is 7

so the equal would be y = x + 7

PLS HELP ASAP I WILL GIVE BRAINLIEST

Answers

Answer:

It is 31

Step-by-step explanation:

Answer:

2.14

Step-by-step explanation:

what is the value of x?

(10x-20)° / (6x + 8)°

enter your answer in the box

x = ?

Answers

Step-by-step explanation:

(10x-20)+(6x+8)= 180

16x -12=180

16x= 192

x= 12°

Hello I am new to Brainly Hope it will help me​

Answers

Answer:

Welcome ganger

Step-by-step explanation:

Answer:

It will

Try not to use too many Pts

A: h=12t
B: t = 12h
C: c= h/12
D : h= c/12
PLEASE HELP THANKS IF U DO

Answers

Answer:

D i think is the answer

Step-by-step explanation:

im not sure ok so im just helping

In the laundry basket there are 4 black socks, 7 pink socks, and 10 white socks. Allison will randomly select 2 socks from the basket one at a time without replacement. What is the probability that Allison will select 2 pink socks?

Answers

Answer: [tex]\dfrac{1}{10}[/tex]

Step-by-step explanation:

Given: In basket, we have

4 black socks, 7 pink socks, and 10 white socks.

Total socks = 4+7+10 = 21

Probability that first sock is pink = [tex]\dfrac{\text{Number of pinks socks}}{\text{Total}}=\dfrac{7}{21}=\dfrac13[/tex]

Now basket has 6 pink socks left and total socks left= 20

Probability that second sock is pink =[tex]\dfrac{6}{20}=\dfrac{3}{10}[/tex]

The probability that Allison will select 2 pink socks = [tex]\dfrac13\times\dfrac{3}{10}=\dfrac{1}{10}[/tex]

Hence, the probability that Allison will select 2 pink socks = [tex]\dfrac{1}{10}[/tex]

Cuales son los lados que faltan?
Puede alguien ayudarme!??

Answers

Answer:

Yo elegiría la respuesta ya seleccionada

Step-by-step explanation:

What is the percent increase from 50 to 69

Answers

Detailed answer:
A change from 50 to 69 represents a positive change (increase) of 38%
Use the formula found below on this webpage to find the percent change by replacing the given values:
Percent change = New - Old
|Old|
× 100%
Percent change = 69 - 50
|50|
× 100% =
19
50
× 100 = 38% (increase)
Where: 50 is the old value and 69 is the new value. In this case we have a positive change (increase) of 38 percent because the new value is greater than the old value.
This is a simple feat to figure out.

First find the difference between 69 and 50.

69 - 50 = 19


Now to find the decimal, divide 19 by 50 which would equal 0.38. And to find the percentage, move the decimal two spaces to the right.


Answer: 38%

ILL GIVE BRAINLIEST
A gift store owner used 9 rolls of wrapping paper to wrap his customers’ gifts last week. Each roll was 66 1/2 in. long. How many gifts did he wrap if a 9 1/2 in. long piece of wrapping paper was used to wrap each gift?

Answers

Answer:

Answer is 7

Step-by-step explanation:

If the roll was 66 1/2 rolls long, we have to calculate and know how many pieces of wrapping paper for the roll so if each wrapping paper is 9 1/2 then you would have to divide 66 1/2 by 9 1/2 so you would need 7 wrapping papers.

ill give braniliest
the 1st term in a sequence is 50 the term to term rule is subtract 10 what is the 4th term

Answers

Answer:

The fourth term is 20

Step-by-step explanation:

first term =50

term rule = n-10

if first term is 50

second term =50-10=40

third term =40-10=30

fourth term =30-10=20

Answer: I would answer but the person who answered has the correct answer

Step-by-step explanation:

Imma go help someone who needs help with math ;)

What set of numbers does 10 belong?

Answers

Answer:

even

Step-by-step explanation:

Answer:

even

Step-by-step explanation:

HELP ME ITS DUE IN 30 MINS

Answers

Step-by-step explanation:

honestly man i dont know how to help

Describe what type of transformation has taken place?

Answers

Answer:

reflection in the x-axis and in the y-axis

Step-by-step explanation:

Answer:

This could be reflection over the y axis and then the x axis or it could also be a 180° rotation around the origin.

Step-by-step explanation:

Either way the first figure will become the second figure.

1 yd = ___ ft
48 in = ___ ft
10,560 ft = ___ mi
5 ft = ___ in
3 m = ___ cm
24 in = ___ ft
3 ft = ___ in
4 yd = ___ ft
3 mi = ___ ft
24 ft = ___ yd
8 km = ___ m
6 cm = ___ mm
1 yd = ___ in
2 yd = ___ in
200 cm = ___ m
5 km = ___ cm
7,000,000 mm = ___ km
56,000 cm = ___ mm

Answers

1 yd = 3 ft

48 in = 2 ft

10,560 ft = 2 mi

5 ft = 60 in

3 m = 300 cm

24 in = 2 ft

3 ft = 36 in

4 yd = 12 ft

3 mi = 15840 ft

24 ft = 8 yd

8 km = 8000 m

6 cm = 60 mm

1 yd = 36 in

2 yd = 72 in

200 cm = 2 m

5 km = 500,000 cm

7,000,000 mm = 7 km

56,000 cm = 560,000 mm

What is the answer to 3m + 4m + 6m + 5m

Answers

Answer: 18m

Step-by-step explanation:

you have to add 3 + 4 + 6 + 5. it equals 18.

please help!!
real answers only

Answers

Answer:

TUJ = 29

Step-by-step explanation:

178-149

Answer:

m∠ TUJ = 29°

Step-by-step explanation:

Although this question looks hard, it really is not.

Since we know that TUV = 178° and we know that JUV = 149° we can easily figure out TUJ.

First, since we know that the total is 178° (TUV) we can subtract angle JUV from TUV to get TUJ

178° - 149° = ?

178° - 149° = 29°

Hope this Helps!!! :)

Pls pls help I will mark BRAINLIST

Answers

Answer:

54π

Step-by-step explanation:

To find the volume of the cylinder, you will be using V=π(r^2)h

r = radius = 3

h = height = 6

V = π(3^2)(6) = 54π

The bracket means to multiply.

Answer:

54

Step-by-step explanation:

can i have brainlest

2 2/5 is 4/15 of x. What is x?

Answers

Answer:its 0.4

Step-by-step explanation:brainliest plz

Find each missing length

Answers

Answer:

you didnt provide any info over the question

Cant see photo needs to show photo in order for me to answer

Write an equation in slope intercept form (y=max+b) for the line passing through the points. Show your algebraic solving steps.

(-2, -1) and (2,3)

Answers

Find the gradient first

m = (y2-y1)/(x2-x1) = 3-(-1)/2 - (-2) = 4/4 = 1

then find the equation of the... slope ._.

y - y1 = m(x - x1)

y - (-2) = 1(x - 3)

y + 2 = x - 3

y =x -3 - 2

y = x - 5

So the equation is y = x - 5

Joan decided to look at new and used cars, Joan found a used car for $18000. Joan found that she paid 75% of the price of a new car. How much would a new car cost? Round your answer to the nearest whole number if necessary​

Answers

Answer:

22000 i think

Step-by-step explanation: I divided it into 3=6000

to find the extra 25% i added an extra 6000

so I did 4(18000/3=6000) or 6000*4

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