If using the method of completing the square to solve the quadratic equation
22 + 15x – 11 = 0, which number would have to be added to "complete the
square"?

Answers

Answer 1

Answer:

Step-by-step explanation:

Let's solve your equation step-by-step.

22+15x−11=0

Step 1: Simplify both sides of the equation.

22+15x−11=0

22+15x+−11=0

(15x)+(22+−11)=0(Combine Like Terms)

15x+11=0

15x+11=0

Step 2: Subtract 11 from both sides.

15x+11−11=0−11

15x=−11

Step 3: Divide both sides by 15.

15x

15

=

−11

15

x=

−11

15

Answer:

x=

−11

15


Related Questions

solve using a2 + b2 = c2
show the work please :)

Answers

Answer: 19.20937

Step-by-step explanation:

a2=15

b2=12

c2=?

a2+b2=c2

15(15)+12(12)= c2

225+ 144=c2

√369= √c2

≐19.20937 ft

3√41

Which is more, 1,179 grams or 1 kilogram?

Answers

Answer: 1,179

Step-by-step explanation: because 1 kilogram = 1000 grams so the grams are more

Answer:

1,179 is more

Step-by-step explanation:

bcoz if we convert everything to kg then 1179 is 1.179kg

Simplify sin2q cot2q.

Answers

Answer:

cos2q

Step-by-step explanation:

sin2q x cos2q/sin2q

= cos2q

9(3+v)
answer pleaseee

Answers

Answer:

27+9v

Step-by-step explanation:

distribute



It’s distributing. You multiply 9 with 3 and v. And the answer will be :


= 27+9v

Roman and Ranjan each divided 3.56 by 0.72. Roman got 4.94 for his quotient. Ranjan got 0.04 for his quotient. Which student divided correctly? How do you know? P 7•3

Answers

The answer is 2.84 and I am not sure

Answer:

Step-by-step explanation:

It’s Roman if you do the math you will get 4.94

How would you know

When doing the math i got the answer 4.94 which that mean ranjan divide wrong

The puppy weighed 2 pounds when it was born. He has gained weight, but still weighs less than 11 pounds. How much weight could he have gained?

Answers

3-10 pounds
because it has to be more than 2 pounds and less than 11. hope it helps

Kenny wants to take his dog to obedience school. At Sit and Stay School, 12 lessons cost $96. At Canine Community Center, 25 lessons cost $125. Which is the better deal?

Answers

Answer:

25 lessons that cost $125

Step-by-step explanation:

If 8 lessons cost $96

then, 96/12 =8

therefore a lesson costs $8

If 25 lessons costs $125

then, 125/25= 5

therefore a lesson costs $5 which is cheaper.

11 is what percentage of 16? Round the nearest tenth.

Answers

Answer:

.69, but you can round it to .70 because of the 9

Step-by-step explanation:

70%

Answer:

This can be calculated by dividing 11 over 16, which is equal to about 0.69.

Let me know if this helps!

2 Which of the following fractions are equivalent to 2/4?​

Answers

Answer:

1/2=2/4

Step-by-step explanation:

f(x) = 4x² + 7x – 18
Find f(-9)

Answers

Step-by-step explanation:

f(x) = 4x² + 7x - 18

f(-9) = 4 * (-9)² + 7 * (-9) - 18

= 324 - 63 - 18

= 243

Hope it will help :)

Please help!



Select ALL of the expressions that are equivalent to
3.5 – (4.7).
3.5+ (-4.7)
4.7 – (3.5)
-4.7 + 3.5
3.5 +4.7
3.5 - (-4.7)


Answers

Answer:

Step-by-step 16

16 x 81

PLZ HELP! I'M ON A TIME CRUNCH!
Diego scored 9 points less than Andre in the basketball game. Noah scored twice as many points as Diego. If Noah scored 10 pints, how many points did Andre score?

Answers

Answer:

Let andre score be x points.

then Diego's score will be (x-9) points.

Noah's points=2(x-9) points

the equation is 2(x-9) = 10

dividing both sides by 2,

2(x-9)/2 =. 10/2

x-9= 5

adding 9 both sides,

x-9+9= 5+9

x=14.

Step-by-step explanation:

Answer:

Andre score 14 points

Step-by-step explanation:

noah = 2*diego

diego = andre - 9

given noah = 10

noah = 2*Diego

10 = 2*Diego

Diego = 5

diego = andre - 9

5 = andre - 9

andre = 9 + 5

Andre = 14

-2(p - 1) = 15 HELPPP PLEASEE

Answers

Answer:

p = -6.5

Step-by-step explanation:

-2(p-1) = 15

p-1 = -7.5

p = -6.5

-2(p - 1) = 15


-2p + 2 = 15



Subtract 2 on both sides.


-2p = 13


Divide by -2 on both sides.


p = -6.5

A whole number whose square root is an integer

Answers

Answer:

These are also called "Perfect Squares", and if you're asking what I think you're asking, the first 20 perfect squares are 1, 4, 9, 16, 25, 36, 49, 64, 81, 100, 121, 144, 169, 196, 225, 256, 289, 324, 361 and 400.

Step-by-step explanation:

The possible integer square root are 0,1,2,3 and 4


1. 11f + 15f
2. 18h + 13h
3. 55m + 11
Will give Brainliest Answer

Answers

Answer:

1. 2 6f

2. 31h

3. 1 1 ( 5 + 1 )

hope this helps

Step-by-step explanation:

Answer:

Distributive property:

ab + ac = (a + b)c

Applied to the given expressions:

11f + 15f = (11 + 15)f = 26f 18h + 13h = (18 + 13)h = 31h 55m + 11 = 11(5m + 1)

Find the missing number to make these fractions equal.
3/4 = blank/8

Answers

Answer:

6/8

Step-by-step explanation:

You can multiply the denominator of 4 by two to get 8. But you need to do the same to the numerator, which gives you 6.

Answer:

6/8

Step-by-step explanation:

you multiply both numbers by 2

‼️please help ASAP.

Answers

Try to do them on math -way

Volume of cylinder & cone ... Help me please

Answers

Answer:

The formula for the volume of a sphere is 4⁄3πr³. For a cylinder, the formula is πr²h. A cone is ⅓ the volume of a cylinder, or 1⁄3πr²h.

Estimate 13.5 km to miles ASAP!!!

Answers

Answer:

8.388511

Step-by-step explanation:

Divide by 1.609

The diameter of a circle is 40.0cm. What is the circumference of the circle?
Use 3.14 for pi

Help would really be appreciated bc I do not understand circles lol

Answers

Answer:

Answer is 125.6

Step-by-step explanation:

Diameter=40cm

radius=40÷2 = 20cm

Circumference = 2πr

=2×3.14×20

=125.6

Given a set of data, what steps would you take to identify whether the data showed linear or exponential growth?

Answers

Answer:

See explanation

Step-by-step explanation:

The first thing to do when given a data set is to ensure that the x-values are spaced in equal intervals.

The next is now to determine if the given y-values are increasing by the same amount(a common difference) or by the same ratio(a common ratio).

The data set is linear if the y-values increase by a common difference and the data set is exponential if the y-values increase by a ratio or factor.

Answer:

Which of the following steps did you include? Check all of the boxes that apply.

Make sure that the x-values are spaced apart in equal intervals.

Determine whether the y-values increase by the same amount or by the same ratio.

Decide that the data is linear because the y-values increase by a common difference.

Decide that the data is exponential because the y-values increase by a ratio or factor.

Step-by-step explanation:

i took the test

An average person can type 2,4002,400 words per hour. Trista types at the same rate as the average person and made the double number line below to estimate how long it will take her to type her research paper. ​​Using Trista's double number line, estimate how long it will take her to type her 1,400-word research paper.

Answers

Answer:

35 minutes

Step-by-step explanation:

Given that:

Trista:

Average word type per hour = 2400 words /hr

For Trista to type her 1400 word research paper ;

It will take 'h' hour

If

2400 words = 1 hour

1400 words = h

Cross multiply :

2400h = 1400

h = 1400 / 2400

h = 0.5833333 hr

To minutes, it will take :

0.5833333 * 60 = 35 minutes

Hence, it will take Trista 35 minutes or 0.5833333 to type her 1400 words research paper.

PLEASE HELP!!
if y(x) = 5x-2 and g(x) = 2x + 1, find (f + g)(x).

Answers

Answer:

(f + g)(x) = 7x - 1

Step-by-step explanation:

Given :  f(x) = 5x – 2 and g(x) = 2x + 1

We have to find  (f + g)(x)

Consider  (f + g)(x) = f(x) + g(x)

Also, given  f(x) = 5x – 2 and g(x) = 2x + 1

Substitute, we have,

f(x) + g(x) = 5x - 2 + 2x + 1

LIKE TERMS are terms having same variable with same degree.

Simplify by adding like terms,  we have,

f(x) + g(x) = 5x + 2x - 2  + 1

f(x) + g(x) = 7x  - 1

Thus, (f + g)(x) = 7x - 1

Kathy wants to paint the faces of her standard six-sided die so that each face is either red or blue. However, she does not want all of the faces to be the same color. How many ways are there for Kathy to paint her die?

Answers

Answer:

The number of ways Kathy can paint her die is 52 ways

Step-by-step explanation:

The permutation and combination related question is answered as follows;

The number of faces in the six-sided die = 6

The number of colors available for painting the six-sided die = 2 colors

Therefore, we have, the total number of ways Kathy can paint her die, 'n', given as follows;

n = ₆P₂ + 2₄P₄ + 2₄P₃ + ₄P₂

Where;

₆P₂ = The number of ways of arranging 2 objects in 6 spaces = 30

₄P₄ = The number of ways of arranging 4 objects in 4 spaces = 1

₄P₃ = The number of ways of arranging 3 objects in 4 spaces = 4

₄P₂ = The number of ways of arranging 2 objects in 4 spaces = 12

∴ n = 30 + 2×1 + 2×4 + 12 = 52

The number of ways Kathy can paint her die, n = 52 ways.

Complete the equations so that the solution of the system of equations is (−1, −4). y= ?X−11 6x− ? Y=10

Answers

Answer:

y = –7x – 11

6x – 4y = 10

Step-by-step explanation:

From the question given above, we obtained:

x = –1

y = –4

y = ?x – 11 ....... (1)

6x – ?y = 10b......... (2)

Let the two unknown be a and b. Thus the above equation becomes:

y = ax – 11 ......... (3)

6x – by = 10 .......(4)

Next, we shall determine the value of 'a' and 'b'. This can be obtained as follow:

For a:

y = ax – 11

x = –1

y = –4

–4 = a(–1) – 11

–4 = –a – 11

Collect like terms

–4 + 11 = –a

7 = –a

Multiply through by –1

a = –7

For b:

6x – by = 10

x = –1

y = –4

6(–1) – b(–4) = 10

–6 + 4b = 10

Collect like terms

4b = 10 + 6

4b = 16

Divide both side by 4

b = 16 / 4

b = 4

Finally, we shall substitute the value of a and be into equation 3 and 4 respectively.

y = ax – 11

a = –7

y = –7x – 11

6x – by = 10

b = 4

6x – 4y = 10

Therefore, the complete equation are:

y = –7x – 11

6x – 4y = 10

Pls help will give brainilist

Answers

Answer:

56 cm, 1.8 ft, 20 in

Step-by-step explanation:

plz mark me brainliest. :)

Answer:

56 cm, 1.8 ft, 20 in

Step-by-step explanation:

I just simply turned 1.8 ft and 20 in into centimeters

1.8 ft = 54.9 cm

20 in = 50.8 cm

56 cm = 56 cm

PLEASE HELP BCS MY TEACHER KEEPS POSTING HARD STUFF

Answers

Answer:

My estimate is D:21

Step-by-step explanation:

so sorry this answer will be 75% wrong, let me explain how i got this answer

the perimeter of triangle ADE is 12 units

Triangle ABC looks like 2 times the triangle ADE , 12 + 12 = 24 and the closest answer was D: 21

I hope i helped you in some way!

Answer:

D.21

Step-by-step explanation:

AC=8

AB=8

BC=5

Add all the sides

=21

hola please help i’ll give brainliest but please answer correctly

Answers

Answer:

Step-by-step explanation: 1) 14.5 bc

We have the equation:

43.5 ÷ 3 = 14.500

Calculated to 3 decimal places.

2) They are all the same because they are the same numbers but in different places.

i hope this helps! =3

find the area of the circle with a cirumfererference of 30pi write your solution in terms of pi

Answers

Answer:

225 pi

Step-by-step explanation:

2pi r=30pi

pi r =15pi

pi r2=225pi

225 pi

question is in the pic

Answers

Answer:

B. 68 dollars

Step-by-step explanation:

This option makes the most sense because in hour 2, the profit was 58. In hour 6, the profit was 126. Subtract 126 - 58 to find the rate of change and you get 68.

Hope it helps!

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