Explain what this student is doing to go from x^2−6x−3= 0 to (x−3)^2 =12

Answers

Answer 1

The student is solving the quadratic equation by completing the square.


Related Questions

A rod with the density sigma(x) = 3 + sin(x) lies on the x-axis between x=0 and x = 3pi/4 find the center of mass of the rod

Answers

Answer:

10.7 grams

Step-by-step explanation:

hey there, again!

this is a similar process the mass is denisty*area HOWEVER keep in mind it's flat so the area is just x deltax while denisity is 3 + sin(x)

mass of rod = integral 0 to 3pi/4 of (3 + sin(x))*x deltax

= integral 0 to 3pi/4 of 3x + xsin(x) deltax

= 0 to 3pi/4 [3/2*x^2 + x(-cos(x)) + sin(x)]

= 10.7 grams

Jesse and Peyton were on scooters jesse traveled 15 in 6 seconds peyton travels 22 meters in 10 seconds who was moving faster? explain your reasoning​

Answers

9514 1404 393

Answer:

  Jesse

Step-by-step explanation:

Jesse's distance in 60 seconds would be ...

  (60 s)(15 m)/(6 s) = 150 m

Peyton's distance in 60 seconds would be ...

  (60 s)(22 m)/(10 s) = 132 m

Jesse travels farther in the same amount of time, so Jesse is moving faster.

__

You might find it simpler just to compute the rate of each.

  Jesse: (15 m)/(6 s) = 2.5 m/s

  Peyton: (22 m)/(10 s) = 2.2 m/s

Jesse's speed is higher.

Maddie loves bananas! So, Maddie bought 15 boxes of bananas. In each box of bananas, there are 32 bananas. How many total bananas did Maddie buy?​

Answers

Answer:

480

Step-by-step explanation:

In each box there is 32. Well, we know there is 15 boxes, so we multiply 32 and 15 to get 480.

She bought 480 total bananas :D

Answer:

She would've eaten 480 bananas

Step-by-step explanation:

help help helplgehiog

Answers

Answer:

23

Step-by-step explanation:

117 - 94 should be the correct answer

What Expression is equivalent to *

-1/2 (4x + 12)

Answers

Answer. -2 (-2x -6)
Explanation. An expression equivalent to -1/3 (4x + 12) would be -2 (-2x - 6) if we solve for both, we find that the answers are the same. let me know if i’m correct so others can use this answer as well :)
good luck.

In a study of the impact of smoking on birth weight, researchers analyze birth weights (in grams) for babies born to 189 women who gave birth in 1989 at a hospital in Massachusetts. In the group, 74 of the women were categorized as smokers and 115 as non-smokers. The difference in the two sample mean birth weights (non-smokers minus smokers) is 281.7 grams and the 95% confidence interval is (76.5, 486.9). Which gives the best interpretation of what we can conclude about the impact of smoking on birth weight

Answers

Answer:

Given:

Total women -  189

Smokers - 74

Non-smokers - 115

The difference in 2 samples mean birth weight = 281.7 grams

95% confident that the mean weight = between 76.5 grams to 486.9  

solution:

The best interpretation would be -

95% confident that the babies of nonsmokers have a mean weight between 76.5 grams to 486.9 grams which is much more than the babies of women smokes by comparing smokers to nonsmokers from given data.

Jeff and Brett both play basketball at the country club. Jeff is a
member, so he pays $64 a month and $2 each times he plays. Brett
is not a member, so he pays $10 each time he plays.
a. After how many visits to the basketball court will Jeff and Brett's
bills be the same amount?

Answers

Answer:

8 times

Step-by-step explanation:

2 x 8 = 16

64 + 16 = 80

10 x 8 = 80

(5a^2 + 3) (4a^2 + 3)

Answers

Answer:

204+272+9

Step-by-step explanation:

A 16-cup carton of ice cream costs $26.72. What is the price per pint?

Answers

Answer:

$3.34

Step-by-step explanation:

Let ​f(x)=x2−16 and ​g(x)=15−x. Perform the composition or operation indicated.
​(fg)(7​)

Answers

Answer:

[tex](2x - 16)(15 - x) \\ (2(7) - 16)(15 - 7) \\ (14 - 16)(8) \\ ( - 2)(8) \\ = - 16[/tex]

estimate 8.2x6.7 divided by 0.46

Answers

Answer:

Well, the correct answer is 119.4347826086956521739130 (after the 130 the whole decimal is repeated.

Step-by-step explanation:

Although if your assignment is asking for an estimate you could probably just say 119 since the first and second decimal is less then 5

The estimation of the expression 8.2 × 6.7 divided by 0.46 is approximately 112.

What is estimation?

It is a rough calculation of the value, number, quantity, etc. It doesn't use real calculation but estimation by some method like prediction, using approximation etc.

For this case, we've to esimate the value of the expression:

[tex]E = \dfrac{8.2 \times 6.7}{0.46}[/tex]

Instead of using exact values, let we use:

[tex]8.2 \approx 8\\6.7 \approx 7\\0.46 \approx 0.5 = 1/2[/tex]

Then, we get:

[tex]E = \dfrac{8.2 \times 6.7}{0.46} \approx \dfrac{8 \times 7}{1/2} = 2 \times 8 \times 7= 2 \times 56 = 112[/tex]

Thus, the estimation of the expression 8.2 × 6.7 divided by 0.46 is approximately 112.

Learn more about estimation here:

https://brainly.com/question/6844110

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An elevator rises steadily up a skyscraper. After 4 s it is 33 m above the ground, 2 s later it is 47 m above the ground. Which equation models its position, y, with respect to time, x?

A. y-47= -7(x-2)
B. y+33=7(x+4)
C. y-33= -7(x-4)
D. y-33=7(x-4)

Answers

Answer:

C

Step-by-step explanation:

It would be c i took the test:)

The required equation model would be y - 33 = -7(x -4) which is the correct answer would be option (C).

What is the slope of the line?

A line's slope is defined as its inclination. It is denoted by m

Slope m = (y₂ - y₁)/(x₂ -x₁ )

Consider Points 1 and 2 on a line. Point 1's coordinates are (x₁ , y₁), and Point 2's coordinates are (x₂, y₂).

Given that the continuously rising building is an elevator. It is 33 meters above the ground after 4 seconds, and 47 meters above the earth after 2 seconds.

Let the required equation model would be as:

y - y₁ = (y₂ - y₁)/(x₂ -x₁ )[x₂ -x]

x₁ = 4, y₁ = 33

x₂ = 2, y₂ = 47

⇒ y - y₁ = (y₂ - y₁)/(x₂ -x₁ )[x₂ -x]

Substitute values in the equation, we get

⇒ y - 33 = (47-33)/(2-4 )[x -4]

⇒ y - 33 = 14/(-2 )[x -4]

⇒ y - 33 = -7(x -4)

Therefore, the equation model is y - 33 = -7(x -4).

Learn more about Slope of the Line here:

brainly.com/question/14511992

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What is the interquartile range of the following data set?
37, 27, 48, 96, 61, 84, 29, 1, 72, 5, 34
A. 64
B. 37
C. 10
D. 45

Answers

Answer:

The answer is D, 45.

Step-by-step explanation:

How to find the Interquartile Range

Order the data from least to greatest.Find the median.Calculate the median of both the lower and upper half of the data.The interquartile range is the difference between the upper and lower medians.

After doing that, write out your list, and and subtract the medians to get 45.

Answer:

D

Step-by-step explanation:

Quadrilateral PQRS is transformed by translating it 6 units to the right and then rotating it 90° clockwise
about the origin. Which coordinate pairs represent vertices of P'Q'R'S' after these two transformations?

Answers

Answer:

(y, -x -6)

Step-by-step explanation:

The coordinates of PQRS is not given, however we'll assume the coordinates of PQRS to be (x,y)

The first transformation: 6 units right

[tex](x,y) -> (x + b, y)[/tex]

Where b = 6

So, the new coordinates will be

[tex](x + 6, y)[/tex]

The second transformation: 90° clockwise

[tex](x,y) -> (y,-x)[/tex]

So, the new coordinates will be

[tex](x + 6, y)-> (y, -x -6)[/tex]

Hence, the new coordinates of PQRS is (y, -x - 6)

Number 9 please is each triangle a right triangle? EXPLAIN

Answers

It is not because a right triangle needs one right angle, and a right angle is 90 degrees

Step-by-step explanation:

Answer:

A right triangle is a triangle in which one of the angles is a 90∘ angle.

Step-by-step explanation:

The "square" at the vertex of the angle indicates that it is 90 degrees. A triangle can be determined to be a right triangle if the side lengths are known. If the lengths satisfy the Pythagorean Theorem (a2+b2=c2) then it is a right triangle.

the riding lawn mower that alejandro has on his farm has the top speed of 8 km/h. What is a lawn mowers top speed in meters per hour?

Answers

Answer:

Step-by-step explanation:

800

Answer:

oh we late

Step-by-step explanation:

the student council is selling a dozen donuts for $15. what is the unit cost?

Answers

Answer:

$1.25

Step-by-step explanation:

15 divided by a dozen (12) is 1.25

Have a great day!

Answer:

$1.25.

Step-by-step explanation:

15/12 = $1.25

Is this nonlinear?













S

Answers

Answer: it seems to be Liner

Step-by-step explanation:

Has a Constant rate

Divide: r^2/r^12 A. r^10 B. 1/r^6 C. 1/r^8 D. r^8 E. r^6

Answers

Answer:

A. r^10

Step-by-step explanation:

r^2/r^12

1/r^-10

r^10

Show that (3m+4n)2 –48mn= (3m-4n)2

Answers

Answer:

Please see the attached picture.

1. The sum of the angle measures in a triangle is 180°. Two angles of a triangle measure 20° and 50°. What is the measure of the third angle?

Answers

Dude cmon. Just add 20 and 50 to get 70. Then do 180-70 = 110. 4th grade math

A bird goes from a higher location to a lower location at a
rate of 3 meters per second.
Which equation models the change in the bird's position at 120 seconds?

Answers

Answer:

The answer is 120(-3)= -360

Step-by-step explanation:

Apex Learning!

So the answer is the NEGATIVE 360!!

Answer:

120(-3)=-360

Step-by-step explanation:

La representacion algebraica de 8 menos que cinco veces un numero es

Answers

Responder:

Tu ecuación debería verse así, 5⋅n − 8

Explicación paso a paso:

No se puede hacer nada más con este tema. Verifique la expresión ingresada o pruebe con otro tema.

68,347 rounded tp the nearest hundred​

Answers

68,309 one hundred percent sure

3/4 a - q = k, solve for a

Answers

Answer: a = 4k + 4q ÷ 3

Step-by-step explanation:

The scatterplot shows the relationship between the number of slices of pizza eaten by each member of a football team (x) and the number of laps around the block the player could run immediately afterward (y). The equation of the regression line shown on the graph is y = 10 – 0.67x:
Use the equation above to predict the number of laps a player who ate 7 slices can run.

Answers

Answer:

5.31

Step-by-step explanation:

Given the regression line equation, [tex] y = 10 - 0.67x [/tex], where,

x = number of slices of pizza eaten

y = number of laps run immediately

Number of laps run by a player who ate 7 slices of pizza can be predicted by plugging in x = 7 into the regression line equation to find y:

[tex] y = 10 - 0.67x [/tex]

[tex] y = 10 - 0.67(7) [/tex]

[tex] y = 10 - 4.69 [/tex]

[tex] y = 5.31 [/tex]

7 What is the unit rate of miles to gallons?

Answers

  Example           Rate               Read 68 miles in 1 hour      68 miles1 hour         68 miles per hour 36 miles to 1 gallon    36 miles1 gallon     36 miles per gallon

Hope this helps!

if there ar 10 people in the bus
and 5 get off
and 40 more come in
total people in the bus can be only 30
is the number people in bus more than toatal people or less

Answers

Answer:

no there are more people than total people

Step-by-step explanation:

10 - 5 + 40 = 45

45 is frater than 30

hence there are more people than total

How can I solve 7y + (-5y)

Answers

It’s just addition 2y is the answer

Answer: 2y

Step-by-step explanation:

Adding a negative number is the same as subtracting by that number. In this case,

7y + (-5y)

is equal to

7y - 5y

feel relax and free to ask me any math related question.​

Answers

Whats 18372x372882 ?
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