Mathematics High School

PLEASE HELP !!!!!!!! What is the equation of the directrix for the following parabola: -8(x-5)=(y+1)^2

a. y=-3
b. x=7
c. y=7
d. x=-3

PLEASE HELP !!!!!!!! What Is The Equation Of The Directrix For The Following Parabola: -8(x-5)=(y+1)^2a.

Answers

Answer 1

Answer:

x=7

Step-by-step explanation:

Answer 2

The directrix of the equation is x=7

What is directrix of parabola?

The directrix of a parabola is a line that is perpendicular to the axis of the parabola. The directrix of the parabola helps in defining the parabola. A parabola represents the locus of a point which is equidistant from a fixed point called the focus and the fixed line called the directrix. The directrix and the focus are equidistant from the vertex of the parabola. Here we define the directrix for the standard equations of a parabola.

The directrix of the parabola y^2 = 4ax, having x-axis as its axis, passes through (-a, 0), and has the equation x + a = 0.The directrix of the parabola y^2 = -4ax, having x-axis, passes through (a, 0), and has the equation x - a = 0.The directrix of the parabola x^2 = 4ay, having y-axis as its axis, passes through (0, -a), and has the equation y + a = 0.The focus of the parabola x^2 = -4ay, having y-axis as its axis, passes through (0, a), and has the equation y - a = 0.

Given:

-8(x-5)=(y+1)²

Now, using the definition of directrix

x= 8/4 +5

x= 2+ 5

x= 7

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Related Questions

I need help with this slope question grade 9

Answers

the slope is NEGATIVE 3/2

The y intercept is simple it is where a point intercepts the y-axis so that is (0,6) and the slope is (y2-y1)/(x2-x1)
(6-0)/(0-4) = 6/-4 = -3/2, so the equation is y=(-3/2)x+6.
Plz give me brainliest answer

What is the slope of line segment betweem the points (-1,-1) and (-2,-4)

Answers

Answer: 3

Step-by-step explanation:

Slope formula: (y2 - y1)/(x2 - x1)

(-4 -(-1))/(-2-(-1)

(-4+1)/(-2+1)

-3/-1

= 3

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Answer:

hope you like my answer its -3

Order these numbers least to greatest 0.7,1.4,3.9,2.2,1.8

Answers

Answer:

0.7, 1.4, 1.8, 2.2, 3.9

Step-by-step explanation:

basic math lol, hope you do well!

Answer:

LEAST TO GREATEST

0.7,1.4,1.8,2.2,3.9

Step-by-step explanation:

0.7= 0.70

1.4

1.8= (1.8-1.4=.4) 1.8 is bigger keep doing this until finally done.

working with bigger numbers in the first place (before the decimal) then find if the number is bigger than that.

Convert to Slope-Intercept Form to graph 3x + 2y = 8.

Answers

Answer:

y= - 3/2x+4 or y= - 1.5x+4

Step-by-step explanation:

Slope Intercept Form: y=mx+b

3x+2y=8

2y= - 3x+8

y= - 3/2x+4 or y= - 1.5x+4

Convert to Slope-Intercept Form to graph 3x + 2y = 8.The Slope : -3/2The y-intercept: y = -3x/2 + 4

What is Slope?
The ratio of how much y grows as x grows by a certain amount is known as a line's slope. The slope of a line indicates how steep it is, or how much y rises as x rises. Anywhere along the line, the slope remains constant (the same).

Solve the equation for y resulting in the y = mx + b
Where,
m = slope
b = the y intercept think b beginning.
3x + 2y = 8
Subtracting 3x both side
3x + 2y - 3x = 8 - 3x2y = 8 - 3x
Dividing both side by 22y/2 = 8/2 - 3x/2y = 4 - 3x/2y = -3x/2 + 4
So, m = -3/2and b = 4

Hence, Slope-intercept is y = -3x/2 + 4

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what is the greatest common factor of 22 and 121​

Answers

Answer:

11

Step-by-step explanation:

three times the sum of the opposite of a number and -7

Answers

correct answer: -3x - 21

The statement three times the sum of the opposite of a number and -7

is 3( - n - 7).

What is a numerical expression?

A numerical expression is a mathematical statement written in the form of numbers and unknown variables. We can form numerical expressions from statements.

Given, Three times the sum of the opposite of a number and -7.

Let the number be 'n' and its opposite number be '-n'.

This statement can be numerically represented as,

3( - n + (- 7)).

= 3( - n - 7).

= - 3n - 21.

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Agatha drives 73 1/2 miles through two towns in 2 1/3 hours. What is her average speed in miles per hour?

Answers

Answer:

31 1/2

Step-by-step explanation:

average speed = distance/time

average speed = (73 1/2 miles)/(2 1/3 hours)

= (147/2 miles)/(7/3 hours)

= 147/2 * 3/7 miles/hour

= 441/14 miles/hour

= 31 1/2 miles/hour

r(x)=2 square root x s(x)=square root x
(rs)(4) =
(r/s)(3)=

Answers

Answer:

rs)(4)=(2rootX)(rootX)

(rs)(4)=2x

(rs)(4)=8

(r/s)(3)=(2rootX)/(rootX)

(r/s)(3)=2

Step-by-step explanation:

Select all the statements that best describe the graph below.

Answers

The Correct choices are :

The independent variable is Months

This is a positive relationship

The relationship is linear

The rate of change is constant

The dependent variable is dollars in savings account

Please help this is due in literally 8 minutes HELP PLEASE!!!

Answers

With what ?
You gotta submit a question or a picture so someone can help

Answer:

There is no question given so how is there an answer?

Step-by-step explanation:

What is the volume, in cubic in, of a rectangular prism with a height of 11in, a width

of 2oin, and a length of 19in?

Answers

Answer:

Rectangular Prism: V = lwh · Surface Area of Rectangular Prism: S = 2(lw + lh + wh) · Space Diagonal of Rectangular ...


What is the slope of the linear function

Answers

Answer: 3/4 because the line runs through the points (0,-2) and (4,1).

rise/run

A town has accumulated 5 inches of snow, and the snow depth is increasing by 6 inches every hour. A nearby town has accumulated 9 inches, and the depth is increasing by 3 inches
every hour. In about how many hours will the snowfall of the towns be equal?

Help please

Answers

Answer:

bro just wondering what the points you like to skin and hair by the trees and shrubs and trees and

Order the fractions from least to greatest. Type the number next to the fraction into the box for the position of the fraction in order.
5/8
1/3
17/24

Answers

Answer:
From least to greatest

1. 17/24
2. 5/8
3. 1/3

Explanation: The fraction with the smaller denominator is the larger fraction

Find x. 1.1 review ANSWERS

Answers

Hello,
The answer is x is 19/6.

what is The expression 12+9g-30h factored using the GCF is and btw I already tryed 3

Answers

Hello!

Answer:

3(4+3g-10h)

Step-by-step explanation:

Hope this helps!

The GCF expression is 12+9g-30h is 3(4 + 3g - 10 h)

what is GCF?

A group of numbers' greatest common factor (GCF) is the biggest factor that all the numbers have in common.

For example, 12, 20, and 24 have two common factors: 2 and 4.

The largest is 4, so we say that the GCF of 12, 20, and 24 is 4.

Given:

12+9g-30h

Now, to find the GCF we have to factorize the numbers

12= 2 x 2  x3

9 = 3 x 3

30= 2x 3 x 5

So, the Greatest common factor is 3.

Thus, the GCF expression is 12+9g-30h is 3(4 + 3g - 10 h)

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Solve the equation. 2/3 -4c+7/2 = -9x+5/6

Answers

Answer:

The value of X is -2/3

Step-by-step explanation:

edge2021

25 hours in 5 days; 8 hours in 2 days are the rates equivalent.

Answers

Answer:

NO

Step-by-step explanation:

25 hours is 5 days is the same as 5 hours per day.  25 ÷ 5 = 5

8 hours in 2 days is the same as 4 hours per day.   8 ÷ 2 = 4

Find the slope and y-intercept of the graph of the linear equation.

y+3=2/3x

Answers

Answer:

Slope: 2/3

y-intercept: -3

Step-by-step explanation:

Subtracting both sides of the equation by 3 to make it in 'y=mx+c' form:

y + 3 - 3 = 2/3x - 3

y = 2/3x - 3

Seeing this,

m = 2/3

c = -3

Since m is the slope, the slope is 2/3

Since c is the y-intercept, the y-intercept is -3

Hope this helps and have a wonderful time ahead at Brainly! :D

cqn your please help this is a graded work​

Answers

I would help but the picture is blurry

Plz help

input the correct Anwser as OS For One Solution, NS for no solution and INF for infinite

Answers

Answer:o

Step-by-step explanation:o

Answer:

1) INF

2) NS

Because:

1 is INF because both sides of the equation are the same

x can be replaced with any number therefor, there are infinite solutions.

2 is NS because you are left with 12=2 so there would not be a solution.

Simplify 3c-9d+7c+5d

Answers

Answer:

10c - 4d

Step-by-step explanation:

Hey there,

Combine like terms

3c - 9d + 7c + 5d

3c + 7c - 9d + 5d

= 10c - 4d

Hope this helps you.

Let me know if you have any other questions :-)

10-ounce package of cashews costs $8.11, and a 16-ounce package of cashews costs $12.
​a. What is the cost per ounce for the 10-ounce package of cashews?
​

​
b. ​What is the cost per ounce for the 16-ounce package of cashews?
​


c. Which package is the better buy?

Answers

Answer:

A. 81 cents per ounce

B. 75 cents per ounce

C. The 16 ounce package would be a better buy.

Step-by-step explanation:

A. 8.11/10 = 0.811

B. 12/16 = 0.75

C. Each ounce is cheaper in the 16 ounce package.

Is this relation a function

Answers

Answer:

true......................

Answer:

True. Hope it helps.

Please mark as brainliest.

Jalen made $533.75 while working at his job. He makes $15.25 an hour, how many hours did he work to make that amount of money?

Answers

Answer:

35 hours

Step-by-step explanation:

Typically, people get their paycheck after 2 weeks.

Let say he worked 8 hours a day, a typical amount of hours for the average human who has a occupation.

Multiply the amount of hours by the amount payed every hour.

So 15.25 x 8 is 122

( so in 8 hours jalen made $122)

Add 8 hours, which would now be 16 hours worked.

16 x 15.25 = 244

(so in 16 hours jalen made $244)

Add another 8 hours of work time which would now be 24 hours (1 full day)

24x5.25=366

Add 10 hours on now which would be 34 hours worked (2 days = 48 hours meaning she worked 1 day and 10 hours )

34x15.25=518.50

(getting closer to the amount she earned)

So if we add another hour

which would be 35 hours worked (1 day 11 hours)

35 x 15.25 = 533.75

Therefore, Jalen worked 35 hours.


2 (-2x + 4) = 2 (-2x + 4)

Answers

0=0

The input is an identity: it is true for all values.

Hope it helps!

Brainliest would be nice but you don’t have to :)

Your checking account has a beginning balance of $68.02. You deposited $169.23 into the account. The next week you spent $31.57
for gas and $25 to go out with friends. How much do you have left in the account?
S212.25
S205.68
$237.25
$180.68

Answers

Answer:

180.68

Step-by-step explanation:

D) $180.68

At the beginning you have 68.02 plus the 169.23 deposit which makes a new total of 237.25.Then you spend 31.57 so the new equation is (237.25-31.57)

which is 205.68 then you spend another 25 for gas (205.68-25=180.68)

So your answer is $180.68

I need help with my homework, its due today

Answers

Answer:

n=-4

The number is -4

Step-by-step explanation:

The equation is (n/2)-9=5+4n

n-18=10+8n

7n=-28

n=-4

What is the correct answer to this problem, in expanded form? 385 + 462

7 hundreds + 14 tens + 7 ones

8 hundreds + 4 tens + 7 ones
HELP

7 hundreds + 4 tens + 7 one

8 hundreds + 14 tens + 7 ones

Answers

Answer:

B, 8 hundreds + 4tens+ 7 ones

Can some pls help. Thank you

Answers

Answer:

39

Step-by-step explanation:

You have a supplementary angle wich is the straight line. Supplementary is equal to 180°. So you would subtract 141° from 180°. 180°-141°=39°.

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