What is the directrix of a parabola with equation x^2 = 4y

Answers

Answer 1

Answer:

y = -1

Step-by-step explanation:


Related Questions


What is the volume of the rectangular prism?
A. 384 cm
6 cm
B. 96 cm3
4 cm
C. 26 cm
16 cm
D. 24 cm

Answers

Answer:B

Step-by-step explanation:

Answer: A: 384cm^3

Step-by-step explanation:

L•W•H=

PLEASE HELP!!!!By making minimum payments on a credit card, the consumer can A) avoid paying late fees B)pay off the balance quicker C)lessen the total amount owed D)avoid paying compounding interest

Answers

the answer is A).

Step-by-step explanation:

..........................

Answer:

I think B. I'm not sure though because i'm only 13 :(

The point (-2, -3) is on a circle that has center (-2,6). Find the length of the diameter of the circle.

Answers

Answer:

18

Step-by-step explanation:

√(-2 - -2)² + (6 - -3)² = 9 = radius

diameter = 2r = 18

im too lazy to answer my sister questions (its easy but I got something else to do) do all multiplication all way to 12

Answers

Answer:

All of the multiplications are in the image attached

Step-by-step explanation:

please mark me brainliest :)

Please mark me brainliest and I hope this helps ( I spent a lot of time on this...)!

I wrote this all out on a google doc so no, I did not copy it from the internet:

-2/3a-6=12 what does a equal a=?

Answers

Answer:

a= -27

Step-by-step explanation:

The other answer I had was wrong so..

// have a great day //

Answer:

-2/3 a - 6 = 12

+6                 +6

-2/3 a = 18

divide by -2/3 on both sides

a = -27.00027

Step-by-step explanation:

CHECK

-2/3 (  -27.00027) -6 = 12

18.00018 -6 = 12

12.00018 about 12  SO YES ITS CORRECT

PLEASE HELP URGENT!!
Examine the following graph,where a horizontal dilation maps p(x) to I(x)

Answers

Answer:

D) a horizontal stretch

Step-by-step explanation:

"A horizontal stretching is the stretching of the graph away from the y-axis. A horizontal compression (or shrinking) is the squeezing of the graph toward the y-axis." Quoted from mathbitsnotebook.com.

A triangle is sitting on a horizontal line. The bottom left interior angle of the triangle is (9 + k) degrees. The exterior angle to the bottom left interior angle is (5 k minus 3) degrees.
What is the value of k?

k = 28
k = 29
k = 31
k = 42

Answers

Answer:

29

Step-by-step explanation:

If you mean the exterior angle at the same vertex as the interior,

(9+k)+(5k-3)=180

9+k+5k-3=180

6k+6=180

6k=174

k=29 degrees

Answer:

29

Step-by-step explanation:

Is the decimal 0.888. . . rational or irrational? If it is rational, write it as a fraction. If it is irrational, explain why.

Answers

Answer:

It is irrational because a rational number expressed as the quotient or fraction  of two integers

Step-by-step explanation:


The shape has an area of 60 square inches. Find the value of x.

Answers

Answer:

5 inches

Step-by-step explanation:

A=bh

A=bx

60=12x

12x=60

x=5

Answer:

x = 5 In.

Step-by-step explanation:

The area of a parellelogram is usually basically the same as that of a rectangle or square. So the equation for the area of this parellogram is 60/12.

That would give you 5 which makes x equal to 5 inches.

Pointssss
Emma purchased a refrigerator for $1,450. It depreciates about 0.8% each year. What is the
value of the refrigerator after five years?

Answers

Answer:

This might be the answer not sure

Step-by-step explanation:

if it goes down 0.8 % every year it would be 1392

this is what I did 1,450−0.8%−0.8%−0.8%−0.8%

−0.8% I did -0.8% for every year i did 5 times for 5 years

so that the value but if u want the really accurate one then the answer is 1,392.9206056485 i hate myself for doing that but yeah thats it

A typical dove weighs 345g. A typical duck weighs 1.2kg. What is the difference, in grams, of the weights of a duck and a dove?

Answers

Answer:

855 grams

Step-by-step explanation:

First convert the 1.2kg into grams.

1.2kg=1200 grams.

Now we have equal units of measurement. We then subtract: 1200g-345g=855g

PLS HELP!! IT"S DUE SOON! An iron bar that weighs 2 1/4 lb. is cut into smaller bars that weigh 6 ounces each. How many smaller bars are there?

Answers

There are 6 smaller bars

Explanation: 2 1/4 lb. to ounces is 36 ounces. Divide it by 6 and it makes 6 smaller bars.

Answer:

There are 6 smaller bars

question 3 <><><><><><><><><><><>

Answers

Answer: C. none of the above

Step-by-step explanation:

Because you are dealing with a positive and a negative number here, the only way you would be able to get a positive number out of both would be if you squared both of the numbers in parentheses. (grab a calculator and try it if you have one)

(6)^2 and (-6)^2 both give you 36.

And, 6)^3 and (-6)^3 both give you 216.

But, because there are no parentheses in the equation, then the answers would be different, so the correct answer is none of the above.

How many times larger is 5 × 10 to the power of 6 than 5 × 10 to the power of 2?

Answers

Answer:

10,000

Step-by-step explanation:

The bases of the scientific notation are the same, so the answer must be a base of 10. So you just divide [tex]10^{6}[/tex] and [tex]10^{2}[/tex], you should get [tex]10^{4}[/tex], which is equal to 10,000.

10,000 because you just need to work them out then subtract

The sum of the numbers 120. The third number is 4 times the second. The first number is 6 less than the second. What are the numbers?

Answers

Answer:

First number: 15

Second number: 21

Third number: 84

Step-by-step explanation:


Y=4x + 6
Y = 6x - 12

Solve the systems of equation by substitution

Answers

Answer:

x=9, y=42

Step-by-step explanation:

y=4x+6

y=6x-12

Substitute the second equation into the first:

6x-12=4x+6

Subtract 4x from both sides:

2x-12=6

Add 12 to both sides:

2x=18

Divide both sides by 2:

x=9

Plug this back into one of the equations to find y:

y=4(9)+6=36+6=42

Hope this helps!

Find the function that represents the relationship in the table

a)

y = 14x + 14


b)

y = 8x + 14


c)

y = 8x


d)

y = 14x + 8

Answers

Answer:

option B

Step-by-step explanation:

when the x value is multiplied by 8 and the result is added to 14 you will get the corresponding y value

What is the relationship between the diameter and the circumference of a circle?
A. Diameter is about 2x the circumference.
B. Circumference is about 2x the diameter.*** My choice.
C. Diameter is about 3x the circumference
D. Circumference is about 3x the diameter.

Answers

Answer:

Thje answer is D.

Step-by-step explanation:

The circumference is always 22/7 times longer (about 3.14)

Identify an equation in point-slope form for the line parallel to y -
passes through (4.-5).
*+ 8 that
O A. y-5--3(x+4
O B. y-t-ix+5)
O C. y+5=(x-4)
O D. y-5--3(x-4)
SUBMIT
Helppp

Answers

I think it’s D but I’m not sure

Simplify.
(3.8w+ 4) – 1.5w+8
2.3 w+ 12
5.3 w+ 12
2.3 w-12
5.3 w-12

Answers

Answer:

2.3w +12

Step-by-step explanation:

(3.8w+ 4) – 1.5w+8

Combine like terms

3.8w-1.5w   +4+8

2.3w +12

Answer:

2.3w+12

Step-by-step explanation:

Parentheses do not matter for this question.

(3.8w+ 4)–1.5w+8=

3.8w+4-1.5w+8=

Subtract 1.5w from 3.8w

2.3w+4+8=

Add 4 and 8 together

2.3w+12

Which of the following represents 1 < x <_ 6

a. [1/6]
b. (1,6]
c. (1,6)
d.[1,6)

Answers

Answer:

The correct answer is

b.(1,6]

y=a(x-r)(x-s) what is a and r and s ?

Answers

Answer:  

The constant a is the scale factor on the parabola; positive a makes a CUP (concave up), which is the usual orientation.  Negative a makes an upside-down parabola.  Big a (in absolute value) makes a skinny parabola, small a a wider one.

r and s are the zeros of the quadratic function, the values of x that give y=0.

Answer:

a , r, s , x all are variables

A die is rolled. Match the events mentioned in the first column with their corresponding probability.

Answers

Answer:

Step-by-step explanation:

a number greater than 5 - 1/6

a prime number - 1/2

a number greater than 4 - 1/3

a number less than 6 - 5/6

pls help need this done as soon as possible

Answers

The correct answer is answer c or 806cm squared :)

A = {1, 2, 5, 7} B = {3, 4, 6, 7} C = {0, 5, 8, 9} Find A∩B. A) {1,2,3,4,5,6,7} B) {1} C) {2,3,4,5} D) {7}

Answers

Answer:

The answer is option D.

A n B is { 7 }

Hope this helps.

Why can you use cross products to solve the proportion StartFraction 18 over 5 EndFraction = StartFraction x over 100 EndFraction for x?

because 18 times 100 is equal to 5 times x, which means that x is equal to 36

because 18 times 100 is equal to 5 times x, which means that x is equal to 360

because 18 times x is equal to 5 times 100, which means that x is equal to 36

because 18 times x is equal to 5 times 100, which means that x is equal to 360

Answers

Answer:

because 18 times 100 is equal to 5 times x, which means that x is equal to 360

Step-by-step explanation:

18/5=x/100

Cross product

18*100=5*x

1800=5x

x=1800/5

x=360

because 18 times 100 is equal to 5 times x, which means that x is equal to 360

Answer:

b

Step-by-step explanation:

Find the value of x in the given figure using properties of parallel lines. answers : A) 27° B) 18° C) 36° D) 54°

Answers

Answer:

[tex]\mathrm{B}[/tex]

Step-by-step explanation:

[tex]126+3x=180[/tex]

[tex]3x=180-126[/tex]

[tex]3x=54[/tex]

[tex]\frac{3x}{3}=\frac{54}{3}[/tex]

[tex]x=18[/tex]

Answer:

[tex]x = 18[/tex]

Step-by-step explanation:

Co - interior angles = 180°

[tex]3x + 126 = 180 \\ 3x = 180 - 126 \\ 3x = 54 \\ \frac{3x}{3} = \frac{54}{3} \\ x = 18[/tex]

State the main principle of solving equations

Answers

Answer:

The main principle of solving equations is to find the unknown value

Step-by-step explanation:

For example:

 [tex]x + 3 = 6[/tex]

     [tex]-3=-3[/tex]

       [tex]x=3[/tex]

I hope this helps

Answer:

The fundamental principle of equation solving is based on the fact that after applying the same operation on both sides of the equation the solutions of the original equation are also solutions of the new equation.

Step-by-step explanation:

the sum of two rational numbers will always be

Answers

The sum of two rational numbers will always be rational

[tex]\frac{a}{b} +\frac{c}{d} =\frac{ad+bc}{bd}[/tex], therefore it will always be rational

Simplify the following expression.
11 - X 7

Answers

Answer:

11-7x  its already simplified

by-step explanation:

multiply

To compute a product; to perform a multiplication.

This is already simplified as can be
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