A parabola with a vertex at (0,0) has a directrix that crosses the negative part of the y-axis.
Which could be the equation of the parabola?
A. x² = –4y
B. x² = 4y
c.y² = 4x
D.y² = –4x

Answers

Answer 1

Answer:

A parabola can be represented by the equation x2 = -20y. ... (0,-2). The directrix of the parabola is represented by y = 2. ... A parabola, with its vertex at (0,0), has a focus on the negative part of the y-axis. ... The directrix will cross through the positive part of the y-axis. ... Which graph represents the equation y2 = -4x? A ...

Step-by-step explanation:

yeiii


Related Questions

How many cubic inches is 18 inches

Answers

Answer:

5832 cubic inches

Which number is located between 19 and 20 on a number line?
A. √298
B. √340
C.√ 391
D. √ 402

Answers

Answer:

C. 391

Step-by-step explanation:

The number located between 19 and 20 is, C.√ 391

What are surds and indices?

We know there are two types of radicals one is surds when the number has been raised by such power that it is greater than zero and less than one,

The other type of radicals are indices where a number is raised to such power that is greater than one.

We know, √400 is 20.

Given, We have to find an irrational number between 19 and 20.

Now, From the given options the closest number to √400 is √402 but it is not between 19 and 20.

Therefore, The number whose square root is between 19 and 20 is,

√ 391.

learn more about surds and indices here :

https://brainly.com/question/1369233

#SPJ3

Find (a) the circumference and (b) the area of the circle. Use $3.14$ or $\frac{22}{7}$
for $\pi$ . Round your answer to the nearest whole number, if necessary.

Answers

i think it’s 3.14!!! LOLLALALALLALA

Find the solution of the system of equations.
10x – 2y = 18
-10x + 9y = -46

Answers

Answer:

x=1, y=-4. (1, -4).

Step-by-step explanation:

10x-2y=18

-10x+9y=-46

------------------

7y=-28

y=-28/7

y=-4

10x-2(-4)=18

10x+8=18

10x=18-8

10x=10

x=10/10

x=1

-7 hope this helps, i did this a couple days ago and it was right

Please answer correctly! I will Mark you as Brainliest!

Answers

Answer:

the answer is 40.5!

Step-by-step explanation:

First, you have to add all of the numbers up!

Taylah buys clothes from a supplier in the USA. The total cost of the clothes is $250 US dollars. Shipping the clothes costs an extra $30 US dollars.On arrival in Canadian customs add an extra 10% GST to the cost of the clothes. Calculate how much Taylah has to pay in total.


If u know the answer plz answer if u don't know the answer,don't answer! -Warning

Answers

Yo estoy muy bien y tu noentiendo lo que describirte no hablo ingle pero ponerlo en el español yu te edito cual es la pregunta por fa

Nothing crazy here. Solve 1 step inequalities with addition and subtraction the same way you would solve an equation.


isolate the variable by performing the opposite operation to both sides

Answers

Answer:

hey, what exactly is your question? i don't really get it.

Step-by-step explanation:

Which is​ greater, 4 miles or 7,000 yards ​? How much​ greater? Explain.

Answers

Answer:

4 miles is greater.

Step-by-step explanation:

When we convert 4 miles to yards, we get 7,040.  Therefore, when we look at the amount, we can see that 7,040 is greater than 7,000.

Can someone please help?

Answers

1- highest was 98 lowest was 74!

Answer:

1: The highest score is 98, the lowest score is 74.

2: 55% of the scores are greater than 84

Step-by-step explanation:

Solution 1-1:

Starting from the top left and going from left to right row by row we compare the largest number we come across with the current number we are inspecting.

Starting with 92 then we look at 88, 92 is greater than 88 so we keep 92, next is 95, 95 is greater than 92 so we keep 95, next is 74, 95 is greater than 74 so we keep 95 and so on until we have compared all of the numbers. We are left with 98

Solution 1-2:

Using a similar method to finding the greatest number we go through the list of numbers in search of the smallest number. Starting with 92 we then look at 88, 88 is less than 92 so we keep 88. Next is 95, 88 is less than 95 so we keep 88. Then 74, 74 is less than 88 so we keep 74 and so on. We are left with 74

Solution 2:

There is a total of 20 numbers in the table. By comparing the numbers in the table to 84, we can determine that 11 numbers are greater than 84.

By dividing 11 by 20 we get 0.55 which is equal to 55%

Which expression is equivalent to: 4x - 2 + 6x
a- 10x - 2
b- 2x - 2
C- - 2x - 2
d- 24x - 2

Answers

You add the like terms which are 4x and 6x
4x + 6x= 10x

10x-2 Which is choice A

Answer:

a. 10x - 2

Step-by-step explanation:

4x - 2 +6x ( collect like terms )

4x +6x - 2

10x - 2

I need help!! asap angles ​

Answers

Answer:

i do not know

Step-by-step explanation:

ummmmmmmmm x = well you see you have to solve for x mmmmmm hhhhhhmmmmm yup

I hope the answer is helpful

7th grade math help me pleaseee

Answers

Answer:

14x + 6

step by step explanation:

Marisol went to a hair salon for a haircut. The hair stylist cut off 3 inches of her hair. The length of her hair is now 11 inches. Let b represent the length of her hair before she went to the salon. Which of the following represents an equality between two different ways of expressing the length of Marisol's hair now?
A.b-3=11 B.b=11 C.b+3=11 D. 11b=3

Answers

Answer:

C

Step-by-step explanation:

Answer:

The answer is A

Step-by-step explanation: took it on times4learning math assignment

please halp!!!!!!!!!!!!!!

Answers

Answer:

132 degrees

Step-by-step explanation:

360 - 65 - 86 -77

The scatter plot shows the number of hours worked and money soent on etnertainment by each of 25 students . Also shown is tbe ljne of best fit for the data fill in the blanks below

Answers

Answer:

Follows are the responses to the given question:

Step-by-step explanation:

Please find the attached file for the complete question:

For point A:

The amount of money being spent appears to rise for those 25 students as the number of hours increases. This is evident from the plot of scattering as well as the best line.

For point B:

Its number of hours spent as well as the amount of money spent were also positive for such 25 students.

For point C:

Also with a line that fits best, we will indeed predict that only an 8-hour student would spend about $22.

All these are seen in a direct line drawn from the x-axis where x=8 fits this same best line and a horizontal line is drawn between that axis and the Y-axis is drawn.

Find the volume, in cubic inches, of a right rectangular prism with the measurements below. Length: 3/2" Width: 5/2" Height: 4

Answers

Answer:

Step-by-step explanation:

The volume of a rectangular prism can be calculated by multiplying the area of its base by its height.

Mathematically, we have

The volume of prism = base area X  height

At this point, it is important to note that a rectangular prism is a solid shape that has its base as a rectangle; so the area of its base, is the same thing as the area of a rectangle.

Where base area = length X breadth

hence, volume = length X breadth X height

volume = 3/2 X 5/2 X 4 = 15 cubic inches

Let x and y be inversely related. If x is 5 when y
is 6, find y when x is 3.

Answers

Answer:

y=10

Step-by-step explanation:

x=k/y

constant of proportionality

k=xy

k=5*6

k=30

therefore x=30/y

if x=3 y=?

y=30/3

y= 10

please please help me!!!!!!!

Answers

Answer:

d

Step-by-step explanation:

Hope this helps! Good luck!

If all the angles are equivalent (the same), the angles must each be 60 degrees because 60 times 3 angles equals 180.

A. True
B. False

Answers

Answer: A

Step-by-step explanation: true true true

You invest $500 in an account that pays 6% interest compounded continuously. How
much will be in the account after 6 years?

Answers

Answer:  716.66 dollars

=====================================================

Explanation:

We'll apply this formula

A = P*e^(r*t)

where,

A = account balance after t yearsP = initial deposit, aka principale = special constant roughly equal to 2.718 but it goes on forever without a pattern; it's better to let the calculator handle this value rather than type the decimal digits in.r = annual interest rate in decimal formt = number of years

In this case, we have

P = 500r = 0.06t = 6

Again we won't type "2.718..." for 'e', and we'll just type it into the calculator as shown below. That way the calculator can handle the digits instead.

So...

A = P*e^(r*t)

A = 500*e^(0.06*6)

A = 716.66470728026

A = 716.66 dollars is the final answer

Malik bought a pack of erasers for $3.50 and some pencils for $0.99 each. He paid a total of $10.43. Which equation can be used to find the number of pencils Andrew bought? \

Answers

Answer:

The equation that can be used to find the number of pencils Andrew bought is:

x=(c-3.50)/0.99

Step-by-step explanation:

With the information provided, you can say that the total amount paid would be equal to the price of the pack of erasers plus the price per pencil for the number of pencils purchased, which can be expressed as:

c=3.50+0.99x, where:

c is the total cost

x is he number of pencils purchased

Now, you can solve for x in order to find the equation to calculate the number of pencils Andrew bought:

c-3.50=0.99x

x=(c-3.50)/0.99

According to this, the answer is that the equation that can be used to find the number of pencils Andrew bought is:

x=(c-3.50)/0.99

Help me please an thanks

Answers

Answer:

4.6

Step-by-step explanation:

2^2+x^2=5^2

4+x^2=25

x^2=25-4

x^2=21

x=square root 21

x=4.58=4.6

Find the height of a parallelogram with an area off 41 square meters and a base of 8.2 meters. Include the measurement of the shape. First to get it right gets brainliest

Answers

Answer:

I'm go take 8.2 subtract by 41 and I got 32.8

Step-by-step explanation:

Simplify 16x^7 y^4z/8x^4 y^3 z^3

Answers

You would get the answer

2x^3/z^2

4y+ 3x= 20
is this simplified properly?
Thank you :)

Answers

I think so sorry if I’m wrong :(

Answer:

Is correct , like A= 4 B=3 C=20

What is the surface area?​

Answers

Answer:

The total area is 685

Step-by-step explanation:

First get the area of the square; the area of the square is the height times the width. Because its a square all of its sides are equal, 15 times 15 equals 225. Next we go to figuring out the triangles´ area; the formula to figure out a triangles area is 0.5 times height times width. Because there are 4 of the exact same triangles we only have to figure out one and we have the area for each of them. 0.5 times 20 times 15 equals 115, with that information we are able to obtain all the information we need to discover the total area.

The area of the square: 225

The area of each of the triangles: 115

If there are 4 exact triangles of 115 then that equals all the triangles together to be 460, then add the square 460 plus 225 equals 685.

Hope this helps!!

The diameter of a hula hoop is 36 inches. Find the area enclosed by the hoop in sq. inches.

Answers

2.25 sq inches is what you should get.

write an equation for a function that has vertical asymptotes at x=3 & x=-10

Answers

Answer:

[tex] \frac{5}{ {x}^{2} + 7x - 30} [/tex]

Step-by-step explanation:

We can write a rational function.

We need to make sure our denominator both have zeroes at 3 and 10.

Set an equation equal to zero to find the function

[tex]0 - x = 3[/tex]

[tex]0 - x = - 10[/tex]

[tex]0 - ( - 3) = = 3[/tex]

[tex]0 - 10 = 10[/tex]

So we would represent that's as

[tex]x - 3[/tex]

and

[tex]x + 10[/tex]

Multiply the two binomial together.

[tex](x - 3)(x + 10) = {x}^{2} + 7x - 30[/tex]

Let our numbetator be any interger.

Use any equation as long as the quadratic is the denominator and the interger is the numerator.

[tex] \frac{5}{ {x}^{2} + 7x - 30 } [/tex]

Solve this quadratic equation

Answers

Answer:

https://www.symbolab.com/solver/step-by-step/x%5E%7B2%7D%20%2B5x%2B3%3D0

Step-by-step explanation:

Answer:

[tex]x = \frac{-5\pm\sqrt{13}}{2}[/tex]

Step-by-step explanation:

Hello!

We can solve the quadratic by using the Quadratic Formula.

Standard form of a Quadratic: [tex]ax^2 + bx +c= 0[/tex]

Quadratic Formula: [tex]x = \frac{-b\pm\sqrt{b^2 - 4ac}}{2a}[/tex]

Given our equation: [tex]x^2+5x+3 = 0[/tex]

a = 1b = 5c = 3

Plug it into the formula and solve:

[tex]x = \frac{-b\pm\sqrt{b^2 - 4ac}}{2a}[/tex][tex]x = \frac{-5\pm\sqrt{5^2 - 4(1)(3)}}{2(1)}[/tex][tex]x = \frac{-5\pm\sqrt{25-12}}{2}[/tex][tex]x = \frac{-5\pm\sqrt{13}}{2}[/tex]

This cannot be simplified further. The answer is [tex]x = \frac{-5\pm\sqrt{13}}{2}[/tex].

Jennifer was baking cupcakes for her class. She needed to bake 35 cupcakes in all. Each cupcake needed .13 cups of sugar. How many cups of sugar will she need in order to make the 35 cupcakes?

Answers

Answer and working out attached below. Hope it helps
Other Questions
3. All the following are global processes that can cause sea level change except which one?a. Input of freshwater to oceans from melting continental ice sheets at the polesb. Expansion of water from increasing ocean temperaturesC. Changes in the rate of seafloor spreadingd. Currents, storms, and changes in atmospheric pressure In the free enterprise system, or market economy, individuals are responsible forbeing informed and making careful decisions.True of False Marine biologists are studying stickleback fish populations. There are two distinct variations in the sticklebacks based on phenotypes. They are found with the three spines more commonly in marine ecosystems while they are more commonly found without the three spines in freshwater ecosystems. This has been observed in many marine and freshwater ecosystems across the globe. What explains the variation seen in the image here across different aquatic ecosystems? help me pleaseeeeeeeeeeeeeeeeeeeeeeeee The continuous changing of rocks from one kind to another is called:Question 5 options:MetamorphosisExtrusionThe carbon cycleThe rock cycle Clark Company estimated the net realizable value of its accounts receivable as of December 31, 2019, to be $170,000, based on an aging schedule of accounts receivable. Clark has also provided the following information: The accounts receivable balance on December 31, 2019 was $181,000. Uncollectible accounts receivable written off during 2019 totaled $12,500. The allowance for doubtful accounts balance on January 1, 2019 was $16,000. How much is Clark's 2019 bad debt expense A canoe rental company charges $6 for the first hour and $5 for each additional hour.Which equation can be used to determine y, the total cost of renting a canoe for x hours?A y = 5x + 1B y = 5x + 5C y = 6x - 1D y = 6x +5 Gelatinization happens with what type of Carbohydrate? The North and south transportation differences In a video game a centipede follows a path that can be particularly modeled by the function f(x)=x(x-5)(x-3) what are the zeros of this function Schedule of Cash Payments Tadpole Learning Systems Inc. was organized on February 28. Projected selling and administrative expenses for each of the first three months of operations are as follows: March $120,000 April 140,000 May 160,000 Depreciation, insurance, and property taxes represent $10,000 of the estimated monthly expenses. The annual insurance premium was paid on February 28, and property taxes for the year will be paid in November. Seventy percent of the remainder of the expenses are expected to be paid in the month in which they are incurred, with the balance to be paid in the following month. Prepare a schedule indicating cash payments for selling and administrative expenses for March, April, and May. Enter all amounts as positive numbers. 2. What is the slope in this equation? y =2x +1y2 1 Who studied Copernicus and Galileo during the Scientific Revolution?Sir Isaac NewtonJohannes KeplerRene DescartesSir Francis Bacon Solve the equation. 2cos2(x+30)=1 for 0x360 which number line best represents the solution to the inequality 3.3w - 9 > -22.27Plz answer hurry who ever gets this right will get a brainlest. This is the outsiders A conflict in the State of Kansas where pro and anti slave groups were killing eachother was calledbleeding KansasKansas - Nebraska ActThe Civil WarO the slave act 6. PLEASE HELP! Ill mark brainliest plssss help me asap use multiplication to solve the proportions answer and give proof and ill give brainliest