1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
romanna [79]
3 years ago
8

Giving 90 points please

Mathematics
2 answers:
tatuchka [14]3 years ago
4 0

Answer:

It's matched left by right side. Steps are not in order!

Step-by-step explanation:

1. Square both sides and simplify

2. Find the distance between the focus and the point on the parabola

3. Choose a point on the parabola

4. Write the equation of the parabola

5. Set the distance from focus to the point equal to the distance from directrix

to the point

6. Find the distance from the point on the parabola to the directrix

Alina [70]3 years ago
4 0

Step-by-step explanation:

<u>Step 1:  Answer question 1</u>

<u />(x + 1)^2 + (y + 8.75)^2 = (y + 9.25)^2

        x^2 + 2x + 1 = 2y + 9

What we are doing in this problem, is that we are squaring both sides in order to help simplify.  Number 1 has the second option or B.

<u>Step 2:  Answer question 2</u>

<u />\sqrt{(x + 1)^2 + (y + 8.75)^2}<u />

What we are doing is that we are finding the distance from the point on the parabola to the directrix.  Number 2 has the last option or F.

<u>Step 3:  Answer question 3</u>

Use (x, y)

What we are doing is that we are finding a point on a parabola.  Number 3 has the fifth option or E.

<u>Step 4:  Answer question 4</u>

<u />y = \frac{1}{2}x^2 + x - 4<u />

What we are doing is that we are writing the equation of the parabola.  Number 4 has the third option or C.

<u>Step 5:  Answer question 5</u>

<u />\sqrt{(x + 1)^2 + (y + 8.75)^2} = \sqrt{(y + 9.25)^2}

What we are doing is that we are setting the distance from focus to the point equal to the distance from directrix.  Number 5 has the first option or A.

<u>Step 6:  Answer question 6</u>

<u />\sqrt{(y + 9.25)^2}

What we are doing is that we are finding the distance from the point on the parabola to the directrix .  Number 5 has the fourth option or D.

You might be interested in
Select TWO expressions from the list that have the same value.
avanturin [10]

Answer:

cos 67 and sin 23........

6 0
3 years ago
5x-3y-2(4x-y) Can someone help
Lisa [10]

Answer:

-3x-1y

Step-by-step explanation:

5x - 3y⇒ -2(4x-y)

             ⇒-2(4x - y) = -8x +2y

5x - 3y -8x + 2y

<u>Combine like terms:</u>

5x- 8x= -3x

-3y +2y = -1x

<u>-3x - 1y</u>

8 0
3 years ago
A peacock weighs 4,250 g. The mass of a magpie is 1/25 the mass of the peacock. If the mass of the parrot is 12 times the mass o
Black_prince [1.1K]

Answer: 6460g


Explanation:

Peacock = 4250g

Magpie = 1/25 x 4250 = 170g

Parrot = 12 x 170 = 2040g

Total = 4250 + 170 + 2040 = 6460g

8 0
3 years ago
A scientist has 100 milligrams of a radioactive element. The amount of radioactive element remaining after t days can be determi
pav-90 [236]

The answer is B. 81.2%

8 0
3 years ago
Pls try to give it as soon as possible ​
sergejj [24]

Answer:

I'm having a hard time with this, I keep confusing myself but hopefully this example will help at least to get an idea:

"12 cm

Explanation:

We're pouring 12 litres of water into a container that is 40cm long and 25cm wide. Let's see how big the bottom of the container is:

40cm×25cm=1000cm2

1 litre of water fills 1000cm3, and so it would rise 1 cm (we divide the volume of the water by the surface area to arrive at the height):

1000cm31000cm2=1cm

12 litres of water can then be seen to rise 12 cm:

12×1000cm31000cm2=12cm"

3 0
3 years ago
Other questions:
  • Determine f(5) for f(x) = 1/3(5 - 4x).<br><br> A. 5<br><br> B. -55/3<br><br> C. 25/3<br><br> D. -5
    15·1 answer
  • Find the area of the circle.. PLEASE HELP
    8·2 answers
  • Beth is going to the state fair. Each ride costs $7 to ride and each exhibit costs $3 to view. Let x represent the number of rid
    9·1 answer
  • Which are the reactants in this reaction?
    9·2 answers
  • If (a-b)²=3, a²+b²=29, find the value of ab.
    15·1 answer
  • 4.8/2z+15=0.2/5<br><br> Plz help I am only 8
    7·2 answers
  • Simplify.<br> 7√10+2√10-√10
    7·1 answer
  • a cylinder has a base diameter of 10 inches and a height of 19 inches. what is it's volume in cubic inches, to the nearest tenth
    8·1 answer
  • Reflect the point (a) a-axis, and (b) in the y-axis (-3,1)
    9·1 answer
  • There is a population of 139 bacteria in a colony. If the number of bacteria doubles every 189
    14·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!