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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.

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Solve the inequality 6x - 8 &gt; 4x + 26.
Mashutka [201]

Answer:

the answer is x>17 I hope it helps you and next time use mathpapa

3 0
3 years ago
A rectangle has a length of 6.5m and a width of 7.3m what is the area and the perimeter
Bad White [126]

Step-by-step explanation:

<h3><em><u>Given</u></em><em><u>:</u></em></h3>

Length of the rectangle = 6.5 m

Width of the rectangule = 7.3 m

<h3><em><u>Then</u></em><em><u>:</u></em></h3>

<u>First</u><u> </u><u>case</u><u>,</u>

Area of the rectangle

= length × width

= 6.5 m × 7.3 m

= <em><u>47.45</u></em><em><u> </u></em><em><u>s</u></em><em><u>q</u></em><em><u>.</u></em><em><u>m</u></em><em><u> </u></em><em><u>(</u></em><em><u>Ans</u></em><em><u>)</u></em><em><u>(</u></em><em><u>i</u></em><em><u>)</u></em>

<u>Second</u><u> </u><u>case</u><u>,</u>

Perimeter of the rectangle

= 2(length + width)

= 2(6.5 + 7.3)m

= 2 × 13.8 m

= <em><u>27</u></em><em><u>.</u></em><em><u>6</u></em><em><u> </u></em><em><u>m</u></em><em><u> </u></em><em><u>(</u></em><em><u>Ans</u></em><em><u>)</u></em><em><u>(</u></em><em><u>ii</u></em><em><u>)</u></em>

5 0
2 years ago
Read 2 more answers
Can you please explain how you got the answer? Also plz tell me what the closed and open circle mean again..
ale4655 [162]

Answer: A

Step-by-step explanation:

  • Open circle means that x does not equal that number. For example, the open circle on C is on 8, so that shows x is not equal to 8.
  • Closed circle means that x does equal that number. For example on A, there is a closed circle on 8, so x could equal 8.

First, we need to solve the equation.

  1. Subtract 200 frim 1200 -> 125x ≥ 1000.
  2. Divide 125 from 1000 to isolate the x -> x ≥ 8

So, that means x is bigger than or equal to 8.

8 0
3 years ago
Read 2 more answers
The answer to this question
Sophie [7]

The answer to this question is D) 13.9 in.

Try using the Pythagorean theorem when solving to get the hypotenuse or other angles for a right triangle.

4 0
2 years ago
Hey want help me??!! ill mark you as brainn!!pleasee!
Andru [333]

Answer:

Here, length is 8 in. Width is 4in. and height is (3+3+3)=9 in. Then use the formula.

A= 2wl+2hl+2hw

= 2×4×8 + 2×9×8+2×9×4

=280 inch²

4 0
3 years ago
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