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Mumz [18]
3 years ago
15

Please someone tell me the awnser

Mathematics
2 answers:
vaieri [72.5K]3 years ago
6 0
16 because 128/8=16 do you got it
uranmaximum [27]3 years ago
4 0
If you divide 128 cookies by 8 trays, you'll get 16.
Therefore, theres 16 cookies baked in each 8 trays.
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Find the equation of a parabola with a focus at (0,-1) and a directrix at y = 4.
Anastasy [175]

Answer:

  y = -1/10x^2 +2.5

Step-by-step explanation:

The distance from focus to directrix is twice the distance from focus to vertex. The focus-directrix distance is the difference in y-values:

  -1 -4 = -5

So, the distance from focus to vertex is p = -5/2 = -2.5. This places the focus 2.5 units below the vertex. Then the vertex is at (h, k) = (0, -1) +(0, 2.5) = (0, 1.5).

The scale factor of the parabola is 1/(4p) = 1/(4(-2.5)) = -1/10. Then the equation of the parabola is ...

  y = (1/(4p))(x -h) +k

  y = -1/10x^2 +2.5

_____

You can check the graph by making sure the focus and directrix are the same distance from the parabola everywhere. Of course, if the vertex is halfway between focus and directrix, the distances are the same there. Another point that is usually easy to check is the point on the parabola that is even with the focus. It should be as far from the focus as it is from the directrix. In this parabola, the focus is 5 units from the directrix, and we see the points on the parabola at y=-1 are 5 units from the focus.

5 0
3 years ago
WILL GIVE BRAINLESS IF SOLVED!!!! reply
sweet-ann [11.9K]
2 BBC’s if that’s what the council agrees as fair punishment for lying cheating and spreading evil i just want to die
5 0
2 years ago
PLEASE PLEASE HELP WILL MARK BRAINLIEST!!
oksian1 [2.3K]

The equivalent expression to given expression is 1/3.

<h3>What is Equivalent Expression?</h3>

Equivalent expressions are defined as algebraic expressions which give the same resulting expression. An algebraic expression (or) a variable expression is defined as a combination of terms by the operations such as addition, subtraction, multiplication, division.

Here, given expression

    \sqrt{2/x^2} X \sqrt{x^2/18}

=   \sqrt{2 X x^2/18x^2}

=    \sqrt{1/9}

=   1/3

Thus, the equivalent expression to given expression is 1/3.

Learn more about equivalent expression from:

brainly.com/question/24242989

#SPJ1

7 0
2 years ago
You earn a 90% on his science test you answer 18 questions correctly how many questions were on the test
Bogdan [553]
Hello there!

The correct answer is 20.

Hope This Helps You!
Good Luck :)
8 0
3 years ago
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Can someone help me find the volume, area and height of this prism? 7th grade math :)
kolezko [41]

Answer: lalalallalalalalal

Step-by-step explanation:

5 0
3 years ago
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