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denpristay [2]
2 years ago
6

A quilt contains cuts of congruent right triangular pieces with a base of

Mathematics
1 answer:
Dmitrij [34]2 years ago
4 0
I’m sorry I’m confused it’s all spaced out can you put it in the comments and I’ll answer in there? Hope you have a nice day!
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What is the equation of the quadratic graph with a focus of (3, 1) and a directrix of y = 5?
telo118 [61]

Answer:

f(x)=-\frac{1}{8}(x-3)^2+3

Step-by-step explanation:

We want to find the equation of the parabola with a focus of (3,1) and directrix y=5.

Considering the directrix, the quadratic graph must open downwards.


The equation of this parabola is given by the formula,

(x-h)^2=4p(y-k), where (h,k) is the vertex of the parabola.


The axis of this parabola meets the directrix at (3,5).

Since the vertex is the midpoint of the focus and the point of intersection of the axis of the parabola and the directrix,


h=\frac{3+3}{2}=3 and k=\frac{5+1}{2}=3.


The equation of the parabola now becomes,


(x-3)^2=4p(y-3).


Also |p| is the distance between the vertex and the directrix.


|p|=2


This implies that p=-2\:or\:2.


Since the parabola turns downwards,


p=-2.



Our equation now becomes,


(x-3)^2=4(-2)(y-3).


(x-3)^2=-8(y-3).


We make y the subject to get,

y=-\frac{1}{8}(x-3)^2+3).


This is the same as

f(x)=-\frac{1}{8}(x-3)^2+3).









4 0
3 years ago
Please answer :'<
sesenic [268]

Answer:

D. 56.3 cubic units

Step-by-step explanation:

To find the volume of a rectangular prism you use the formula <u>v=l*w*h</u> which means you multiply <u>5*3*3.75</u> to find your answer of 56.3 cubic units.

3 0
3 years ago
Read 2 more answers
What is the slope if i only have the two points (9,8) and (3,4)
DIA [1.3K]
The slope should be
m= 2/3 (2 over 3)
3 0
3 years ago
Read 2 more answers
-2(x-2)=-16 answer.
REY [17]

Answer:

-2x+4=-16

-2x = -16-4

-2x = -20

x = -20/-2

x = 10

3 0
3 years ago
Read 2 more answers
Ray and Lilli are designing their own shoes. They have 4 color options for the base and 6 color options for the accent. They can
IrinaVladis [17]
Remark: in the solution, the word Combination is used in the daily usage of the word, not in the combinatorial (mathematical) language.


Let the available 4 base colors be {b_1, b_2, b_3, b_4},

the available 6 accent colors be   {a_1, a_2, a_3, a_4, a_5, a_6},

and the available 2 fonts for the embroidery be {e_1, e_2},


so we have 4 b's, 6a's and 2 e's.


The event that Ray and Lilly design identical shoes can happen in the following way:

Ray has in total 4*6*2=48 possible combinations, and in each of these combinations, Lilly makes the same exact combinations of the 3- b's, a's and  e's.

The sample space is 48 possible combinations of Ray * 48 possible combinations of Lilly = 48*48
(among these there are 48 matches of the combinations)



Thus P(designing identical shoes)=48/(48*48)=1/48=0.02



Answer:0.02



6 0
3 years ago
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