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Anna35 [415]
3 years ago
15

Does anyone know the right set up for this equation?

Mathematics
2 answers:
miss Akunina [59]3 years ago
8 0
I havent done this in a while, but i believe you substitute the variable (x). It says x=.75, so you would put f(x)=7(.75)




attashe74 [19]3 years ago
5 0
5.15 Is the value of the equation
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(b) Isabel takes 7 minutes to run a mile
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Why did the kangaroo go see a psychiatrist
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Because he always felt jumpy
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3 years ago
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Write the standard form equation of the ellipse shown in the graph, and identify the foci.
vlada-n [284]

Answer option A

From the given graph is a Vertical ellipse

Center of ellipse = (-2,-3)

Vertices are (-2,3)  and (-2,-9)

Co vertices are (-6,-3) and (2,-3)

The distance between center and vertices = 6, so a= 6

The distance between center and covertices = 4 , so b= 4

The general equation of vertical ellipse is

\frac{(x-h)^2}{b^2} + \frac{(y-k)^2}{a^2}=1

(h,k) is the center

we know center is (-2,-3)

h= -2, k = -3 , a= 6  and b = 4

The standard equation  becomes

\frac{(x+2)^2}{4^2} + \frac{(y+3)^2}{6^2}=1

\frac{(x+2)^2}{16} + \frac{(y+3)^2}{36}=1

Foci  are (h,k+c)  and (h,k-c)

c=\sqrt{a^2-b^2}

Plug in the a=6  and b=4

c=\sqrt{6^2-4^2}

 c=\sqrt{20}

  c=2\sqrt{5}, we know h=-2  and k=-3

Foci  are   (-2,-3+2\sqrt{5})  and  (-2,-3-2\sqrt{5})

Option A is correct

6 0
3 years ago
Hey help me pls:^<br>will give Yuh brainliest!!!!!​
mars1129 [50]

Answer:

1) x+10

2) 1/2

Step-by-step explanation:

6 0
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A person walks a path on 3 hours.In the first hour,he walks a third of the way;on the second hour,the forth of the way and on th
lana [24]

The person walked a distance of 120 kilometers in a time 3 hours. (Correct choice: C)

<h3>What is the length of the path covered by a person?</h3>

Herein we have the case of a person walking during a total time of three hours, whose conditions are explained mathematically by the following formula:

x = x / 3 + x / 4 + (x / 3 + 10)

x = (2 / 3) · x + x / 4 + 10

x = (11 / 12) · x + 10

x / 12 = 10

x = 120

The person walked a distance of 120 kilometers in a time 3 hours. (Correct choice: C)

To learn more on linear equations: brainly.com/question/11897796

#SPJ1

3 0
1 year ago
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