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3 years ago

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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(a)It takes 29 pounds of seed to completely plant a 4 -acre field. How many acres can be planted per pound of seed?

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(a) You can plant 7 1/4 acres per pound of seed
(b) Isabel takes 7 minutes to run a mile

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3 years ago

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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:

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3 years ago

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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