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nika2105 [10]
3 years ago
12

If y+3y+5y=−18

Mathematics
1 answer:
hoa [83]3 years ago
8 0

Answer:

y=-2

Step-by-step explanation:

y+3y+5y=−18

Combine like terms

9y = -18

Divide each side by 9

9y/9 = -18/9

y = -2

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Mary leaves her house to take a walk. The graph shows the distance, d, in feet from her house that Mary is at any given time, t,
Vitek1552 [10]
You haven't provided the graph, therefore, I cannot provide you with a specific solution for this question.
However, I will tell you how to solve it and you can apply on the graph you have.

Now, we are given that:
x-axis represents the distance in ft
y-axis represents the time in minutes

To get the time that she has walked when she reaches the farthest point from her house, all you have to do is:
1- go to the greatest point on the x-axis. This point would be representing the farthest distance.
2- get the value of the y corresponding to the x-point you got in step one. This would be the time walked when she reaches the farthest point which is the value you are looking for.

Hope this helps :)
5 0
3 years ago
Find the equation of all tangent lines having slope of -1 that are tangent to the curve y=(9)/(x+1)
fredd [130]

Answer:

f(x)=\frac9{x+1}\\ f'(x)=-\frac9{(x+1)^2}\\ f'(x)=-1\ \iff\ -\frac9{(x+1)^2}=-1\ \to \ \frac9{(x+1)^2}=1\ \to \ (x+1)^2=9\\ |x+1|=3\ \to \ x+1=3\ \vee\ x+1=-3\\ x_1=2\ \vee\ x_2=-4\\ f(x_1)=f(2)=\frac9{2+1}=3\\ f(x_2)=f(-4)=\frac9{-4+1}=-3

First tangent line:

y=f'(x_1)\cdot (x-x_1)+f(x_1)\ \to \ y=-1(x-2)+3\ \to \ y=-x+5

Second tangent line:

y=f'(x_2)\cdot (x-x_2)+f(x_2)\ \to \ y=-1(x+4)-3\ \to \ y=-x-7


Notice: slope of -1 means that both f'(x_1), \ f'(x_2) are equal to -1, so f'(x_1)=-1 \ and \ f'(x_2)=-1


6 0
2 years ago
Read 2 more answers
Please help! Write the slope-intercept form equation of the trend line
Eduardwww [97]

Answer:

y= -1/3x+9.2

Step-by-step explanation:

I believe that it is 9.2 although it could be another number in the 9's.

The slope is (rise) -1 and (run) 3 and the line crosses the y-intercept at what it looks like 9.2

6 0
3 years ago
-7-(-9) =<br> What is the answer to the question
Rudiy27
Answer: 2

-7 - (-9) could be visualized as -7 + 9

-7 + 9 is 2
7 0
3 years ago
Read 2 more answers
The scatter plot shows a projection of the average ocelot population living in Laguna Atascosa National Wildlife Refuge near Bro
bearhunter [10]

Answer:

c

Step-by-step explanation:

All the animals will go extinct.

8 0
3 years ago
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