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Oksanka [162]
4 years ago
5

Select all equations that have the solution x = 7. 3(x - 5) = 1 + 5(x - 6) 2(x + 7) = 28 6(2x - 1) - 12 = -2(x + 10) 60 = 4(x +

8) please i need help
Mathematics
1 answer:
Paha777 [63]4 years ago
5 0

Answer: 2(x+7) , 60=4(x+8), and 3(x-5)=1+5(x+6)

Step-by-step explanation:

Just simplify all the equations and you get 7 for those 3

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What is the sum of the interior angles of the polygon shown below
Ipatiy [6.2K]

Answer:

900

Step-by-step explanation:

The sum of the interior angles of a polygon with n sides is given by the formula:

S=(n-2)180

The polygon given has 7 sides. Substitute 7 for n. Thus:

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I WILL GIVE MORE POINTS IF I GET THE RIGHT ANSWER
shutvik [7]

Answer:

v= 6km/h - 1km/h^2 * t

Step-by-step explanation:

From the information, it seems the runner is slowing down because the speed at 1st hour is 5km/h but at 3rd hour becomes 3km/h.

If v= velocity, v0= initial speed, t= time, and the a=acceleration then the function would be:  

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To find the acceleration you need to do this equation:

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a = (3km/h-5km/h)/ (3 hour- 1 hour)

a = (-2km/h)/2hour= -1 km/hour^2

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5km/h= v0 + (-1 km/hour^2 * 1 hour)

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The graph would look like a backslash(\) from 5 gradually go down to 1.  

6                          

5 O                    

4      O                

3          O              

2              O            

1                   O      

   1   2  3  4  5

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