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FrozenT [24]
3 years ago
12

Is -x+4y=-2 a direct variaition

Mathematics
1 answer:
Kruka [31]3 years ago
3 0
No, because something extra is being added/divided and there are too many variables on one side

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Ben is 4 times as old as Izzy and is also 6 years older than Izzy. How old is Izzy
Arlecino [84]

Answer:

2 years

Step-by-step explanation:

Let B = age on Ben

and age of Izzy =I

B =4I

B = 6+I

Gives 6+I = 4I

6 = 3I

I =2 years and B = 4x2 = 8years

Age of Izzy = 2 years

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3 years ago
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Step-by-step explanation:

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2 years ago
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7 0
3 years ago
Which graph represents the solution set of the system of inequalities?
Novay_Z [31]
Answer:
(see image)
bottom right image

Explanation:
First try the origin (0,0) to rule out two of the graphs. 
3y ≥ x - 9 
3(0) ≥ (0) - 9 
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3x + y > - 3 
3(0) + (0) > - 3
3 > - 3 yes 
so the origin should be in the shaded area of the graph, which rules out the top right and bottom left graphs. 
Now try a coordinate that is in the shaded area of one of the remaining graphs, but not in the other one. If it works, the graph is the one that has that point in the shaded region, and vice versa. 
Try point (4, 2)
3y ≥ x - 9 
3(2) ≥ (4) - 9
6 ≥  - 5 yes
3x + y > - 3 
3(4) + (2) > - 3
12 + 2 > - 3
14 > - 3 yes
So the graph is the bottom right one since (4, 2) is included in that shaded region.

4 0
3 years ago
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