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PtichkaEL [24]
3 years ago
9

the shadow of an object varies directly as it height a man 1.8m tall cast a shadow 4.32m long if at the same time a flagpole cas

t a shadow 12.8m long how it is the flagpole?

Mathematics
1 answer:
Usimov [2.4K]3 years ago
8 0
This will help a lot if you know how to do proportions... hope I helped

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Solve the system of equations.<br> 7x + 6y = -1<br> --x + 2y = 3
Harrizon [31]

Answer:

X=-1

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Solve using Elimination.

Step-by-step explanation:

Multiply the second equation by 7.

The two equations are now:

7x+6y=-1

-7x +14y=21

Combine the two equations

7x and -7x cancel each other out, 14y+6y is 20y, and 21 - 1 is 20.

The equation is now

20y=20, divide 20 on both sides to get Y=1.

Now, substitute 1 as Y in the second equation for -x+2(1)=3

-x+2=3, can be simplified, by subtracting 2 from both sides. Giving us

-x=1.

Divide both sides by -1 for X=-1

Final answers being X=-1, Y=1

Hope this helps! Let me know if you have further questions!

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2 years ago
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dolphi86 [110]

Answer:

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Step-by-step explanation:

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sleet_krkn [62]
They’re all the same answer so...??
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Resolva esta questão usando a lei do anulamento 2×(×-5) =0
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Answer:

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