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UNO [17]
2 years ago
10

Pls help i dont understand angles

Mathematics
1 answer:
Elza [17]2 years ago
8 0
You got the angles in front of each other are equal rule down. Good job.

Other rule is that the angle on top of the line should equal 180. Like angle 3 + 79.4+37.3 should equal 180.

Same thing with the angle 4: 180-37.3= 142.7

Next the middle part is a triangle. Sum of all 3 angles should be 180. 79.4+37.3 + angle 1 needs to equal 180.

Thats all you need to know for these
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A shop sells a party hat at x dollars and a mask at y dollars. On a particular morning, 3 hats and 4 masks were sold for $27. In
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Answer:

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Step-by-step explanation:

Let be "x" the cost in dollars of a party hat and "y" the cost in dollars of a mask.

Set up a System of equations using the information given in the exercise:

\left \{ {{3x+4y=27} \atop {3x+6y=33}} \right.

You can use the Elimination Method to solve this System of equations:

1. You can multiply the first equation by -1.

2. Then you must add the equations.

3. Solve for "y".

Then:

\left \{ {{-3x-4y=-27} \atop {3x+6y=33}} \right.\\.....................\\2y=6\\\\y=\frac{6}{2}\\\\y=3

4. Now you can substitute the value of "y" into any original equation.

5. Finally, solve for "x" in order to find its value.

Then:

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4 years ago
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