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julia-pushkina [17]
2 years ago
9

Solve the system of equations using subtraction, 2x - 4y = -4 2x + y = 11​

Mathematics
1 answer:
Ludmilka [50]2 years ago
6 0

Answer:

x=4, y=3; (4,3)

Step-by-step explanation:

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Step-by-step explanation:

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In ΔABC, BC = 4 centimeters, m∠B = m∠C, and m∠A = 20°. What is AC to two decimal places?
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M<A = <span>20°
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a/sin A = b/sin B = c/sin c<span>

4/sin20 = AC/sin80 = AB/sin80

now we can solve AC

</span>4/sin20 = AC/sin80
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AC = 4(0.98) / (0.34)
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AC = 11.52

answer

</span>C.11.52 centimeters<span>

</span>
5 0
3 years ago
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