Mathematics, 22.07.2019 09:00, dbn4everloved

The cost of 2 televisions and 3 dvd players is $1421. the cost of 1 dvd is half the cost of 1 television. what is the cost of 1 television?

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Mathematics, 21.06.2019 20:30, nosugh

If m∠abc = 70°, what is m∠abd? justify your reasoning. using the addition property of equality, 40 + 70 = 110, so m∠abd = 110°. using the subtraction property of equality, 70 − 30 = 40, so m∠abd = 30°. using the angle addition postulate, 40 + m∠abd = 70. so, m∠abd = 30° using the subtraction property of equality. using the angle addition postulate, 40 + 70 = m∠abd. so, m∠abd = 110° using the addition property of equality.

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The cost of 2 televisions and 3 dvd players is $1421. the cost of 1 dvd is half the cost of 1 televi...