TamB01
26.03.2020 •
Mathematics
Ted buys blocks of spruce for dollars each, and blocks of mahogany for dollars each. In a given month, Ted spends a total of dollars, where = + . The price of a block of mahogany, given that a block of spruce costs 5/9 as much as a block of mahogany, and Ted has bought 12 blocks of spruce and 15 blocks of mahogany for a total cost of $9750. Write an equation whose solution is the given quantity.
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Ответ:
The answer is 100°.
Step-by-step explanation: We are given that the figures in the picture are congruent. Therefore, we will have
∠A = ∠J = 133°,
∠D = ∠M = 86°,
∠C = ∠L =41°.
We are to find the measurement of the fourth angle, which is ∠B or ∠K.
Since the figures are quadrilaterals, so the um of all the four angles must be 360°.
In quadrilateral ABCD, we have
Thus, the answer is ∠B = ∠K =100°.