kamjay2006
20.07.2019 •
Mathematics
1. alberto has 318 baseball cards and 273 basketball cards. estimate how many sports cards alberto has. describe the strategy you used to estimate. 2. alberto has 92 stamps in one large album and 38 stamps in another small album. how can he use mental math to find how many more stamps are in the large album? use drawings to show your answer. 3. alberto has 62 pennies, 41 nickels, and 29 dimes. what strategy can alberto use to find the total number of coins? describe it and show . 4. suppose alberto collects another 343 coins. how many coins will he have in his collection now? describe two strategies you can use. then choose one strategy and solve. 5. of alberto's total number of coins, 168 are quarters. describe two strategies you can use to find how many coins are not quarters. estimate the difference. then choose one strategy and solve.
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Ответ:
Ответ:
D, x = -2
Step-by-step explanation:
The slope of y = -2 is 0, because it is horizontal. The perpendicular slope of a horizontal slope is a vertical, which has x equaled to a number. The answer is D, x = -2, because its slope is undefined, or vertical. This makes it perpendicular to 0, or horizontal.