hebibova2016
07.07.2019 •
Mathematics
Jordan and sharla are saving money to go on a study abroad trip. they must provide a down payment of $650 to sign up for the trip, and they can pay the remaining balance later. jordan raises money by mowing lawns in his neighborhood and charges $25 per lawn. sharla raises money by selling handmade necklaces for $15 each. sharla raises less money than jordan does because sharla only has enough materials to make 40 necklaces.write two constraints to model the problem. let x represent the number of la wns lordan mows and y represent the number of necklaces sharla sells. (b) can sharla afford the down payment with the money she earns selling all her necklaces? explain your answer.
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Ответ:
A) 25x+15y=650
25x+15(40)=650
Or it could be 25x=650 and 15y=650
B) No because she makes $15 for every necklace which she only has 40 necklaces 15x40=600
Ответ:
540°
Step-by-step explanation:
Just divide the shape into triangles and count the number of triangles. This is what your formula is doing for you. It's telling you how many triangles make up the shape and then multiplying that number by 180 degrees to find the sum of your interior angles.