Can anyone solve it :
grace has a cat, a bird and a package of bird seed. she wants to get all three home safety, but her bicycle will hold only one at a time. the cat will eat the bird if they two are left alone together. the bird will eat the birdseed if they are left alone. how many trips does grace need to make to get everything safety? explain!

Grace will take the bird first drop it off go back get the birdseed go back to the bird drop birdseed grab bird go back drop bird pick up cat go to birdseed on the other side drop the cat go back again get the bird then bring it back 

All in all she went 7 times 

Okay so for every triangle has three angles that always add up to 180 degrees. and to tell the difference between whether they are secure, right or obtuse is that acute: has one angle that is less than 90 degrees. right triangle means there is at least one angle that is exactly 90 degrees. and an obtuse angle has an angle that is bigger than 180 degrees. i’ll do #13 as an example: 13. 40 and 50 so if every triangle has 180 degrees 40+50= 90 degrees then180-90= 90 degrees so the third angle is 90 degrees and because this triangle has a 90 degree angle it means it is a right triangle

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