Answer:
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Step-by-step explanation:
Answer:
7x³ + 13x²+ 8x +9
Step-by-step explanation:
(3x² + 2x + 7x³) + (10x² + 6x + 9)
= 3x² + 2x + 7x³ + 10x² + 6x + 9
= 7x³ + (3x²+ 10x²)+ (2x+ 6x) +9
= 7x³ + 13x²+ 8x +9
Answer:
19
Step-by-step explanation:
100, 121, 144, 196, 225, 256, 289, 324, 361, 400, 441, 484, 529, 576, 625, 676, 729, 784, 841 . are perfect squares in between 90 and 890, all together there are : 19
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