Is 10a + 1b equivalent to 7a+5b-3a+4b or
4a + 9b equivalent to 7a+5b - 3a +4b
explain plsss​

Sketch the vector field vector f( vector r ) = 8vector r in the xy-plane. select all that apply. the length of each vector is 8. the lengths of the vectors decrease as you move away from the origin. all the vectors point away from the origin. all the vectors point in the same direction. all the vectors point towards the origin. the lengths of the vectors increase as you move away from the origin.

The moats separating people from the animals are 5 m wide for lions and 4 m wide for the elephants. if the lion’s moat is 4 m deep, how deep should the elephants’ moat be?

Sara made $253 for 11 hours of work. at the same rate how much would he make for 7 hours of work?