Y = -2x + 5 and 2x + y = -7

not true

Explanation:

substitution is convenient here

2x + (-2x + 5) = -7

2x - 2x - 5 = -7

-5 = -7

not an equality, thus the lines are parallel and have no intersection

explanation:

considering the bohr theory, the type of connection that requires the transfer the answer conuldn't be right

the only real purpose of sputnik 1 was to beat the us into space. we were getting close to launching a useful satellite, explorer 1 - which launched on january 31, 1958. the ussr had to beat that, so they launched sputnik 1 on october 4, 19