Answer:
The valueof x is zero
Step-by-step explanation: The only real number that can double but be the same is 0. Same goes for , x has to equal 0. Voila! Anything multiplied by zero is zero. The only real value for x is 0.
64 is a composite because 64 × 1 = 64 and 8×8=64
She began with 20.
If she bought 7 more books and ended up with 17, that means she had ten beforehand. If she had half remaining, we simply double it, thus getting 20.
<span>The inner core is made of solid iron, and it is surrounded by the liquid iron of the outer core. It is solid because the extreme pressure at the center of the earth prevents it from melting, despite the unimaginable temperatures.</span>
If you mean which is best to have then $6.40 it gives you the most amonut of money to spend on whatever! Hope this is helpful and if you could mark me as brainliest!