ax^2 + bx + c = 0
Plug in the values of a, b and c, and then do the calculations.
Answer:
D
to illustrate that science can help stop illness
and diseases
Answer:
Thomas L. Jennings was the first black man to receive a patent. The patent was awarded on March 3, 1821 (US Patent 3306x) for his discovery of a process called dry-scouring which was the forerunner of today's modern dry-cleaning. Jennings was born free in New York City, New York in 179
Explanation:
Answer:
The correct answer is b. Compressed sound.
Explanation:
Compressed sound from a technical point of view occurs when a decrease in the range between the sounds that are loudest and the sounds that are the quietest occurs.
During sound compression the dynamic range between said sounds that are quieter and said sounds that are the loudest gets reduced.
This is done by amplifying the quiet sounds and attenuating the sounds that are the loudest.
<u>In this particular case, by amplifying soft sounds but not loud sounds, digital hearing aids produce:</u>
b. Compressed sound.
Answer:
Available freshwater allowed people to grow food.
Explanation:
Water is super important for a lot of different reasons. The more water that people had, the more crops that they can grow.
