Free points whats 10000000-10000000?

The equation x2 – 1x – 90 = 0 has solutions {a, b}. what is a + b?

The magnitude, m, of an earthquake is defined to be m=log l/s, where i is the intensity of the earthquake (measured by the amplitude of the seismograph wave) and s is the intensity of a “standard” earthquake, which is barely detectable. what is the magnitude of an earthquake that is 1,000 times more intense than a standard earthquake? use a calculator. round your answer to the nearest tenth.

Aflower has 26 chromosomes. to create a new flower,how many would a sperm cell have what is called?