I'm wondering if anybody could help answer these two questions...

1.) What mach number would you be traveling at, if at an altitude of 165,000 feet if you had an indicated airspeed of...

- 390 kts?

- 450 kts?

- 585 kts?

- 650 kts?

- 750 kts?

- 900 kts?

2.) What mach number would you be traveling at, if at an altitude of 191,000 feet if you had an indicated airspeed of...

- 390 kts?

- 450 kts?

- 585 kts?

- 650 kts?

- 750 kts?

- 900 kts?

Blackbird