Which of the following is the equation of a circle that has a radius of 2.5 and its center at (4, -3)? a. (x-4)²+ (y+3)²=2.5 b. (x+4)² + (y-3)² =2.5 c. (x-4)² + (y+3)² =6.5 d. ( x+4)² + (y-3)²=6.5

Finding tbe values of the variables in each kite

Urgentwhat is the area of the figure?

At wind speeds above 1000 centimeters per second (cm/sec), significant sand-moving events begin to occur. wind speeds below 1000 cm/sec deposit sand and wind speeds above 1000 cm/sec move sand to new locations. the cyclic nature of wind and moving sand determines the shape and location of large dunes. at a test site, the prevailing direction of the wind did not change noticeably. however, the velocity did change. fifty-nine wind speed readings gave an average velocity of x = 1075 cm/sec. based on long-term experience, σ can be assumed to be 245 cm/sec. (a) find a 95% confidence interval for the population mean wind speed at this site. (round your answers to the nearest whole number.) lower limit cm/sec upper limit cm/sec