SEISMOLOGY The intensity of a shock wave from an earthquake is given by the formula R=10810 where Ris the magnitude, / is a measure of wave energy, and/o – 1. Find the intensity per unit of area for the
followingearthquakes,
a. Guam region, in 2008, R-6.7
b. Macquarie Island region, in 2008, R-2.1

Can anyone me get through my algebra 2 class? the only class i need to graduate..

The students at jefferson middle school are raising money for a charity by selling t-shirts and hats. the number of t-shirts sold was 3 times the number of hats. the profit was $5 for each t-shirt sold and $2.50 for each hat sold. the students raised $840 for the charity. they used the system below to analyze their success and found the solution to be (144, 48). 5x+2.50y=840 x=3y how much did they earn from t-shirt sales?

Acircle has a diameter with endpoints at 15 + 25i and –25 – 17i. which point is also on the circle? –15 +21i 0 + 0i 15 + 17i 16 + 24i