# Posts by Mabel

Total # Posts: 14

Math
An attack submarine is at a depth of 560 feet below the surface and detects a ship on the surface with its sonar that is at a 1.5 degree angle of elevation. What is the actual distance from the submarine to the ship in yards. Additionally is the sonar travels through sea water...

Math
An attack submarine is at a depth of 560 feet below the surface and detects a ship on the surface with its sonar that is at a 1.5 degree angle of elevation. What is the actual distance from the submarine to the ship in yards. Additionally is the sonar travels through sea water...

Maths area
16+20=36 so 36 feet.

Data Management
Could you help me with this math question. The mean of 4 numbers is 5 and the mean of 3 different numbers is 12. What is the mean of the 7 numbers combined? Produce an algebraic solution.

statistics
28.22

calculus
find a function f given that (1) the slope of the tangent line to graph of f at any point P(x,y) is given by dy/dx=3xy and (2) the graph of f passes through the point (0,2)

calculus
find the average value of the function f(x,y)=xe^y over the plane region R is the triangle with vertices (0,0), (1,0) and (1,1)

math
solve -0.5(x-5)+x=0.2(2+6x)

Chemistry
The approximate pKa values for the three dissociating groups of lysince are 2.2, 9.0, 10.5. What would the pH after addition of 10ml of 1.0M NaOH to 100ml of 0.1M lysine at pH 2.2?

Calculus
The owner of a farm wants to form four rectangular corrals. He has 750 meters of iron gate to enclose and to separate the four corrals. To save materials, he he decides to enclose a large area and to divide into four rectangles. Divide them will use part of the 750 meters of ...