In a class of 25 students, each student shakes

hands with each of the other students once. How

many handshakes are there?

A person is 185 cm tall and casts a shadow 145 cm long. A nearby tree casts a shadow which is 212 cm long. Find the height of the tree in cm.

A commuter van has 38 seats and 14 windows. How many windows are in 6 commuter vans A 70 B 84 C 102 D 228

What is the nth rule of the quadratic sequence 4,15,30,49,72,99,130

Find the x and y intercept for - 2x-5y=30

Solve the equation 0.5x = 16 for x using the division property of equality.

A scientist is investigating the effects of cold on human skin. In one of the scientist? s experiments, the temperature starts at 70? F and drops by 1/10? every 2 minutes. What is the temperature after 6 minutes?

Derivative of g (x) = (2ra^ (rx) + n) ^p?

She can keep the fire burning for 4 hours with 6 logs how many logs would she have with 18 hours

if the area of a triangle is 4.5 and the it's mutiblied by the scale factor of 7 what is the area of the bigger triangle

Is - 11 greater than - 5