Which is a reason the author gives to support that older monkey puzzle trees have an umbrella shape? A.
As it gets older it loses its bottom branches.
B.
In its early growth years it is shaped like a cone.
C.
It is used to make furniture.
D.
It grows to be 12 stories tall.

If tan2a=cot(a+60), find the value of a, where 2a is an acute angle

The federal reserve controls certain interest rates in the united states. investors often try to speculate as to whether the federal reserve will raise or lower rates and by how much. suppose a company conducts extensive interviews with financial analysts, and as a result, predicts that "thefed" will increase rates by an average of 0.25 percentage points every six months for the forseeable future. which type of equation could be used to model the predicted interest rates over the next several years, assuming no other significant changes? a) a linear equation b) a quadratic equation c) a polynomial equation d) an exponential equation

42. if 20 men can eat 200 kg of wheat in 40 days, then 10 men can eat 300 kg of wheat in how many days? a) 120 days b) 60 days c) 80 days d) none of these