4. Mary, who is sixteen years old, is four times as old as her brother. How old will Mary be when she is twice as old as her brother?

What is the effect of the phrases "prosperous in their time" and "prosperous in our time" in Theodore Roosevelt's quote "We should not forget that it will be just as important to our descendants to be prosperous in their time as it is to us to be

If the highest isoline on a hill is 24 meters, and the interval between isolines is 3 meters, what would the next possible higher isoline? What would be the next possible lower isoline? (for earth science)

What traditional African export system from 1200-1450 continues into 1450-1750?

What best describes a pure market economy

Explain In most reactors, what is a control rod made of and what is it used for?

Why were laws that the 12 tables unable to prevent corruption in the later empire

4. Mary, who is sixteen years old, is four times as old as her brother. How old will Mary be when she is twice as old as her brother?

The perimeter of a triangle is 32 feet. One side of the triangle is 11 feet longer than the second side. The third side is 9 feet longer than the second side. Find the length of each side.

What provides access to the internet that may be internal

Can humans be primary, secondary, and tertiary consumers?