How do you round 3.99 to the nearest tenths?

Improper fraction whose value is between 5-10 and denominator is 9

How can I determine the value of x that will make the expression a real √x-1

What % more than 80 is more than 104

If I had 2 slopes, one that was x+2y>-2 (2y>-x-2) and x+y≥4 (y≥-x+4), what direction would each of the slopes be if I plotted them on a graph? What direction is both a positive and negative graph and how can I tell if it's positive or negative?

Which method should be used to solve for x?2.5 x=5.7

In one version of trail mix, there are 3 cups of peanuts mixed with 2 cups of raisins. In another trail mix, there are 4.5 cups of peanuts mixed with 3 cups of raisins are the ratios equivalent for the 2 mixes? Explain your reasoning

Solve the equation. Check your work. 3/8 (x + 8) = 3/4 (x + 5) + 1/8

She spends $10000000 to buy a plant. Makes $13000 per boat. Write an expression that would give you her profit if she sold x boats.

A bag has 5 red marbles, 6 blue marbles and 4 black marbles. What is the probability of picking a black marble, replacing it, and then picking a blue marble

Each angle of a regular pentagon has a measure of