05/25/20

#### An investor wants to analyze the earnings of a mutual fund account. Four years ago, the value of the account was and it is now worth (no additional deposits were made).

An investor wants to analyze the earnings of a mutual fund account. Four years ago, the value of the account was and it is now worth (no additional deposits were made). If the account is compared... more

05/21/20

05/20/20

#### The graph of f ′(x) is continuous, positive, and has a relative maximum at x = 0. Which of the following statements must be true?

The graph of f ′(x) is continuous, positive, and has a relative maximum at x = 0. Which of the following statements must be true? The graph of f is always concave down. The graph of f is always... more

05/07/20

#### What is the common difference or ratio

Given the following sequence 6,-24,96,-384..

05/07/20

#### Vectors Problem - Suppose u has magnitude 5, and v has magnitude 8, and the angle between the two vectors is 105 degrees. Find u • v. Please include steps.

there are small arrows pointing right on top of u and v (format won't let me add)

05/01/20

#### Brian kicks a soccer ball with the initial velocity of 25m/sec. The equation h=vt-5t^2. At what time during the descent is the height of the soccer ball 20 meters?

(where h=height, v= initial velocity, and t is the time.) represents this situation.I also have this equation to go off of:Y = - 5t^2 - 25t - 20

04/28/20

We quote from V. Belevitch, Classical Network Theory (Holden-Day, 1968, p.159): “When a generator of e.m.f. e and internal positive resistance Ri is connected to a positive load resistance R, the... more

04/13/20

#### Stoichiometry problem

__ N2 + __ H2 → __ NH3How many ammonia molecules are produced if 25 x 1024 molecules of nitrogen gas are reacted with an excess of hydrogen gas?

09/29/19

#### Physics Homework 2.4

A car is parked on an incline that makes an angle of 24˚ with the horizontal. The car rolls from rest down the incline with a constant acceleration of 3.96 m/s2 . How far will the car have... more

05/23/19

#### small and big popcorn bags

A large bag of popcorn is 2 1/2 of a small bag. at the end of a party there is 3 1/3 small popcorn bags and 2 1/4 large popcorn bags. How many small popcorn bags do we need for the remaining popcorn. more

05/17/19

#### Geometry cereal box

Design a new cereal box that will hold the same amount of cereal but reduce manufacturing costs. Prove that your new design holds the same amount but can be manufactured more cheaply. *My box costs... more

05/10/19

#### Geometry Help!!

Two trees are planted in a garden. One measures 10 feet 6 inches tall and casts a shadow of 11 feet 3 inches long. The second tree casts a shadow of 17 feet 6 inches long at the same time of day.... more

04/17/19

#### A car goes uphill for 1 mile at 20mph and then downhill for 1 mile at 30mph. What is the average speed of the car? (It is NOT 25mph!)

Remember that average speed is total distance traveled divided by total time. The total distance is clearly 2 miles. So you need to figure out the total time.

04/17/19

#### how long will it take for two trains to meet

Train A departed from City A at a speed of 80 kilometers an hour, and at the same time Train B departed from City B. Train B is 50% faster than Train A. The distance between the cities is 600... more

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