# November 2018

## Lucero, Jaydee N.

- Read more about Lucero, Jaydee N.
- Log in or register to post comments
- 154 reads

**Problem**

Determine the percentage uncertainty in the area of a square that is 6.08 ± 0.01 m on a side.

A. 0.27% | C. 0.26% |

B. 0.25% | D. 0.29% |

- Read more about Determine the percentage uncertainty in the area of a square that is 6.08 (+/-) 0.01 m on a side.
- Log in or register to post comments
- 471 reads

**Problem**

In still water, your small boat averages 8 miles per hour. It takes you the same amount of time to travel 15 miles downstream, with the current, as 9 miles upstream, against the current. What is the rate of water's current?

A. 4 miles/hr | C. 2 miles/hr |

B. 3 miles/hr | D. 5 miles/hr |

**Problem**

A coin is so unbalanced that you are likely to get two heads in two successive throws as you are to get tails in one. What is the probability of getting heads in a single throw?

A. 0.168 | C. 0.681 |

B. 0.618 | D. 0.816 |

**Problem**

In the expansion of (2*x* - 1/*x*)^{10}, find the coefficient of the 8^{th} term.

A. 980 | C. 960 |

B. 970 | D. 990 |

- Read more about What is the Coefficient of the 8th Term of the Expansion of (2x - 1/x)^10?
- Log in or register to post comments
- 2924 reads

**Problem**

The formula $v = \sqrt{2gh}$ give the velocity, in feet per second, of an object when it falls *h* feet accelerated by gravity *g*, in feet per second squared. If *g* is approximately 32 feet per second squared, find how far an object has fallen if its velocity is 80 feet per second.

A. 80 feet | C. 70 feet |

B. 100 feet | D. 90 feet |

- Read more about How Far An Object Has Fallen If Its Velocity Is 80 Feet Per Second
- Log in or register to post comments
- 1463 reads

**Problem**

Earth is approximately 93,000,000.00 miles from the sun, and the Jupiter is approximately 484,000,900.00 miles from the sun. How long would it take a spaceship traveling at 7,500.00 mph to fly from Earth to Jupiter?

A. 9.0 years | C. 6.0 years |

B. 5.0 years | D. 3.0 years |

- Read more about How Long Would it Take to Fly From Earth to Jupiter?
- Log in or register to post comments
- 1373 reads

**Problem**

A meteorologist is inflating a spherical balloon with a helium gas. If the radius of a balloon is changing at a rate of 1.5 cm/sec., express the volume *V* of the balloon as a function of time *t* (in seconds). Hint: Use composite function relationship *V*_{sphere} = 4/3 π*r*^{3} as a function of *x* (radius), and *x* (radius) as a function of *t* (time).

A. V(t) = 5/2 πt^{3} |
C. V(t) = 9/2 πt^{3} |

B. V(t) = 7/2 πt^{3} |
D. V(t) = 3/2 πt^{3} |

- Read more about Volume of Inflating Spherical Balloon as a Function of Time
- Log in or register to post comments
- 1495 reads

**Problem**

A farmer owned a square field measuring exactly 2261 m on each side. 1898 m from one corner and 1009 m from an adjacent corner stands Narra tree. A neighbor offered to purchase a triangular portion of the field stipulating that a fence should be erected in a straight line from one side of the field to an adjacent side so that the Narra tree was part of the fence. The farmer accepted the offer but made sure that the triangular portion was a minimum area. What was the area of the field the neighbor received and how long was the fence? Hint: Use the Cosine Law.

A. A = 972,325 m^{2} and L = 2,236 m |

B. A = 950,160 m^{2} and L = 2,122 m |

C. A = 946,350 m^{2} and L = 2,495 m |

D. A = 939,120 m^{2} and L = 2,018 m |

- Read more about Smallest Triangular Portion From A Square Lot
- Log in or register to post comments
- 1560 reads

**Problem**

The number of hours daylight, *D*(*t*) at a particular time of the year can be approximated by

for *t* days and *t* = 0 corresponding to January 1. The constant *K* determines the total variation in day length and depends on the latitude of the locale. When is the day length the longest, assuming that it is NOT a leap year?

A. December 20 | C. June 20 |

B. June 19 | D. December 19 |

- Read more about Longest Day of the Year: Summer Solstice
- Log in or register to post comments
- 360 reads