Saturday

July 26, 2014

July 26, 2014

Total # Posts: 11

**scienc**

answer is not 324

**math**

What is the sum of all the possible values of a for which 25x^2+(a−15)x+9 has exactly one distinct real root?

**math**

The difference of the cubes of two consecutive odd positive integers is 400 more than the sum of their squares. Find the sum of the two integers.

**calculus**

Evaluate lim x→−∞ (−7x/√x^2+14)+8

**physics**

Gymnasts can do all sorts of ridiculous tricks on various equipment. In the rings event, the gymnast is supported by two rings attached by cords to the ceiling (see a picture here). If a gymnast weighs 75 kg and is motionless on the rings, what is the tension in each cord?

**physics**

Tiger Woods can hit a golf ball quite hard. A golf ball just after being hit by Mr. Woods has a kinetic energy of 100 J and a momentum of 3 kg m/s. What is the mass of the golf ball in grams?

**physics**

A mouse runs 3 m east and 4 m north in 5 seconds. What is the magnitude of the mouse's average velocity during its run in m/s?

**math**

Out on my street, there are a certain number of pigeons sitting on telephone poles. If there were exactly 2 pigeons sitting on each telephone pole, then 1 pigeon would have no space to sit on. If there were exactly 3 pigeons sitting on each telephone pole, then there would be ...

**math 6**

Jordan has 4/5 as many DVDs as Joseph means joseph has more DVDs than Jordan. number of joseph's DVDs * 4/5 = 56 so number of joseph's DVDs= 56 * 5/4 = 70

**Chemistry**

how did you get that???

**math**

To pass her English Test, Lucille must get 75% of the items correct. Out of 80 questions, how many must she correctly answer?

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