Sunday

March 29, 2015

March 29, 2015

Posted by **Anonymous** on Sunday, May 19, 2013 at 12:37am.

- Mathematics -
**MathMate**, Sunday, May 19, 2013 at 7:51amAssuming radiator reaches 120° between 0 and 4 minutes.

Trying to solve:

120 = 6.2t² + 12t +32

or

6.2t² + 12t - 88 = 0

Use quadratic formula to get

t=-4.8 or t=2.92 sec.

Reject t=-4.8 because it is not within interval [0,4].

**Answer this Question**

**Related Questions**

Pre-Calc - You are taking a road trip in a car without A/C. The temperture in ...

PHYSICS - Q1= An 85 cu.meter room. - How much energy required to heat room ...

Physics - A car leaves a city at 70 km/hr. After 15 minutes, another car follows...

chemistry - The radiator in your car uses either water or ethylene glycol (anti...

chem - The radiator in your car uses either water or ethylene glycol (anti-...

Physics - A vessel contains 10 kg of water and an unknown mass of ice at 0°C. ...

physics - In one room the radiator has a dark color (emissitivity = 0.818). It ...

algebra - A cup of coffee is heated to 180°F and placed in a room that maintains...

Calculus - The average temperature T(x), in oF, in a small office building ...

maths - When a cake is removed from an oven its temperature is measured at 300 ...