For this case we have a quadratic equation of the form:

Where:

We find the roots:

The roots are:

Answer:

Answer:
(a) 
(b)The boiling point of water in Celsius scale is 100°C.
(c)The setting in Celsius scale is 26.7°C.
Step-by-step explanation:
Given that,the formula is
......(1)
(a)
Given that,

[ subtracting 32 from both sides]


......(2) [Multiplying
]

(b)
Given that, the boiling point of water is 212°F.
Putting F=212 in equation (2)




The boiling point of water is 100°C.
(c)
Given that, a house thermostat is set at 80 degree.
Putting F=80 in equation (2)



The setting in Celsius scale is 26.7°C.
Answer:
1. 79.2 inches
2. 114
3. 55.2
4. 2599.992
5. 2350
Step-by-step explanation:
Yw
Answer:
7 hours
Step-by-step explanation:
12hrs=1116kms
1hr=1116÷12
1hr=93kms
Xhrs=651kms
Xhrs=(651÷93) ×1
=7×1
=7hrs