Step-by-step explanation:

For any quadratic equation
, the quadratic formula is as follows:

From the given quadratic equation, we know that
,
and
. Plugging in these values into the quadratic formula gives us the following:



Answer:
3.5 in
Step-by-step explanation:
1in=6Miles
21=Miles
1in=6
1in=12
1in=18
.5in=3
____________
3.5IN = 21MILES
Answer is 7 ::::::::::::::::::::::::::::0
Answer:
the number of of litres of paint to the nearest litre for 1000 bars is 1 litre
Step-by-step explanation:
Given that:
1000 cylindrical metal bars have :
a length of 120 m
and a diameter of 0.2 m
The volume of the cylindrical bar can be calculated by the formula:

where ;
radius 

r = 0.1 m
the length of the cylindrical metal bars is equal to the height of the metal bar = 120 m
Thus the volume can now be calculated as follows:

V = 3.77 m³
So; from the given information.
One litre of paint will cover 4m³
and we want to find how many litres of paint will be used for the 1000 cylindrical bars.
If 1 litre = 4m³
Then x litre = 3.77 m³
4x = 1 × 3.77

x = 0.9425 litres
x = 1 litres to the nearest litres.
Thus ; the number of of litres of paint to the nearest litre for 1000 bars is 1 litre