Answer:
Step-by-step explanation:
The formula for the remaining volume of fuel in a car's tank is expressed as;
V = I - E.D
where;
I is the initial volume of fuel,
E is the fuel efficiency, and;
D is the distance traveled.
Given
I = 30 litres
1m³ = 1000L
x = 30L
x = 30/1000
x = 0.03m³
I = 0.03m³
E = 100cm³/km
E = 100*10^-6m³/km
E = 10^-4m³/km
E = 10^-4m³/1000m
E = 10^-7m²
D = 120km
Convert km to metres
D = 120km = 120,000m
Substitute the results into the formula;
V = I - E.D
V = 0.03 - (10^-7)(120,000)
V = 0.03 - 0.012
V= 0.018 m³
Convert 0.018 m³ to litres
Since 1 m³ = 1000L
0.018 m³ = y
cross multiply;
y = 1000 * 0.018
y = 18 litres
Hence volume of fuel that remains in Carson's tank by the end of the drive is 18 litres
one day?
The number of trees that 20 men chop down in one day will be 70.
A ratio is a group of sequentially ordered numbers a and b expressed as a/b, where b is never equal to zero. When two objects are equal, a statement is said to be proportional.
If 8 men can chop down 28 trees in one day.
Let 'x' be the number of trees.
We know that the ratio of man and tree will remain constant. Then the equation is given as,
28 / 8 = 20 / x
Simplify the equation, then we have
8 / 28 = 20 / x
x = 20 (28 / 8)
x = 70
The number of trees that 20 men chop down in one day will be 70.
More about the ratio and the proportion link is given below.
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B. 3151 m^2
C. 2548 m^2
40 square feet
125.6 square feet
b. –6 – 6i
c. –12 – 10i
d. 12 + 10i
The answer is -12-10i
Given two complex numbers
First complex number = 3+2i ....(1)
Second Complex number = -9-8i..... (2)
Subtracting equation (1) from equation (2)
As this is a subtraction between complex numbers hence the Real part gets subtracted from the real part and the imaginary part gets subtracted from the imaginary part
( -9- 8i ) - ( 3 +2i )
= -9 -3 -8i - 2i
= -12 -10i
For more information please refer to the link given below