D=RT
313.5=R4
divide by four
313.5/4=78.375
Therefore the answer is B
Note the equal sign. What you do to one side, you do to the other. Isolate the p. Do the opposite of PEMDAS.
first, subtract 5r from both sides
2p + 5r (-5r) = q (-5r)
2p = q - 5r
Next, divide 2 from both sides
(2p)/2 = (q - 5r)/2
p = (q/2) - (2.5r) is your answer
hope this helps
Answer:
Weight of Airplane will be 2416 pounds when it is carrying 64 gallons of fuel.
Step-by-step explanation:
Given:
20 gallons of fuel, the airplane weighs 2130 pounds
48 gallons of fuel, it weighs 2312 pounds
so we can say that we have 2 points of value.
Let the number of gallons of fuel be 'x'.
Eight of the airplane be denoted by 'y'.
So we can say that;
Now we know that;
weight (in pounds) of an airplane is a linear function of the amount of fuel ( in gallons) in its tank.
So we can say that;
where m⇒ slope
b⇒ intercept.
first we will find the slope:
Now we will find the intercept by substituting the values;
so we get the equation as;
Now we need to find airplane weighs if it is carrying 64 gallons of fuel(
Hence Weight of Airplane will be 2416 pounds when it is carrying 64 gallons of fuel.