Answer:
shorter = 17 longer = 85
Step-by-step explanation:
x = longer y = shorter
102 = x + y (whole pipe length, 102, = sum of the 2 pieces, x + y )
x = 5y (longer piece = 5 times length of shorter piece)
102 = 5y + y (substitute for x)
102 = 6y (solve for y)
y = 17
102 = x + 17 (sub what you got for y back into original equation + solve)
x = 85
A. 0.3
B. 0.8
C. 2.5
D. 3.2
Answer:
In 0.3 gallon of fuel, the car will travel 20 km.
A is the correct option.
Step-by-step explanation:
We have been given that in 1 gallon of fuel the car can travel 40 miles.
Now, 1 mile = 1.6 km.
Hence, in 1 gallon the car travel 40×1.6 = 64 km
Let the car will consume x gallons of fuel to travel 20 km.
Thus, we have the equation
ON solving for x
Therefore, in 0.3 gallon of fuel, the car will travel 20 km.
A is the correct option.
Answer: The car would need 0.3 gallons of fuel to travel 20km.
Step-by-step explanation: 40mile x 1.6km = 64km
1 gallon 1 mile 1 gallon
20km ÷ 64km = 0.3125
Answer: 7,823,000
Because 10 to the power of 3 means 1000, so 7823 times 1,000