Let x = speed and y = distance
y = x * 45
y = (x - 4) * 70
45x = 70x - 280
-25x = -280
x = 11.2
Put it back into the first equation:
y = 11.2 x 45
y = 504miles
Hope this helps! Any questions let me know :)
With more years of education, the annual salary should also increase
when someone is more educated, they are usually able to perform more difficult jobs and in turn get paid more money
Answer: Calvin has 13 quarters.
Step-by-step explanation:
Let Calvin have x quarters.
therefore amount of Calvin = 0.25 x [ 1 quarter = $0.25 ]
Number of dimes for Sara = x
[ Given that number of dimes of Sara = number of quarters of Calvin
Amount of dimes for Sasha = 0.1x [ 1 dime = $0.1 ]
Amount of Sasha without dime = $1.95 [ given]
total amount of Sasha = 1.95 =+ 0.1x
Since amount of Calvin and Sasha is same therefore
0.25x = 1.95 +0.1x
0.25x -0.1x = 1.95
0.15x = 1.95
x = 
x = 13
Answer:
Car B by 20km/hr
Step-by-step explanation:
well, we first calculate the speeds of both cars. there is an allocated dot along the 6 hour mark for the line graph of both cars. hence, using a time of 6 hours, we use their respective distances to produce an answer. car a has travelled 360 km while car v has travelled 480 km.
hence:
speed of car b = 480/6 = 80
speed of car a = 360/6 = 60
The answer to that is (x^4 y^6+1)(x^8 y^12-x^4 y^6+1