Answer:
168
Step-by-step explanation:
Stefan sells Jin a bicycle for $150 and a helmet for $18. The total cost for Jin is 140% of what
Stefan spent originally to buy the bike and helmet. How much did Stefan spend originally? How
much money did he make by selling the bicycle and helmet to Jin?
Stefan originally spent $ because you said "Stefan spent originally to buy the bike and helmet" so the answer would be 168
Answer:
120
Step-by-step explanation:
an easy way of looking at it is
5x8x3
Answer:
![m = \frac{d - b}{c - a} \: where \: c \ne \: a](https://tex.z-dn.net/?f=m%20%3D%20%20%5Cfrac%7Bd%20-%20b%7D%7Bc%20-%20a%7D%20%20%5C%3A%20where%20%5C%3A%20c%20%5Cne%20%5C%3A%20a)
Step-by-step explanation:
We use the slope formula:
![m = \frac{y_2-y_1}{x_2-x_1}](https://tex.z-dn.net/?f=m%20%3D%20%20%5Cfrac%7By_2-y_1%7D%7Bx_2-x_1%7D%20)
The slope or gradient is not very difficult to calculate.
The given points are:
A(a,b) and B(c,d)
We substitute these points into the formula to get:
![m = \frac{d - b}{c - a} \: where \: c \ne \: a](https://tex.z-dn.net/?f=m%20%3D%20%20%5Cfrac%7Bd%20-%20b%7D%7Bc%20-%20a%7D%20%20%5C%3A%20where%20%5C%3A%20c%20%5Cne%20%5C%3A%20a)
Note that this is also the same as:
![m = \frac{b - d}{a- c} \: where \: c \ne \: a](https://tex.z-dn.net/?f=m%20%3D%20%20%5Cfrac%7Bb%20-%20d%7D%7Ba-%20c%7D%20%20%5C%3A%20where%20%5C%3A%20c%20%5Cne%20%5C%3A%20a)
Answer:
a = 0.4 and b=1.6
Step-by-step explanation:
Both expressions are simply divided
(2x + 8y = 60) ÷ (ax + by = 12)
60÷12 = 5, Hence coefficient of x and y in the bigger equation is divided by 5 to find a and b
2/5 = 0.4 = a
8/5= 1.6 = b