Add the ratio: 8 + 12 =20
Divide total bike by that: 100/20 = 5
Multiply each part of the ratio by that:
8 x5 = 40
12 x 5 = 60
40 bikes are purple
60 bikes are red
Answer: 40
Step-by-step explanation:
Purple:Red = 8:12
Purple bikes = 8/20 x 100 = 40
b) Write down the equation of the line which is parallel to the line y=4-5x passing through (0,-1)
Answer:
The line equation in standard form is 2x – 3y = 19.
Explanation:
Given:
The point (8,-1) and (2,-5) in standard form
The point slope form is y + 1 = 2/3(x-8).
To find:
Equation of the line
Solution:
Now, we have line equation in point slope form, we have to convert it into standard form i.e. ax + by = c
Then, let us simplify the above equation.
3(y + 1) = 2(x – 8)
3y + 3 = 2x – 16
2x – 3y = 16 + 3
2x – 3y = 19
Hence, the line equation in standard form is 2x – 3y = 19.