You can make a ratio of red to overall colors and then that will give you the fraction, you might have to simplify it
Answer:
let the number of cows = x
let the number of chickens = y
since there are 42 heads:
x + y = 42
and since a cow has 4 legs, and a chicken has 2
4x + 2y = 144
from first equation:
x + y = 42
x = 42 - y (now, we will substitute this in the second equation)
4(42 - y) + 2y = 144
168 - 4y + 2y = 144
2y = 168 - 144
2y = 24
y = 12
now, we know the number of chickens. we will replace y with 12 in the first equation since it is more simpler
x + 12 = 42
x = 30
So, there are 30 cows and 12 chickens
Brainly it if you find the answer helpful
Answer:
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Step-by-step explanation:
Answer:
25 miles per hour
Step-by-step explanation:
Given
The joint variation can be represented as:
Where:
Required
Find V, when: 
We have:
Express as an equation
Where k is the constant of variation
Make k the subject
When:
We have:
When:
We have:
Substitute: and
Make V the subject
