Answer:
C. The y-intercept is (0, 4).
Step-by-step explanation:
The graph of f(x) = 4 is a straight line parallel to the x-axis passing through the point (0, 4).
We will have to use proportions:
![\frac{42.9}{253.1} = \frac{6.2}{x}](https://tex.z-dn.net/?f=%20%5Cfrac%7B42.9%7D%7B253.1%7D%20%20%3D%20%20%5Cfrac%7B6.2%7D%7Bx%7D%20)
Cross multiplying we get
![42.9x = 6.2 \times 253.1](https://tex.z-dn.net/?f=42.9x%20%3D%206.2%20%5Ctimes%20253.1)
Now divide:
![x = \frac{6.2 \times 253.1}{42.9}](https://tex.z-dn.net/?f=x%20%3D%20%20%5Cfrac%7B6.2%20%5Ctimes%20253.1%7D%7B42.9%7D%20)
Solve to tenths place we get
![x = 36.6](https://tex.z-dn.net/?f=x%20%3D%2036.6)
The woman casts a 36.6 ft long shadow.
Step-by-step explanation:
20x+5=24x-1
4x=6
x=3/2
Answer:
Both are rational.
Step-by-step explanation:
As a rational number can be written in the form p/q where p,q are co-prime integers, let a=p1/q1 b=p2/q2.
And we know the product of two integers is an integer
p1q2, p2q1 are integers. And the sum or difference of two integers is rational, rather being specific, it is an integer.
Thus a+b and a-b is rational.
Step-by-step explanation:
solve f(x) by supposing it has y and and then interchange it with x .
hope this is helpful