Answer:

Step-by-step explanation:
7y⁴ = 7y²(z - 3ax)
Divide both sides by 7y².
y² = z - 3ax
Add 3ax to both sides. Subtract y² from both sides.
3ax = z - y²
Divide both sides by 3a.

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The number that occurs most often
Perimeter = 2(10+20) = 60feet
60ft fencing material is needed
The y-intercept of the given function is (0, -5)
<h3>y-intercept of an equation</h3>
Given the equation below
y=[x-4| +1
The y-intercept is the point where the value of x is zero. Substitute x = 0 into the function to have;
y = 0 - 4- 1
y = 0 - 5
y = -5
Hence the y-intercept of the given function is (0, -5)
Learn more on y-intercept here: brainly.com/question/24363347
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