Answer:
Mark me as brainlist
Step-by-step explanation:
Math Tutor or Teacher: amanpreet.jaggi
Hi,
Let width = w
Length = l
now according to the question
l = 3w+7
Perimeter = 2(w+l) = 462 .... equation 1
Substituting values of l and w in equation 1 we get
462 = 2(w+3w+7)
231 = 4w+7
224 = 4w
w = 56 yards
Now
l = 3w+7
l = 3*56+7
l=175 yards
So width = 56 yards and length = 175 yards
Regards
Aman
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<h3>Given</h3>
Two positive numbers x and y such that xy = 192
<h3>Find</h3>
The values that minimize x + 3y
<h3>Solution</h3>
y = 192/x . . . . . solve for y
f(x) = x + 3y
f(x) = x + 3(192/x) . . . . . the function we want to minimize
We can find the x that minimizes of f(x) by setting the derivative of f(x) to zero.
... f'(x) = 1 - 576/x² = 0
... 576 = x² . . . . . . . . . . . . multiply by x², add 576
... √576 = x = 24 . . . . . . . take the square root
... y = 192/24 = 8 . . . . . . . find the value of y using the above equation for y
The first number is 24.
The second number is 8.
Answer:
x-axis
Step-by-step explanation:
