The answer to the question
Answer:
what do you need help with
Let x be the length and y be the width2x + 2y = 40x + y = 20change that into y = mx + b formy= 20 – x
Area =xy = x (20-x) = 20x - x^2Area=-x^2+20xcomplete the square:Area=-(x^2 – 20x + 100) +100=-(x - 10)^2 + 100This is an calculation of a parabola that opens downward with vertex at (10,100), which means maximum area of 100 happens when x, the length=10)Dimensions of the rectangle with maximum area? 10 yds. by 10 yds., a square.
Answer:
2
Step-by-step explanation:
-2y+10+2y-8
-2y+2y+10-8
10-8
2
Answer and explanation:
V originally equals u + at, but when you plug in u, a, and t you get a number answer.
u = 2
a = 15
t = 1/5
Rewrite the expression with the numbers plugged in.
V = (2) + (15)(1/5) <em>Multiply 15 by 1/5</em>
V = 2 + 3 <em>Add 2 and 3 together</em>
V = 5
<h2><u>So V would equal 5</u></h2>
