The answer would be the first one 32km
Answer:
Step-by-step explanation:
^4+(x^2-4)^5[\frac{d}{dx}(3x+4)^4]](https://tex.z-dn.net/?f=y%27%3D%5B%5Cfrac%7Bd%7D%7Bdx%7D%28x%5E2-4%29%5E5%5D%283x%2B4%29%5E4%2B%28x%5E2-4%29%5E5%5B%5Cfrac%7Bd%7D%7Bdx%7D%283x%2B4%29%5E4%5D)
Answer:
290
Step-by-step explanation:
Answer:
$76.8
Step-by-step explanation:
As, So 20% of 64 will be the markup price.
So 20/100 x 64 = $12.8
Now Markup price = $12.8
And The retail price = markup price + original price = $12.8 + $64 = $76.8
The answer
<span>the true answer is A) 4x^2+52x+165=320; x = 2.5
proof:
since </span><span>they want to limit its area to 320 in^2
x must be equal 2.5, because </span>4.(2.5)^2+52(2.5)+165= 25+130+165=320;
the main rule of the area of a triangle is
A= (base x height )/2
let be b the base and h the height
so h=20- 6b
so 50= b x( 20-6b) /2, implies 100/b = 20 - 6b
if b=x, we have 100= 20x -6x² this is equivalent to 6x² - 20x = -100
so the answer is
<span>D) None of the choices are correct.
</span>
<span>the largest dimensions that can be used for the fountain are
</span>
<span>B) x^2+8x+16=800
C) x^2+16=800
</span>
proof
x^2+8x+16=x^2+8x+4², 4² is the area of the square fountain, and x^2+8x should be the remaining of the area, t<span>he total space that the fountain and sidewalk can use is 800, it is less than 800 ft^2.
</span>Use the same method for. x^2+16=800
