18.100
<u><em>If you ask '' How do I solve these questions?'' I say:</em></u>
<em>We look at the tens digit to find the nearest hundred. If the number is 1,2,3 or 4, the tens and ones digit is reset. If it is 5,6,7,8 or 9, another hundred is added to the hundreds place of the number. The remaining tens and hundreds digits are reset</em>.
Answer:
Rectangular area as a function of x : A(x) = 200*x + 2*x²
A(max) = 5000 m²
Dimensions:
x = 50 m
l = 100 m
Step-by-step explanation:
"x" is the length of the perpendicular side to the wall of the rectangular area to be fenced, and we call "l" the other side (parallel to the wall of the barn) then:
A(r) = x* l and the perimeter of the rectangular shape is
P = 2*x + 2*l but we won´t use any fencing material along the wll of the barn therefore
P = 2*x + l ⇒ 200 = 2*x + l ⇒ l = 200 - 2*x (1)
And the rectangular area as a function of x is:
A(x) = x * ( 200 - 2*x) ⇒ A(x) = 200*x + 2*x²
Taking derivatives on both sides of the equation we get:
A´(x) = 200 - 4*x ⇒ A´= 0
Then 200 - 4*x = 0 ⇒ 4*x = 200 ⇒ x = 50 m
We find the l value, plugging the value of x in equation (1)
l = 200 - 2*x ⇒ l = 200 - 2*50 ⇒ l = 100 m
A(max) = 100*50
A(max) = 5000 m²
Answer:
The function is y = 17000 + 820 x
where: y = price of the car.
x = time in years.
After 3.3 years, the car will cost $19706.
Step-by-step explanation:
Hi there!
Let y be the price of the car.
After the first year, the price of the car will be:
y = 17000 + 820
After the second year:
y = 17000 + 820 + 820 or 17000 + 820(2)
After the third year:
y = 17000 + 820 + 820 + 820 or 17000 + 820(3)
Then, after x years:
y = 17000 + 820 x
After 3.3 year, the car will cost:
y = 17000 + 820(3.3) = 19706
After 3.3 years, the car will cost $19706.
Answer:
-4 degrees c
Step-by-step explanation:
Ⓗⓘ ⓣⓗⓔⓡⓔ
Well, 8-12=-4
So the answer is -4 degrees c
(っ◔◡◔)っ ♥ Hope this helped! Have a great day! :) ♥
BTW, brainliest would be greatly appreciated, I only need one more before I advance, thanks!