Since, Ladder makes an angle 60
∘
with the floor as shown in figure.
∴ ladder makes 120
∘
angle with the positive direction of x-axis.
⇒ slope of ladder =tan120
∘
=tan(90
∘
+30
∘
)=−cot30
∘
=−
3
Option A:
I and III only the answers.
Solution:
Let white vases be "w" and red vases be "r".
Cost of total flower = $336
Cost of each vase = $11
Total cost of the centerpieces
= Cost of (white vases + red vases) + Cost of flowers
= 11(w + r) + 336
= 11w + 11r + 336
Total cost of the centerpieces = 11w + 11r + 336 = 11(w + r) + 336
Therefore I and III only the answers.
Option A is the correct answer.
Answer:
D.
Step-by-step explanation:
72-44
Answer:
1/4=2/8=4/16=8/32
Step-by-step explanation:
For the largest area, half the fence is used parallel to the river, and the other half is used for the two ends of the rectangular space.
The dimensions are 475 m by 237.5 m.
_____
Let x represent the length along the river. Then the area (A) is found as
.. A = x*(950 -x)/2
This equation describes a parabola with its vertex (maximum) halfway between the zeros of x=0 and x=950. That is, the maximum area is achieved when half the fence is used parallel to the river.