Height = 18 cm
The base is half as long means as height
base = height/2 = 18/2 =9 cm.
Area= base*height = 18*9 =162 cm²
Area=162 cm²
Answer:
Step-by-step explanation:
10x+y = 10y+x +36
x+y=14
9x-9y=36
x-y=4
x= 14-y
14-2y==4
10=2y
y=5
x=9
Answer:
Step-by-step explanation:
The perimeter of a circle is the circumference of the circle. To find it, use the formula .
The diameter here is two times the radius x, d = 2x. But here it has been decreased by 2 so it becomes d = 2x - 2.
Substitute into the formula.
we have
we know that
see the graph
Let
<u>Find the slope BC</u>
The slope is positive
so
The graph is increasing in the interval----------> (10, ∞)
<u>Find the slope AB</u>
The slope is negative
so
The graph is decreasing in the interval----------> (-∞,10)
therefore
<u>the answer is the option</u>
D. (10, ∞)