Please help me out! I have spent over 127 points on these circumference questions so far... :(
1 answer:
Answer:
The circumference of the green circle is about 138.23 meters.
The circumference of the blue circle is about 69.115 meters.
Step-by-step explanation:
Considering 22 m as the green circle radius and 11 m as the blue circle radius:
The circumference of the green circle is about:
The circumference of the blue circle is about:
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Answer with explanation:
The given function is:
y=x³+3 x²-x-3
=x²(x+3) -1(x+3)
= (x²-1)(x+3)
= (x-1)(x+1)(x+3)
Put, y=0 , gives
⇒ (x-1)(x+1)(x+3)=0
≡→x-1=0 ∧ → x+1=0 ∧→x+3=0
≡x=1, -1, -3
So, there are three breaking points in the curve.
1.⇒Putting, x=1 , in the function
y(1)=1³+3×1²-1 -3
=1 +3-4
=0
2. ⇒Putting, x=-1 , in the function
y(-1)=(-1)³+3×(-1)²-(-1) -3
= -1 +3+1-3
=0
3.⇒Putting, x=-3 , in the function
y(-3)=(-3)³+3×(-3)²-(-3) -3
=-27+27+3-3
=0
So, These are points where curve crosses the X axis, which are , (1,0),(-1,0) and (-3,0).
But turning points are those points where curve takes the turn , that is, if it is increasing function then it starts decreasing or becomes constant function after that point, and if it is a decreasing function then it becomes increasing or constant function.
So,turning points of the given function by looking at the graph of the function by approximation
Option B:→(-2,3) and (0, -3)
Answer:
Each boy receive $3.75 and Each girl receive $7.5
Step-by-step explanation:
Given : Thirty dollars is to be divided among three girls and two boys so that each of the girls receives twice as much as each of the boys.
To Find: How much does each receive?
Solution :
Let each boy gets $x
Since we are given that each of the girls receives twice as much as each of the boys
So, each girl receive amount = 2x
Since there are 3 girls .
So, 3 girls received the amount = 3*(2x)=6x
Now each boy gets x amount
So, 2 boys get amount = 2*x =2x
Since thirty dollars are divided among them .
So,
Thus each boy gets $3.75
Each girl receive amount = 2x = 2*3.75= $7.5
Hence Each boy receive $3.75 and Each girl receive $7.5