Here's the equation for the area of a semicircle: A = (πr²)/2
Based on this, let's solve for this area in terms of π (pi):
A = π(10²)/2 = 100π/2 = 50π
The area of the semicircle, I believe, is 50π. Hope this helps, let me know if I messed up!
Answer:
y = (-1)*2^(x + 1)
Step-by-step explanation:
This one is not a line. It is something raised to a power. In addition, there is an ugly minus sign somewhere.
First of all, every answer is some sort of power of 2. All of them are 2^x but we don't exactly know how x words. It is not a simple y = 2^x because the first one is - 4 not - 2.
So there is an extra power somehow.
Try
y = 2^(x + 1) That looks promising
x = 1
y = 2^(1 + 1)
y = 2^2
y = 4
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Try another one
x = 2
y = 2^(2 + 1)
y = 2^3
y = 8
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I think you'll find that the other two are well behaved. and come to the answer (except for the minus) as they should.
What about that minus.
y = (-1)*2^(x + 1) should give a minus y value for any term.
-2/3 is the slope of the line
<span>-2.9x + 5.4y = 140.94
answer is </span><span>y-intercept is 26.1
cause when </span><span>y-intercept x = 0
</span>-2.9(0)+ 5.4y = 140.94
<span>5.4 y = 140.94
y = 140.94 / 5.4
y = 26.1
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