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hammer [34]
3 years ago
13

Help please i’m confused

Mathematics
1 answer:
morpeh [17]3 years ago
7 0

Answer:

7/10 pi (radians)

Step-by-step explanation:

The formula for sector area is (angle * r^2)/2

140pi = angle*r^2/2

multiply both sides by 2

280pi = angle * r^2

r = 20 cm (substitute)

280pi = angle * (20)^2

280pi = angle * 400

Divide both sides by 400

7/10 pi = angle

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Expression without an equal sign with at least one variable

Hope this helps!

5 0
3 years ago
Determine if the two lines y=2x-3/2 and y=-2x+2/3 are parallel, perpendicular or neither
8_murik_8 [283]
They’re both perpendicular, I used a graphing calculator to get the interpret answer
5 0
3 years ago
If the diameter of Nicole's bike wheel is 90cm, what is the approximate distance the wheel travels in one revolution?
sineoko [7]

Answer:

282.7 cm

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4 0
3 years ago
If someone could explain what i plug into f??
Alexxx [7]
You are correct with part i with what you did so far, but you need to finish it.
What is function f?

i.
\dfrac{f(9) - f(2)}{9 - 2}

ii.
\dfrac{f(1) - f(0)}{1 - 0}

iii.
\dfrac{f(9) - f(-7)}{9 - (-7)}
3 0
3 years ago
(4y 2 – 5y) + (3y – 7y 2) – (2y 2 + 6y – 5)<br> Simplify.
Elan Coil [88]
<span>Equation at the end of step  1  :</span><span><span> (((4•(y2))-5y)+(3y-(7•(y2))))-((2y2+6y)-5) </span><span> Step  2  :</span></span><span>Equation at the end of step  2  :</span><span><span> (((4•(y2))-5y)+(3y-7y2))-(2y2+6y-5) </span><span> Step  3  :</span></span><span>Equation at the end of step  3  :</span><span> ((22y2 - 5y) + (3y - 7y2)) - (2y2 + 6y - 5) </span><span> Step  4  :</span><span> Step  5  :</span>Pulling out like terms :

<span> 5.1 </span>    Pull out like factors :

  <span> -5y2 - 8y + 5</span>  =  <span> -1 • (5y2 + 8y - 5)</span> 



I hope tht help

4 0
3 years ago
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