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luda_lava [24]
3 years ago
7

The minute hand of a certain clock is 4 in long. Starting from the moment when the hand is pointing straight up, how fast is the

area of the sector that is swept out by the hand increasing at any instant during the next revolution of the hand?
Mathematics
1 answer:
aliya0001 [1]3 years ago
3 0
  <span>A = πr² * t/60 
dA/dt = πr²/60 = π*4²/60 = 4π/15

Hope this helps!
STSN</span>
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615.44 rounded to the nearest tenth
Whitepunk [10]
The answer is 615.4

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If A (-3, 4) is one endpoint of a segment and B(-4,7) is the midpoint of the segment, find the other endpoint.
Nutka1998 [239]

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8 0
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Please simplify, 50 points.
olga55 [171]

Answer:

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Step-by-step explanation:

4 0
3 years ago
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Define a substitution method to solve the followingsysten of equation of y=2x-3, x+y=1
Ivan
I will solve you system by substitution

y = 2x - 3 ; x + y = 1

→Step 1: Solve y = 2x - 3 for y

→Step 2: Substitute 2x - 3 for y in x + y = 1:

x + y = 1 

x + 2x- 3 = 1

3x - 3 = 1 (Simplify both sides of the equation)

3x - 3  + 3 = 1 + 3 (Add 3 both sides)

3x = 4 
 
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x = 4/3

→Step 3: Substitute 4/3 for x in y = 2x - 3:  

y = 2x - 3 

y = 2 (4/3) -3 

y = -1/3 (Simplify both sides of the equation)

Answer: 

x = 4/3 and y = -1/3

∫Hope that helps∫
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I believe it is A!!!!!

Step-by-step explanation:

I took the test E2020

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