Need help please!!!!!!!
Answers
Answer:
First Option {-2 , 0 , 2}
Step-by-step explanation:
A critical point occurs when the derivative is 0 or undefined.
The function in the question is undefined at x = 2 and at x = -2 because if we put x = 2 or x = -2 the denominator becomes 0 hence anything divided by 0 is undefined, and the derivative equals 0 at x = 0 so the critical points are
{-2 , 0 , 2}
Use the quotient rule to find the derivative of the function then equal it to zero
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Answers
33.3% do notsing in the talent show.
What is a percentage?
The percentage is calculated by dividing the required value by the total value and multiplying by 100.
Example:
Required percentage value = a
total value = b
Percentage = a/b x 100
Example:
50% = 50/100 = 1/2
25% = 25/100 = 1/4
20% = 20/100 = 1/5
10% = 10/100 = 1/10
We have,
Total number of kids = 3
Number of kids who sang = 2
The number of kids who do notsing.
= 3 - 2
= 1
The percentage of kids who do not sing.
= 1/3 x 100
= 33.33%
Thus,
33.3% do notsing in the talent show.
Learn more about percentages here:
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convert to decimal the multiply by 100
Always
Never
Sometimes
Answers
Answer:
AB in terms of rays, can never be BA.
Step-by-step explanation:
AB and BA name the same ray.
No, this is never true. A ray starts from a point and move in a single direction to infinity.
So, if starting point is A and ray is moving towards B, so it will continue moving towards the points further from B.
Therefore, AB as in terms of rays, can never be BA.
Answers
amplitude: a = 40 inches / 2 = 20
f(x)=20cos(bx)+c
the value of c is 32... since the centre of the has been moved up 32 units
the minimum amplitude = 32 - 20 = 12
the maximum amplitude = 32 + 20 = 52
f(x)=20cos(bx)+32
if the curve takes 6 1/4 hours from low to high tides (9:15 am to 3:30 pm) then it will take 12 1/2 hours to complete a full cycle.
adjust the period by converting 12 1/2 hours to an angle measure.
360°/12 = 30°
30° / 12 = 15°
12 1/2 = 360° + 15° = 375°
f(x) = 20 cos(375°) + 32
f(x) = 20 * 0.97 + 32
f(x) = 19.4 + 32
f(x) = 51.4
The cosine function that models the variation is f(x) = 51.4
Calculations and Parameters:
To find the inches, we would subtract the value of 12 from 52 which would give us 40 inches.
The amplitude is 40/2
= 20
Hence,
f(x)=20cos(bx)+c
- c= 32
- the minimum amplitude = 12
- the maximum amplitude = 52
f(x)=20cos(bx)+32
if the curve takes 6 1/4 hours from low to high tides (9:15 am to 3:30 pm) then it will take 12 1/2 hours to complete a full cycle.
We make adjustments and convert
- 360°/12 = 30°
- 30° / 12 = 15°
- 12 1/2 = 360° + 15° = 375°
f(x) = 20 cos(375°) + 32
f(x) = 20 * 0.97 + 32
f(x) = 19.4 + 32
f(x) = 51.4
Read more about cosine functions here:
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Answers
Answer:4:7
Step-by-step explanation:
20:35
/5 on both sides.
4:7
Answers
Answers
You know the worker worked a total of 20 days, some at $80 per day, and some at $40 per day. After the 20 days, the worker was paid $1320.
x = days paid full time ($80)
y = days paid half time ($40)
you have two unknowns, so you'll need two equations to solve, from the problem statement, we can derive the following relationships:
($80)x + ($40)y = $1320
x + y = 20 days
x = 20 - y
80(20 - y) + 40y = 1320
1600 - 80y + 40y = 1320
1600 - 40y = 1320
1600 - 1320 = 40y
280 = 40y
y = 280/40 = 7
thus 7 days paid half time (i.e. slow days)
verify your solution is correct
y = 7
x = 20 - 7 = 13
80(13) + 40(7) = 1320 [OK]