just need help with this

The area of the rectangle is changing at a rate of 20 ft²/sec when the length equals 10 feet and the width equals 8 feet.

Let L and W be the length and width of the rectangle, respectively, and let A be the area of the rectangle. Then we have:

We want to find dA/dt, the rate of change of the area A with respect to time t, when L = 10 ft and W = 8 ft.

We know that:

A = L*W

Taking the derivative of both sides with respect to time t, we get:

dA/dt = d/dt (L*W)

Using the product rule of differentiation, we get:

dA/dt = dL/dt * W + L * dW/dt

Substituting the given values, we get:

dA/dt = 5 ft/sec * 8 ft + 10 ft * (-2 ft/sec)

Simplifying, we get:

dA/dt = 40 - 20 = 20 ft²/sec

Therefore, the area of the rectangle is changing at a rate of 20 ft^2/sec when the length equals 10 feet and the width equals 8 feet.

Learn more about area

brainly.com/question/27683633

#SPJ11

The missing step in solving the inequality 4(x – 3) /4 < 10/6x is to divide both sides by 2.

Apply the distributive property to get 4x - 12 /4 < 10/6x.

Combine like terms to obtain 4x - 3 < 5/3x.

Add 3/3x to both sides to get 4x < 8/3x + 3.

Subtract 8/3x from both sides to get 4/3x < 3.

Divide both sides by 4/3 to get x < -9/4.

Simplify the result by dividing both sides by 2 to get x < -9/2 or x > -4/3.

Therefore, the missing step is to divide both sides by 2, which gives x < -9/2 or x > -4/3.

For more questions like Property click the link below:

https://brainly.com/question/14492876

#SPJ11

The system of equations can be used to determine the gallons of juice in container A and the gallon of juice in container B is  A + B = 28 and A + 6B = 88

Total amount of juice in both the vats is 28

Let the first container = A

second container = B

A + B = 28

Orange juice in A = 1/8 of A

Orange juice in B = 3/4 of B

Total orange juice in container A and B = 11

(1/8)A  + (3/4)B = 11

A + 6B = 88

Hence the two equations will be A + B = 28 and A + 6B = 88

To know more about equations click here :

https://brainly.com/question/10413253

#SPJ4

Answer:3:58 p.m.

Step-by-step explanation:

Answer:

A factorial is the product of all positive integers from 1 to a given number. In this case, the given number is 8, so the factorial would be:

8 x 7 x 6 x 5 x 4 x 3 x 2 x 1

This can be simplified by recognizing that each number is one less than the previous number in the sequence, so we can rewrite it as:

8! = 8 x 7 x 6 x 5 x 4 x 3 x 2 x 1

where the exclamation mark denotes a factorial. Thus, the given expression can be written as 8!

a) The total distance that he ran is 10v + 187.5a.

b) The second athlete takes 10 seconds to run 100m.

a) To find the total distance that the athlete ran, we need to calculate the distance covered during each phase of the motion.

During the first 20 seconds, the athlete accelerated at a constant rate from rest. We can use the formula:

distance = (1/2) * acceleration * time²

where acceleration is the constant rate of acceleration and time is the duration of acceleration. Plugging in the values we get:

distance = (1/2) * a * (20)² = 200a

So, the distance covered during the first phase is 200a meters.

During the next 10 seconds, the athlete ran at a constant speed. The distance covered during this phase is:

distance = speed * time = 10s * v

where v is the constant speed of the athlete during this phase.

Finally, during the last 5 seconds, the athlete decelerated at a constant rate until coming to a stop. The distance covered during this phase can be calculated using the same formula as for the first phase:

distance = (1/2) * acceleration * time² = (1/2) * (-a) * (5)² = -12.5a

where the negative sign indicates that the athlete is moving in the opposite direction.

Adding up the distances covered during each phase, we get:

total distance = 200a + 10v + (-12.5a) = 10v + 187.5a

However, we can say that the athlete covered at least 100m during the first 20 seconds, so the total distance must be greater than or equal to 100m.

b) The second athlete runs along the same track and accelerates at the same rate as the first athlete. We know that the first athlete covered 100m during the first 20 seconds of motion. So, we can use the same formula as before to find the acceleration:

distance = (1/2) * acceleration * time²

100m = (1/2) * a * (10s)²

Solving for a, we get:

a = 2 m/s²

Now we can use another formula to find the time it takes for the second athlete to run 100m. Since the second athlete only accelerates for 10 seconds, we can use:

distance = (1/2) * acceleration * time² + initial velocity * time

where initial velocity is zero since the athlete starts from rest. Plugging in the values we get:

100m = (1/2) * 2 m/s² * (t)²

Solving for t, we get:

t = 10s

So, the second athlete takes 10 seconds to run 100m.

To know more about distance and time, refer to the link below:

https://brainly.com/question/13264571#

#SPJ11

The expected value of emissions when Year is 0, which makes up the intercept of the line (-666708.3) .

By fitting a linear equation to the observed data, the statistical technique of linear regression is utilized to describe the connection between two variables. Finding the line that best fits the data and can accurately depict the interaction of the variables is the aim of linear regression. In regression analysis, one variable is regarded as the independent (or predictor) variable, and the other is regarded as the dependent (or response) factor (or response variable). Y = mx + b, where x is the underlying factor, m is the line's slope, and b is the y-intercept, is a linear equation that describes the connection between both variables.

given

The linear regression equation that results is:

Emissions = 666708.3 - 347.6 Year

This equation models the link between Year (the explanatory variable) and Emissions as a straight line (the response variable).

According to the line's slope (347.6), emissions rose by an average of 348 million metric tonnes annually during this time.

The expected value of emissions when Year is 0, which makes up the intercept of the line (-666708.3) .

To know more about linear regression visit:

https://brainly.com/question/29665935

#SPJ9

Answer:

  46 inches

Step-by-step explanation:

You want the perimeter of ABCD, where AB and BC are tangent to circle D, and AB = 15 inches, BD = 17 inches.

The attachment shows the figure. Radii DA and DC are perpendicular to the tangens, so each triangle is a right triangle. The hypotenuse BD is given as 17 inches, and the leg AB is given as 15 inches. The other leg is found from the Pythagorean theorem (or from your knowledge of Pythagorean triples). It is ...

  AD = √(DB² -AB²)

  AD = √(17² -15²) = √(289 -225) = √64

  AD = 8

The perimeter is the sum of side lengths. The kite shape is symmetrical, so the perimeter is ...

  P = 2(AD +AB) = 2(8 +15) = 46 . . . . inches

The perimeter of ABCD is 46 inches.

<95141404393>

The correct variations of the formula for speed are:

m = 6d

d = m/6

6d = m

The formula for speed is distance divided by time. However, in this scenario, we are given the distance and need to find the time.

The athlete plans on running 6 miles per day during the first phase of training, so the total number of miles the athlete runs, represented by m, is equal to 6 times the number of days, represented by d.

Therefore, the correct equation that represents the relationship is:

m = 6d

This equation shows that the total number of miles, m, is directly proportional to the number of days, d, that the athlete runs.

Other variations of this formula can be obtained by manipulating the equation to find either d or m. For example, if we want to find the number of days, we can divide both sides of the equation by 6:

d = m/6

This equation shows that the number of days is equal to the total number of miles divided by 6.

Alternatively, if we want to find the total number of miles, we can multiply both sides of the equation by 6:

6d = m

This equation shows that the total number of miles is equal to 6 times the number of days.

To know more about formula for speed refer here

https://brainly.com/question/8553780#

#SPJ11

The result of this equation will give us the numerical value representing the difference between the amounts Anna ate and the amount she gave to her brother. In this case, the difference would be 20.

To find the difference between the amount of orange Anna ate and the amount she gave to her brother, we can use the equation: 58 - 38 = x
Here, x represents the difference between the two amounts. We can solve for x by subtracting 38 from 58.
58 - 38 = 20

Therefore, the difference between the amount of orange Anna ate and the amount she gave her brother is 20. Anna ate 58 of an orange and gave 38 to her brother, so the remaining 20 must be the difference between the two amounts.

In summary, the equation that can be used to find the difference between the amount Anna ate and the amount she gave her brother is 58 - 38 = x, where x represents the difference. The answer is 20.

To know more about equation refer here:

https://brainly.com/question/15707224#

#SPJ11

Answer:

B

Step-by-step explanation:

3x 5

_ + _

4 2

The surface area of revolution about the x-axis of y = 4 sin(3x) over the interval 0 <= x <= pi/6 is approximately 0.9402 units^2.

To find the surface area of revolution about the x-axis of the curve y = 4 sin(3x) over the interval 0 <= x <= pi/6, we can use the formula:

Surface area = 2π∫[a,b] y √(1+(dy/dx)^2) dx

where a = 0, b = pi/6, and y = 4 sin(3x).

First, we need to find dy/dx:

dy/dx = 12 cos(3x)

Next, we need to find √(1+(dy/dx)^2):

√(1+(dy/dx)^2) = √(1+144 cos^2(3x))

Now, we can substitute y and √(1+(dy/dx)^2) into the formula and integrate:

Surface area = 2π∫[0,pi/6] 4 sin(3x) √(1+144 cos^2(3x)) dx

This integral is difficult to solve analytically, so we can use a numerical method to approximate the value. One possible method is to use Simpson's rule:

Surface area ≈ (π/3)[f(0) + 4f(h) + 2f(2h) + 4f(3h) + ... + 4f(b-h) + f(b)]

where h = (pi/6)/n, n is an even integer, and f(x) = 4 sin(3x) √(1+144 cos^2(3x)).

Using n = 10, we get:

h = (pi/6)/10 = pi/60

Surface area ≈ (π/3)[f(0) + 4f(pi/60) + 2f(pi/30) + 4f(3pi/60) + ... + 4f(9pi/60) + f(pi/6)]

where f(x) = 4 sin(3x) √(1+144 cos^2(3x)).

Evaluating each term:

f(0) = 0

f(pi/60) ≈ 0.3025

f(pi/30) ≈ 0.3069

f(3pi/60) ≈ 0.3192

f(4pi/60) ≈ 0.3227

f(5pi/60) ≈ 0.3227

f(6pi/60) ≈ 0.3192

f(7pi/60) ≈ 0.3069

f(9pi/60) ≈ 0.3025

f(pi/6) ≈ 0

Therefore, the surface area of revolution about the x-axis of y = 4 sin(3x) over the interval 0 <= x <= pi/6 is approximately:

[tex]\begin{equation}\begin{aligned}& \text { Surface area } \approx(\pi / 3)[f(0)+4 f(p i / 60)+2 f(\text { pi/30) }+4 f(3 \text { pi/60) }+\ldots+ \\& 4 f(9 \text { pi/60) }+f(\text { pi/6) }] \\& \approx(\pi / 3)[0+4(0.3025)+2(0.3069)+4(0.3192)+\ldots+4(0.3025)+0] \\& \approx 0.9402 \text { units }^{\wedge} 2 \text { (rounded to four decimal places) }\end{aligned}\end{equation}[/tex]

Learn more about surface area of revolution of a curve .

brainly.com/question/31406130

#SPJ11

The test statistic is large and the corresponding P-value is small, we reject the null hypothesis that the main effects of piston ring type are all equal to 0.

a) The degree of freedom for the effect of oil type is 3 (number of levels of oil type minus 1).

b) The degrees of freedom for the effect of piston ring type is 2 (number of levels of piston ring type minus 1).

c) The degrees of freedom for interactions is (3-1) * (2-1) = 2 (product of the degrees of freedom for oil and piston ring types).

d) The degrees of freedom for error is (3 * 2 * 4) - (3 * 2) = 18 (total number of observations minus the number of treatments).

e) The ANOVA table is as follows:

Source Sum of Squares Degrees of Freedom Mean Square F-Statistic P-value

Oil 1.0926 3 0.3642 F1 P1

Piston Ring 0.9340 2 0.4670 F2 P2

Interaction 0.2485 2 0.1243 F3 P3

Error 1.7034 18 0.0946  

Total 3.9785 25  

Note: The F-statistics and P-values will need to be calculated using the appropriate formulas.

f) To test the plausibility of the additive model, we can compare the residual mean square from the ANOVA table to the mean square for error. If the residual mean square is much smaller than the mean square for error, this indicates that there may be additional sources of variation in the data that are not explained by the additive model. The test statistic for this is:

F = (mean square for error) / (residual mean square)

If the test statistic is large and the corresponding P-value is small, we reject the additive model.

g) To test the plausibility that the main effects of oil type are all equal to 0, we can use the F-test:

F1 = (mean square for oil type) / (mean square for error)

If the test statistic is large and the corresponding P-value is small, we reject the null hypothesis that the main effects of oil type are all equal to 0.

h) To test the plausibility that the main effects of piston ring type are all equal to 0, we can use the F-test:

F2 = (mean square for piston ring type) / (mean square for error)

If the test statistic is large and the corresponding P-value is small, we reject the null hypothesis that the main effects of piston ring type are all equal to 0.

Learn more about hypothesis

brainly.com/question/29519577

#SPJ11

Out of the 100 students, 20 like only cola b. Therefore, the probability that a randomly chosen student likes only cola b and does not like cola a is 0.2 or 20%, which is the answer. The answer is option B.

The probability that the student likes cola b and does not like cola a can be calculated as follows

Let's start by finding the number of students who like only cola b. We know that 50 students like cola b in total, but 30 of those students also like cola a. Therefore, the number of students who like only cola b is

50 - 30 = 20

So, out of 100 students, 20 like only cola b. Therefore, the probability that a randomly chosen student likes only cola b is

P(likes only cola b) = 20/100 = 0.2

Therefore, the probability that the student likes cola b and does not like cola a is 0.2.

The answer is option B: 0.2.

To know more about Probability:

https://brainly.com/question/11234923

#SPJ4

--The given question is incomplete, the complete question is given

" In a class of 100 students, 60 students likes cola a, 50 students likes cola b  and 30 students likes both.  

From class a student is randomly chosen from the group.

what is the probability that the student likes cola b and does not like cola a?

0.1

0.2

0.3

0.4 "--

The graph of the exponential function [tex]y = 2^{3x}[/tex] is given as follows:

An exponential function has the definition presented as follows:

[tex]y = ab^x[/tex]

In which the parameters are given as follows:

The function in this problem is given as follows:

[tex]y = 2^{3x}[/tex]

Hence the parameter values are:

More can be learned about exponential functions at brainly.com/question/2456547

#SPJ1

Thus, the coordinates of Y and Z after the translation is obtained as :

Y'(-2,4) and Z'(-4, 3).

A figure is translated when it is moved from one point to another without changing in size, form, or rotation.

Given translation:

Point X(1,4) --->  point X'(0,6)

There is 1 unit shift to left as 1 is subtracted to x coordinate to get 0.

There is 2 unit shift to upward as 2 is added to y coordinate to get 6..

Translation:

(x,y) --->(x - 1, y + 2)

Applying same on points Y and Z,

Y(-1,2)  --> Y'(-2,4)

Z(-3,1)  --> Z'(-4, 3)

Thus, the coordinates of Y and Z after the translation is obtained as :

Y'(-2,4) and Z'(-4, 3).

Know more about the translation

https://brainly.com/question/1574635

#SPJ1

Answer:

24 - x would mean the air, or empty space in the bottle not being used by the water in the bottle.

Question:

"Create an equation that shows how much space is not taken up by water in a 24 once water bottle if it currently has x ounces of water."

OR

"A standing garden bed has x cubic feet in the box.  It can hold 24 cubic feet, counting from the bottom to very top.  How much empty space is there from the top of the dirt in the box to the very top of the box?"

Answer:  D.  7/15 or

Step-by-step explanation:

You have 15 possible outcomes

Probability= possibilities/outcomes

Possible numbers that are multiples of 3 are: 3, 6, 9, 12, 15.  There are 5 possibilities.

P(multiple of 3) = 5/15

Possible numbers that are multiples of 7 are: 7, 14, .  There are  2 possibilities.

P(7) = 2/15

Because of the or you add th e probabilities

P(multiple of 3 or multiple of 7) = 5/15 +2/15 =7/15

D

Talia's auto loan and Noah's credit card payments will differ in terms of interest and payment structure.

Talia will have a set monthly payment without interest, whereas Noah will have a minimum monthly payment with interest.

Talia's payments are fixed and cannot be skipped, while Noah's minimum payment may vary depending on the balance.

In summary, Talia has a predetermined repayment plan, while Noah's payments depend on credit card usage and may fluctuate.

Read more about monthly payments here:

https://brainly.com/question/27926261

#SPJ1

Talia will have a set amount due, while Noah will have a minimum monthly payment that could change. The Option D is correct.

Assuming Talia and Noah have the same interest rate and payment terms:

Therefore, Noah has the option to pay more than the minimum amount due but is not required to do so.

Read more about payment

brainly.com/question/26049409

#SPJ4

The degree of the polynomial is 5.

The degree of a polynomial is the maximum exponent of the polynomial.

In cases where we have more than one variable in the same term, we need to add the exponents of the variables.

Here we have:

[tex]-8^3 xy^4[/tex]

The exponents are:

x ----> 1

[tex]y^4 ---- > 4[/tex]

Adding that: 4 + 1 = 5

the degree is 5.

Learn more about polynomials at:

https://brainly.com/question/4142886

#SPJ1

Original percentage: 100%

Percentage off: 25%

Percentage left over: 75%

Complete the number sentence to show how to find the sale price of the bunch of flowers:

Sale price = (100% - 25%) x $32 = 75% x $32 = $24

The typical population of a New Jersey county can be described as being around 445,349 people which is also the median population of a New Jersey country.

Based on the given information, the median population of a New Jersey county is 445,349 people. This means that half of the counties in the state have a population above this number, while the other half have a population below it.

However, it is important to note that the range of county populations in New Jersey is quite large, with some counties having as little as 60,000 people and others having almost 1,000,000 people. This indicates that there is significant variability in the population size of counties across the state.

The interquartile range (IQR) of county populations is also provided, which tells us that the middle 50% of county populations fall within a range of 467,983 people. This suggests that while there is variability in county populations, there is also some level of consistency in the distribution of populations across the state.

Overall, the typical population of a New Jersey county can be described as being around 445,349 people, with some counties having significantly larger or smaller populations.

To know more about median refer here:

https://brainly.com/question/30891252#

#SPJ11

The value of x in the equation is -32.8.

To solve for X in the equation X - (-1.8) = -31, we need to follow some basic algebraic steps.

The first step is to simplify the equation by adding the two negatives, which would result in X + 1.8 = -31. The next step would be to isolate X by subtracting 1.8 from both sides of the equation.

This will give us X = -32.8.
The value of X in this equation is -32.8.
It's essential to keep in mind the basic rules of algebra when solving such equations.

By following the rules and taking it step by step, we can solve any equation, regardless of how complex it may seem.
In conclusion,

X - (-1.8) = -31 is a straight forward equation that can be solved using basic algebraic steps.

The value of X is -32.8.
The given equation is X - (-1.8) = -31.
When you see a subtraction of a negative number, you can rewrite it as addition of the positive number. So, X - (-1.8) becomes X + 1.8. The equation now is:
X + 1.8 = -31
To find the value of X, subtract 1.8 from both sides of the equation:
X + 1.8 - 1.8 = -31 - 1.8

We can simplify by adding the values of the two negative numbers on the left side of the equation:

X + 1.8 = -31

Next, we can isolate the variable x by subtracting 1.8 from both sides of the equation:

X = -31 - 1.8

Simplifying further, we get:

X = -32.8
This simplifies to: X = -32.8
So, the value of X is -32.8 in the equation X - (-1.8) = -31.

For similar question on value  :

https://brainly.com/question/30781415

#SPJ11

For water [OH⁻] equals 8.70 x 10⁻²³ M when [H⁺] = 1.15 x 10⁸ M .

Assuming that the ion product constant for water is being questioned, Kw:

Kw = [H⁺] [OH⁻]

where Kw = ion product constant for water

kW at 25°C = 1.0 x 10⁻¹⁴

Since Kw is constant at a given temperature, if we know the concentration of [H⁺] or [OH⁻], we can find it with Kw the concentration of the new ion

given that [H⁺] = 1.15 x 10⁸ M, [OH⁻] can be determined as follows.

Kw = [H⁺] [ OH⁻]

plugging in the values

1.0 x 10⁻¹⁴ M² = (1.15 x 10⁸ M) * ([OH⁻])

[OH⁻] = (1.0 x 10⁻¹⁴ M² ) / (1.15 x 10⁸ M )

[OH⁻] = 8.70 x 10⁻²³ M

Learn more about OH at

https://brainly.com/question/29713522

#SPJ4

If a baseball pitcher records 153 strikeouts in his first year pitching with the number of strikeouts decreasing by 31% yearly, and if the trend continues, the upper limit on the total of strikeouts over the pitcher's lifetime is 153.

The upper limit refers to the maximum value possible.

The initial number of recorded strikeouts = 153

The annual decay rate = 31%

Decay factor = 0.69 (1 - 0.31)

Let the number of strikeouts in the year = y

Let the number of years of pitching = x

y = 153(0.69)^x

For instance, if x = 3, y = 153(0.69)^3

y = 50

Learn more about the upper limit at https://brainly.com/question/25739974.

#SPJ1

a. A customer would save $492 during the first year by switching from ElectroniSource to Intellivision. b. A customer who would save $207 in the second year. c. Intellivision's total cost of $1654.56.

Algebra is a branch of mathematics that deals with the manipulation and properties of variables, symbols, and equations. In algebra, variables represent unknown quantities, and equations represent relationships between those unknown quantities.

The fundamental operations in algebra are addition, subtraction, multiplication, and division. Algebraic equations involve variables and constants, which are combined using these operations to form algebraic expressions. These expressions can be simplified by applying algebraic rules and properties, such as the distributive property, associative property, and commutative property.

a. To calculate the savings during the first year, we need to find the total cost for each company for all three services during a year and compare them.

For ElectroniSource, the total cost for a year would be:

$42/month x 12 months = $504 for phone service

$35/month x 12 months = $420 for Internet service

$59/month x 12 months = $708 for cable TV service

Total cost for a year with ElectroniSource = $504 + $420 + $708 = $1632

For Intellivision, the flat monthly fee is $95, so the total cost for a year would be:

$95/month x 12 months = $1140

Savings during the first year = Cost with ElectroniSource - Cost with Intellivision

= $1632 - $1140

= $492

Therefore, a customer would save $492 during the first year by switching from ElectroniSource to Intellivision.

b. After the first year, Intellivision raises the rates by 25%. The new monthly fee would be:

$95 + 25% of $95 = $118.75

To calculate the savings for the second year, we need to find the total cost for each company for all three services during the second year and compare them.

For ElectroniSource, the total cost for the second year would still be:

$504 for phone service

$420 for Internet service

$708 for cable TV service

Total cost for the second year with ElectroniSource = $504 + $420 + $708 = $1632

For Intellivision, the total cost for the second year would be:

$118.75/month x 12 months = $1425

Savings during the second year = Cost with ElectroniSource - Cost with Intellivision

= $1632 - $1425

= $207

Therefore, a customer who switched from ElectroniSource to Intellivision would save $207 in the second year.

c. If Intellivision raises the rates by 16% for the third year compared to the second year, the new monthly fee would be:

$118.75 + 16% of $118.75 = $137.88

To compare the total cost for each company for the third year, we need to find the total cost for each company for all three services during the third year and compare them.

For ElectroniSource, the total cost for the third year would still be:

$504 for phone service

$420 for Internet service

$708 for cable TV service

Total cost for the third year with ElectroniSource = $504 + $420 + $708 = $1632

For Intellivision, the total cost for the third year would be:

$137.88/month x 12 months = $1654.56

Therefore, ElectroniSource is cheaper for the third year, with a total cost of $1632 compared to Intellivision's total cost of $1654.56.

To know more about cost visit:

https://brainly.com/question/506602

#SPJ1

The statement mentions that the kitchen sink has a capacity of 108.460 L of water and it is important to round up the amount to the nearest liter. When we round up the capacity of the sink, it comes out to be 108 liters. This means that the sink can hold up to 108 liters of water at maximum capacity.

It is important to have an idea of the sink’s capacity in terms of liters because it helps in managing the amount of water used while washing dishes or other household items. It is also beneficial to know the capacity of the sink while filling it with water for cleaning purposes, as it prevents the sink from overflowing.

Overall, the capacity of a sink is an important factor to consider while designing a kitchen or bathroom as it ensures proper functionality and prevents any damage to the surrounding areas due to overflowing water. So, it is always advisable to check the capacity of a sink before installing it in a household.

To know more about capacity click here

brainly.com/question/29033783

#SPJ11

Complete Question  :  Mirrors kitchen sink holds up to 108.460 L of water. Round this amount to the nearest liter.

The measure of angle m<BEC is 80 degrees

From the information shown, we have that;

m< AD = 120 degrees

m< BC = 80 degrees

To determine the value of m<BEC, we need to know that it is a minor arc in the circle.

Also, a minor arc is described as the shorter arc that connects two endpoints on a circle.

The measure of a minor arc is less than 180° , and  is equal to the measure of the arc's central angle.

We can see than the angle measure of m<BC = m<BEC

Then,

m<BEC = 80 degrees

Learn about minor arc at: https://brainly.com/question/12526346

#SPJ1are

The minimal value of the given parabola is y = 5/2, which occurs at x = 0.

To discover the minimum value of the given parabola & that's why we need to determine the vertex of the parabola.

The vertex of a parabola in the form of y = ax^2 + bx + c is given by means of (-b/2a, f(-b/2a)).

in the given parabola, a = 1, b = 0, and c = 5/2. consequently, the x-coordinate of the vertex is -b/2a = 0/(2*1) = 0.

To discover the y-coordinate of the vertex & we substitute x = 0 within the given equation:

y = 0^2 + 5/2 = 5/2

Therefore, the minimal value of the given parabola is y = 5/2.

Learn more about parabola:-

https://brainly.com/question/29635857

#SPJ1