The circle below is centred at O.
a) Work out the size of angle x.
b) Which of the circle theorems below allows
you to calculate this angle?
x
27°
Not drawn accurately
The angle at the circumference in a semicircle is a right angle
Opposite angles in a cyclic quadrilateral add up to 180°
The angle between the tangent and the radius at a point
on a circle is 90°
The perpendicular line from the centre of a circle to a chord
bisects the chord
Two tangents that meet at a point are the same length

The constant percent rate of change of f(x) with respect to x is (d) 25% decay

The function is given as

f(x) = 46(0.75)^x

The above function is an exponential function

The growth/decay factor is

b = 0.75

The constant rate is then calculated as

Rate = 1 - b

This is because b is less than 1 (i.e. an exponential decay)

So, we have

Rate = 1 - 0.75

Evaluate

Rate = 25%

Hence, the constant percent rate of change of f(x) with respect to x is (d) 25% decay

Read more about exponential functions at:

https://brainly.com/question/27161222

#SPJ1

Answer: D

Hope this helps :)

Answer:

A. s+7726>=12,600

Step-by-step explanation:

s is the number of steps left to reach her goal of at least 12,600 steps.

7726 is the number of steps already taken.

12,600 is her goal.

s+7726>=12,600

Hope this helps!

Please mark as brainliest if correct!

3) a) The domain of the rational function is x ≥ 1.

b) The domain of the rational function is all the real numbers except x = 3 and x = - 4.

4) a) The root of the rational function is 6.

b) The roots of the rational function are 4 and 1.

Rational functions are algebraic expressions of the form P(x) / Q(x), where P(x) is the numerator and Q(x) is the denominator. 3) The domain of rational functions are the x-values that comprises P(x) except all values such that Q(x) = 0. Then, we proceed to find the domain of each function:

Case 1

The domain of P(x) = √(x - 1) is x ≥ 1 and the indetermination values of Q(x) = 2 · x is x = 0. Then, the domain of the rational function is x ≥ 1.

Case 2

The domain of P(x) = 3 is all the real numbers and the indetermination values of Q(x) = (x - 3) · (x + 4) are x = 3 and x = - 4. Then, the domain of the rational function is all the real numbers except x = 3 and x = - 4.

4) The roots of a function are all the values at which the function is evaluated such that is equal to zero.

Case 1

1 - 2 / (x - 4) = 0

[(x - 4) - 2] / (x - 4) = 0

x - 6 = 0

x = 6

The root of the rational function is 6.

Case 2

(x² - 5 · x + 4) / 5 = 0

x² - 5 · x + 4 = 0

(x - 4) · (x + 1) = 0

The roots of the rational function are 4 and 1.

To learn more on rational functions: https://brainly.com/question/8177326

#SPJ1

Answer:

hi

Step-by-step explanation:

Answer:

FITNESS Laura wants to go to a fitness class

tomorrow. She can choose a 5:00 or a 7:30 class and

spin or water aerobics. Represent the sample space

for the situation by making an organized list, a table,

and a tree diagram.

Step-by-step explanation:

If AC = 4x - 3, DC = 2x + 9, m ∠ ECA = 15x + 2, and EC is a median of ΔAED then EC is not an altitude of ΔAED because of m ∠ ECA = 92.

In geometry, an altitude is a line that passes through two very specific points on a triangle: a triangle's vertex, or corner, and its opposite side at a right, or 90-degree, angle. The base is the opposite side. Triangles have three vertices and three opposite sides in common.

Given: AC = DC

4x - 3 = 2x + 9

4x - 2x - 3 = 2x - 2x + 9

simplifying the above equation, we get

2x - 3 = 9

2x - 3 + 3 = 9+3

2 x = 12

x = 6

Substitute the value of x in m ∠ ECA, then we get

m ∠ ECA = 15x + 2

= 15(6) + 2

m ∠ ECA = 92

EC is not an altitude of ΔAED because of m ∠ ECA = 92.

Therefore, EC is not an altitude of ΔAED.

To learn more about altitude of a triangle refer to:

brainly.com/question/14357999

#SPJ4

The equation of the line 4x + 6y = 12 expressed in slope-intercept form is y = -2/3 x + 2 with a slope equal to -2/3.

The equation of a line can be expressed in three different forms: standard form, slope-intercept form, and point-slope form.

The slope-intercept form of the equation of a line is given by the formula:

y = mx + b

where m is the slope of the line

b is the y- intercept

Given the equation of the line 4x + 6y = 12, which is in standard form, transform it into slope-intercept form by isolating the variable y in one side.

4x + 6y = 12

6y = -4x + 12

Dividing both sides by 6,

y = -4/6 x + 2

y = -2/3 x + 2

Hence, the equation of the line in slope-intercept form is y = -2/3 x + 2 where the slope, m, is equal to -2/3.

To learn more about equation of the line in slope-intercept form: brainly.com/question/1884491

#SPJ4

Answer:

a

Step-by-step explanation: codigo binario

Step-by-step explanation:

222-6=216

216÷4=54

so 54 students per bus

Answer:

54 students

Step-by-step explanation:

222 - 6 (students that had to travel in cars) = 216

216 / 4 (4 buses) = x

x = number of students on each bus

216 / 4 = 54

x = 54

54 students on each bus

216 students rode the bus, 6 students rode in cars

The set of items that exist as part of both sets A and B exists at the intersection of the two sets.

If p(a|b) =0.40, p(b) = 0.74, and p(a) = 0.42, then P(A∩B) is 0.46.

The area of mathematics known as probability deals with numerical representations of the likelihood that an event will occur or that a statement is true.

It exists given that the Probability of two independent event A and B exists given by P(A)  and P(B).

The intersection of event A and B is given by P( A∩B).

The group of items that are part of both sets A and B is the intersection of the two sets. A ∩ B represent the intersection. The symbol "∩" can be used to represent the intersection of sets.

The collection of all outcomes that are components of both sets A and B is known as the intersection of events A and B (abbreviated AB).

Given: P(a|b) = 0.40

P(A) = 1 - 0.40 = 0.6

P(B) = 1 - 0.74 = 0.26

P(A∪B) = P(A) + P(B) − P(A∩B)

substitute the values in the above equation, we get

0.40 = 0.6 + 0.26 - P(A∩B)

- P(A∩B) = 0.40 -  0.6 - 0.26

P(A∩B) = 0.46

Therefore, the independent events of A and B exists 0.46.

To learn more about intersection, refer to:

https://brainly.com/question/23934871

#SPJ4

The number of minutes it will take the marshal to catch up to the robber in discuss is; 210.

Let 30minutes = 0.5 hours.

Let x represent the time for which the marshal has ran.

On this note, the robber must have galloped at; (x +0.5) hours.

Hence, it follows from the task content that if they are at the same distance from the bank; we have;

14(x+0.5) = 16(x)

14x + 7 = 16x

7 = 2x

x = 7/2 = 3.5 hours.

= 3.5 × 60minutes = 210minutes.

Read more on word problems;

https://brainly.com/question/21405634

#SPJ1

The solution of the given formula s = (1/2)gt² for the indicated variable g is g = 2s/t².

According to the given question.

We have a formula.

s = (1/2)gt²

Since, we have to solve this given formula s = (1/2)gt² for the variable g.

Which means we have to write separate variable g to one side from the other variables which are in the given formual s = (1/2)gt² .

Thereofre, the solution of the given formula for the variable g is given by

s = (1/2)gt²

⇒ 2s = gt²               (multipling both the sides by 2)

⇒2s/t² = g               (dividing both the sides by t²)

⇒ g = 2s/t²

Hence, the solution of the given formula s = (1/2)gt² for the indicated variable g is g = 2s/t².

Find out more information about formula here:

https://brainly.com/question/10596324

#SPJ4

Step-by-step explanation:

[tex] = \lim \limits_{x \to0}x \cot(2x) [/tex]

[tex] = \lim \limits_{x \to0} \frac{x}{ \tan(2x) } [/tex]

[tex] = \lim \limits_{x \to0} \frac{x}{ \tan(2x) } \times \frac{2x}{2x} [/tex]

[tex] = \lim \limits_{x \to0} \frac{2x}{ \tan(2x) } \times \lim \limits_{x \to0} \frac{x}{2x} [/tex]

[tex] = \lim \limits_{u \to0} \frac{u}{ \tan(u) } \times \frac{1}{2} [/tex]

[tex] = \frac{1}{2} [/tex]

The company catches 1,237,275.5 fishes over 10 years.

Given that, a company catches 175000 fishes in a year, the population decreases, the number of fish the company was able to catch decreased by 8% each year.

So, the population in 10 year =

The second year = 175000 × 0.92 = 161000

The third year = 161000 × 0.92 = 148120

The fourth year = 148120 × 0.92 = 136,270.4

The fifth year = 136270.4 × 0.92 = 125368.8

The sixth year = 125268.8 × 0.92 = 115339.3

The seventh year = 115339.3 × 0.92 = 106112.2

The eighth year = 106112.2 × 0.92 = 97623.2

The ninth year = 97623.2 × 0.92 = 89813.3

The tenth year = 89813.3 × 0.92 = 82628.3

The total = 175,000+161000+148120+136,270.4+125368.8+115339.3+106112.2+97623.2+89813.3+82628.3 = 1,237,275.5

Hence, the company catches 1,237,275.5 fishes over 10 years.

Learn more about exponential decay, click;

https://brainly.com/question/2193799

#SPJ1

Answer:

21.9 is a possible value

Step-by-step explanation:

I just wrote the equation below have a very small but positive value on the right side and solved for x

x - 21.8 = 0.1

x = 21.9

Answer:

C.)-200

Step-by-step explanation:

Each week if you take away $40 for 5 weeks, you would take away $220. -40*5=200.

The shuttle is 34.03 miles high.

In this question,

Anna is watching a space shuttle launch 6 miles from Cape Canaveral in Florida.

The angle of elevation from her viewing point to the shuttle is 80°

If the space shuttle is going straight up, we need to how high the shuttle is.

Let x be the unknown value.

Consider tangent of angle 80°

So, tan(80°) = x/6

⇒ x = 6 × tan(80°)

⇒ x = 6 × 5.6713

⇒ x = 34.03 miles

Therefore, the shuttle is 34.03 miles high.

Learn more about the angle of elevation here:

https://brainly.com/question/21137209

#SPJ4

Answer:

The graph of g(x) shows exponential decay, while the graph of f(x) shows exponential growth. What you need in your answer: The graphs are reflections of each other over the y-axis. The g(x) function represents exponential decay.

The situation can be solved by determining the probability of the selecting a certain color marble.

Probability is the ratio of a favorable outcome x to the total number of outcomes n of an event. In the give case, if the prediction is correct, you get a dollar.

Probability=x/n

On the first draw, the chance that predicted color is drawn is:

Probability=2/4=1/2

Amount you may get is ½*1=1/2

On the second draw, the chance the color with two left balls is predicted and come out:

Probability=2/3

Amount you may get is 2/3*1=2/3

On the third draw, you predicted a color with no same color balls left:

Probability=1/3

Amount you may get is 1/3*1=1/3

Or you predicted a color with two different color balls left

Probability=2/3*1/2=2/6=1/3

Amount you may get is 1/3*1=1/3

On the fourth draw, the probability of correct predicted ball is 1

Amount you may get is 1=1

If you played the game optimally, summing up the amount=1/2+2/3+1/3+1/3+1=17/6≈2.88

Hence, by playing the game optimally, the expected value of the game is $2.88.

Learn more about Probability:

https://brainly.com/question/25688842

#SPJ4

Answer:

195.86

Step-by-step explanation:

Answer: 195.86. Yw.

Step-by-step explanation: Pls add me Brainliest >3

On solving for x, we get x = -1

A number base is the number of digits or combination of digits that a system of counting uses to represent numbers. Decimal system is the most commonly used number system with base 10.

Given is the following expression -

3 base x + 34 base x - 40 base x = 0

The given expression can be solved by converting the above expression in decimal form. Therefore -

3 base x in decimal = (3 x⁰) base 10 = 3

34 base x in decimal = (3 x¹ + 4 x⁰) base 10 = 3x + 4

40 base x = (4 x¹ + 0 x⁰) base 10 = 4x

Substituting the decimal values in the expression given -

3 + (3x + 4) + 4x = 0

7x + 7 = 0

7x = -7

x = - 1

Therefore, on solving for x, we get x = -1

To solve more questions on Base Number System, visit the link below-

https://brainly.com/question/21757274

#SPJ1

Answer:

Option 2

Step-by-step explanation:

2.2 x 1.25 = 2.7510-2.75=7.25

If two trains leave towns 978 miles apart at the same time and travel toward each other and one train travels 21 miles per hour faster than the other and if they meet in 6 hours, then the rate of the faster and slower train will be 92mph and 71 mph respectively.

To determine the rate or speed of each train, an algebraic expression can be used.

As one train travels 21 miles per hour faster than the other, consider x to be the speed of the train that travels slower. In this case, an algebraic expression can be given as,

6x + 6(x + 21) = 978

Here, (x + 21) represents the speed of the faster train

6x + 6x + 126 = 978

12x = 978 - 126

12x = 852

x = 852 ÷ 12

x = 71

x + 21 = 71 + 21 = 92

Hence, the rate of the faster train is 92 miles per hour and the rate of the slower train is 71 miles per hour.

To learn more about algebraic expressions, click here:

https://brainly.com/question/4344214

#SPJ4

Answer:Substitute the value of the variable into the equation and simplify.

84

Step-by-step explanation:

Answer:

(a): 26.1

(b): 27.9

Please see below for the steps.

Step-by-step explanation:

(a):

Use points (0,0) and (3, 78.3)

Use slope formula. The slope formula is also used to find average rate of change (just so you know).

y2-y1/x2-x1

78.3-0/3-0=78.3/3=26.1

Answer for (a) is 26.1

(b):

Use points (4, 147.6) and (9, 287.1)

Use slope formula.

y2-y1/x2-x1

287.1-147.6/9-4=139.5/5=27.9

The answer for (b) is 27.9

Hope this helps!

Please mark as brainliest if correct!

Have a great day!

Answer:

2 times as much

Step-by-step explanation:

1 hour 2/3 = 60 + (2/3) 40 mins = 100 minutes

3 hours 1/3 = (60 ×3 ) + 20 mins = 200 mins

200 is twice as much as 100

Answer: DB=6.5 units

Step-by-step explanation:

DB=BD

AB+BD=AD

AB=BD ==> Bisectors divide a segment into two equal parts

BD+BD=13

2*BD=13

BD=13/2

BD=

DB=6.5 units

The probability of the event P(A is on [tex]\bar{CE}[/tex]) is 21/26.

Probability:

Probability defines the possibility of the event across the total event.

Given,

Point A is chosen at random on [tex]\bar{BE}[/tex].

Here we need to find the the probability of the following event.

P(A is on [tex]\bar{CE}[/tex]).

Let us consider the following image, in order to solve this.

Based on the image we have identified that the probability of the event  P(A is on [tex]\bar{CE}[/tex]) is calculated by dividing the length of CE by the length of BE.

So, the probability of the event P(A is on [tex]\bar{CE}[/tex]) is,

P(A is on [tex]\bar{CE}[/tex]) =  (length of CE) / (length of BE)

Then, length of CE is calculated by adding the distance,

=> CD + DE

=> 12 + 9

=> 21

Now,

Apply the values then we get,

P(A is on [tex]\bar{CE}[/tex]) = 21 / ( 5 + 12 + 9)

P(A is on [tex]\bar{CE}[/tex]) = 21 / 26

Therefore, the probability of the event P(A is on [tex]\bar{CE}[/tex]) is 21/26.

To know more about Probability here.

https://brainly.com/question/11034287

#SPJ4

He will break even on the 25th month.

The cost to start the business is $20,000 and the monthly costs are $8,000.

He has been earning $8,800 every month in revenue.

Profit = Selling Price - Cost Price

Therefore,

let

x = number of month

Hence,

selling price = 8800x

cost price = 20000 + 8000(x) = 20,000 + 8000x

Therefore,

profit =  8800x - (20,000 + 8000x)

profit = 8800x - 20000 - 8000x

profit = 8800x - 8000x - 20000

profit = 800x - 20000

Hence,

The month when they will break even is as follows:

8800x = 20,000 + 8000x

20000 = 8800x - 8000x

20000 = 800x

x = 20000 / 800

x = 25

Therefore, he will break even on the 25th month.

learn more on profit here: https://brainly.com/question/16046446

#SPJ1

The 32th term of the arithmetic sequence AP is estimated to be 0.3.

In math, an arithmetic progression (AP) is a list or sequence of numbers in which each term is obtained by adding a finite number to the term before it.

Now for the answer to the question;

The numbers in the given sequence are-

-9,-8.7,-8.4, ...........

There are 32 terms with in series for that we need to find the 32nd number.

Let's say the first term is 'a₁' = -9.

Let 'a₂' = -8.7 be the second term.

Let 'a₃' = -8.4 be the third term.

The common difference between two consecutive terms that are equal of an AP is 'd.'

d = a₂ - a₁  

Substitute the values in the preceding equation; the 32nd term is

d = -8.7 - (-9)

d = -8.7 + 9

d = 0.3

Now calculated using the nth term formula.

Substitute all of the values in the formula now.

a₃₂ = a + (n - 1) d

a₃₂ = -9 + (32 - 1)(0.3)

a₃₂ = -9 + 9.6 - 0.3

a₃₂ = 0.3

As a result, the arithmetic sequence's 32nd term is estimated to be 0.3.

More information on the arithmetic sequence can be found here.

brainly.com/question/6561461

#SPJ4