Need help with 9,10,13,14 also explain

The probability would be length of the interval [50.75, 51.25] divided by the length of the interval [47.0, 57.0] which is 0.05

Probability :Probability is the branch of mathematics concerning numerical descriptions of how likely an event is to occur, or how likely it is that a proposition is true. The probability of an event is a number between 0 and 1, where, roughly speaking, 0 indicates impossibility of the event and 1 indicates certainty. The probability formula is defined as the possibility of an event to happen is equal to the ratio of the number of favorable outcomes and the total number of outcomes.

Probability of event to happen P(E) = Number of favorable outcomes/Total Number of outcomes.

Now we have given :-the lengths of her classes are uniformly distributed between 47 and 57 minutes.

so probability hat a given class period runs between 50.5 and 51 minutes=

(51-50.5)/(57-47)

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The probability would be length of the interval [50.75, 51.25] divided by the length of the interval [47.0, 57.0] which is 0.05

Probability :Probability is the branch of mathematics concerning numerical descriptions of how likely an event is to occur, or how likely it is that a proposition is true. The probability of an event is a number between 0 and 1, where, roughly speaking, 0 indicates impossibility of the event and 1 indicates certainty. The probability formula is defined as the possibility of an event to happen is equal to the ratio of the number of favorable outcomes and the total number of outcomes.

Probability of event to happen P(E) = Number of favorable outcomes/Total Number of outcomes.

Now we have given :-the lengths of her classes are uniformly distributed between 47 and 57 minutes.

so probability hat a given class period runs between 50.5 and 51 minutes= (51-50.5)/(57-47) = 0.05

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Larry ran at an average velocity of 66.7 m/min to the lamppost 200 m away and an average velocity of 250 m/min to the tree 1000 m away.

v1 = 200 m / 3 min = 66.7 m/min

v2 = 1000 m / 4 min = 250 m/min

Larry left his home at 9:06 and ran at a constant speed to the lamppost 200 m away. He arrived at the lamppost at 9:09. Immediately after arriving, he turned around and ran to a tree 1000 m away, arriving at 9:13. To find his average velocity during each interval, we can divide the distance traveled by the time it took to travel the distance. For the first interval, Larry traveled 200 m in 3 minutes, so his average velocity was 200 m divided by 3 min, or 66.7 m/min. For the second interval, Larry traveled 1000 m in 4 minutes, so his average velocity was 1000 m divided by 4 min, or 250 m/min.

Larry ran at an average velocity of 66.7 m/min to the lamppost 200 m away and an average velocity of 250 m/min to the tree 1000 m away.

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On solving the function H(x) = 0.05x + 10.25, the plant's height after a period of 30 months is obtained as 11.75 m.

What is a function?

In mathematics, a function is a unique arrangement of the inputs (also referred to as the domain) and their outputs (sometimes referred to as the codomain), where each input has exactly one output and the output can be linked to its input.

The height of the plant is = 10.25 m

The rate at which plant grows is = 5 cm/month or 0.05m/month

The function for plant's height is given as - H(x) = 0.05x + 10.25

To find the plant's height after 30 months, substitute the value of x with 30 in the function -

H(30) = 0.05(30) + 10.25

Use the arithmetic operation of multiplication -

H(30) = 1.5 + 10.25

Use the arithmetic operation of addition -

H(30) = 11.75

Therefore, the plant's height after 30 months will be 11.75 m.

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Answer:

9c + 0.8d + 1

Step-by-step explanation:

- (- 9c - 0.8d - 1) ← multiply each term in the parenthesis by - 1

= 9c + 0.8d + 1

The table 1  represent the function From the given figure.

What is function ?

The function in mathematical terms is the mapping of each member of a set (named as a domain) to another set of members (named as a codomain). This term has a different meaning from the same word that is used every day, such as "the tool works well." The concept of function is one of the basic concepts of mathematics and any quantitative science. The terms "function", "mapping", "map", "transformation" and "operator" are usually used synonymously.

In function, there are several important terms, including:

The domain is the area of ​​origin of the function f denoted by Df.

Codomain is the area where the f function area is denoted by Kf.

The range is the result area which is a subset of the codomain. The function range f is denoted by Rf.

PROPERTIES OF FUNCTIONS

1. INJECTIVE FUNCTION

Called one-on-one function. Suppose the function f represents A to B, then the function f is called a one-on-one function (injective), if each two different elements in A will be mapped to two different elements in B. Furthermore, it can be said briefly that f: A → B is injective function if a ≠ b results in f (a) ≠ f (b) or equivalent if f (a) = f (b) then the effect is a = b.

2. SURJECTIVE FUNCTION

Function f: A → B is called a function to or objective function if and only if for any b in the B domain can be at least one an in domain A so f (a) = b applies. In other words, a codomain of the objective function is the same as its range.

3. BIJECTIVE FUNCTION

A mapping off: A → B is such that f is both an injective and objective function at once, so it is said "f is a function of wisdom" or "A and B are in one-to-one correspondence".

Therefore, The table 1  represent the function From the given figure.

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The linear function containing the altitude to the hypotenuse of a right triangle whose vertices are P(-1, 1), Q(3, 5), and R(5, -5) is given as follows:

y = -5x + 20.

The slope-intercept definition of a linear function is given as follows:

y = mx + b.

In which:

The hypotenuse is composed by segment QR, hence the points are:

Q(3,5) and R(5,-5).

The slope is given by the change in y divided by the change in x, hence:

m = (-5 - 5)/(5 - 3)

m = -5.

Hence:

y = -5x + b.

When x = 3, y = 5, hence the intercept b is obtained as follows:

5 = -15 + b

b = 20.

Hence the equation is:

y = -5x + 20.

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There a rule for logarithms:

         [tex]\log_n(a^m) = m \cdot \log_n(a)[/tex]

So when you're working with [tex]\log_5(a^3)[/tex], we can use that rule to rewrite this as
        [tex]\log_5(a^3) = 3 \cdot \log_5(a)[/tex]

And since the first part tells us (on paper) that [tex]\log_5(a) = 2[/tex], then we can say
        [tex]\log_5(a^3) = 3 \cdot \log_5(a) = 3 \cdot 2 = 6[/tex]

The probability of rolling a number greater than 1 on a six sided number cube is 5/6 therefore the likelihood that best describes the of this event is that it is Likely and is therefore denoted as option D.

This is referred to as the branch of mathematics which describes how likely an event is to occur or how likely it is that a proposition is true using numerical descriptions.

In this scenario we were told that the probability of rolling a number greater than 1 on a six sided number cube is 5/6 which means that is likely to occur due to the high percentage or ratio of the event being observed thereby making option D the correct choice.

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The concept of linear pairs from the given diagram shows that; GKH =  90°

A linear pair is formed when two straight lines intersect to form two angles that are adjacent to each other and are on a straight line.

Now, what this means is that ∠F KG and ∠GKH will sum up to 180 degrees because they are linear pairs from the question.

Due to the fact that ∠F KG = 90°, then we can say that;

∠F KG + ∠GKH = 180°

90° + ∠GKH = 180°

∠GKH = 180° - 90°

∠GKH =  90°

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The solution of m+n+p = 462+40+3 = 505.

The set is divided into several parts: the large 3x4x5 parallelepiped, 6 external parallelepipeds that share a face with the large parallelepiped and have a height of 1, 1/8 spheres (one at each vertex of the large parallelepiped), and 1/4 cylinders connecting each adjacent pair of spheres.

The parallelepiped has a volume of $3 times 4 times 5 = 60 cubic units.

The external parallelepipeds have a volume of $2(3 times 4 times 1)+2(3 times 5 times 1)+2(4 times 5 times 1)=94$.

Each of the 1/8 spheres has a radius of 1. Their combined volume is [tex]\frac{4}{3} \pi[/tex].

There are 12 of the 1/4 cylinders, allowing for the formation of 3 complete cylinders. Their volumes are 3[tex]\pi[/tex], 4[tex]\pi[/tex], and 5[tex]\pi[/tex], totaling 12[tex]\pi[/tex].

The total volume of these parts is 60+94+ [tex]\frac{4}{3} \pi[/tex] +12[tex]\pi[/tex] = [tex]\frac{462 + 40\pi }{3}[/tex]. Thus, the solution is m+n+p = 462+40+3 = 505.

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The number of white balls is equally likely to be any number between 1 and n − 1.

This problem can be solved by considering the number of ways to get a certain number of white balls in the bin. Since each ball can either be white or black, there are 2^n possible sequences of n balls in the bin.

Now consider the number of ways to get exactly k white balls in the bin. It can be done in the following way:

Choose k white balls out of n balls, which can be done in C(n, k) ways, and then arrange the k white balls and n-k black balls in (n-k + k)!/(n-k)!k! ways.

Therefore, the number of ways to get exactly k white balls in the bin is C(n, k)(n-k + k)!/(n-k)!k! = C(n, k)(n!)/(n-k)!k!.

Since each sequence of balls is equally likely, it follows that the number of white balls is equally likely to be any number between 1 and n - 1.

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

"Consider the following balls-and-bin game. We start with one black ball and one white ball in a bin. We repeatedly do the following: choose one ball from the bin uniformly at random, and then put the ball back in the bin with another ball of the same colour. We repeat until there are n balls in the bin. Show that the number of white balls is equally likely to be any number between 1 and n − 1."--

Answer:

46.05 years

Step-by-step explanation:

[tex]\boxed{\begin{minipage}{8.5 cm}\underline{Continuous Compounding Formula}\\\\$ A=Pe^{rt}$\\\\where:\\\\ \phantom{ww}$\bullet$ $A =$ final amount \\\phantom{ww}$\bullet$ $P =$ principal amount \\\phantom{ww}$\bullet$ $e =$ Euler's number (constant) \\\phantom{ww}$\bullet$ $r =$ annual interest rate (in decimal form) \\\phantom{ww}$\bullet$ $t =$ time (in years) \\\end{minipage}}[/tex]

Given:

Substitute the given values into the continuous compounding formula and solve for t.

[tex]\implies 1000=100e^{0.05t}[/tex]

[tex]\implies 10=e^{0.05t}[/tex]

[tex]\implies \ln 10=\ln e^{0.05t}[/tex]

[tex]\implies \ln 10=0.05t\ln e[/tex]

[tex]\implies \ln 10=0.05t[/tex]

[tex]\implies t=\dfrac{1}{0.05}\ln 10[/tex]

[tex]\implies t=20\ln 10[/tex]

[tex]\implies t=46.0517018... \rm years[/tex]

Therefore, it will take 46.05 years for the initial investment of $100 to reach $1000.

The simplified form of the first expression is -37 + 6i and the second expression is -16 - 14i.

What is the arithmetic operations?

Arithmetic operations are basic mathematical operations that can be performed on numbers, such as addition, subtraction, multiplication, and division.

The first expression is 7 - (3 + 41) + 6i. To simplify this expression, we need to first simplify the parentheses. Inside the parentheses, we have 3 + 41 = 44. So the expression becomes:

7 - 44 + 6i

Next, we can simplify the arithmetic operations by combining like terms:

7 - 44 + 6i = -37 + 6i

The second expression is -10 + (6 - 5i) - 9i. Similar to the first expression, we need to simplify the parentheses first. Inside the parentheses, we have 6 - 5i = 6 - 5i. So the expression becomes:

-10 + 6 - 5i - 9i

Next, we can simplify the arithmetic operations by combining like terms:

-10 + 6 - 5i - 9i = -16 - 14i

Hence, the simplified form of the first expression is -37 + 6i and the second expression is -16 - 14i.

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option A is correct-Ben is 11/P + 6 old now in terms of P .

Six years ago,

Anita was P times as old as Ben was.

Let Ben's age now be B.

let Anita's age now be A.

linear equation in two variables is as follows,

(A-6) = P(B-6)

we know A = 17,put the value of A,

17 - 6 = P(B - 6)

11 = P(B - 6)

11/P = B- 6

B = 11/P + 6

therefore,

Ben is 11/P + 6  old now in terms of P .

linear equation

A linear equation in two variables is of the form Ax + By + C = 0, in which A and B are the coefficients, C is a constant term, and x and y are the two variables, each with a degree of 1.

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Answer:

The gas mileages (in miles per gallon) for 35 cars are shown in the frequency distribution. This means that the gas mileage of 35 cars has been recorded and grouped into categories. The categories are 27-30, 31-34, 35-38, and 39-42. The frequency is the number of cars in each category. For example, there are 12 cars that have a gas mileage between 27 and 30 miles per gallon. Approximating the mean of the frequency distribution means finding the average gas mileage of all the 35 cars. To do this, you need to add the gas mileages of all the 35 cars and divide the sum by 35. The approximate mean of the frequency distribution is 33.4 miles per gallon. An analogy that can help you understand this concept is that of a classroom full of students. If you want to calculate the average height of the students, you would need to add up the heights of all the students and divide the sum by the total number of students. The same concept applies to the frequency distribution.

An explicit definition can give a value for the nth item in a sequence by simply using the value of n: an = -27 * (-1/3)n-1      

What is Geometric Progression ?

Geometric Progression can be defined as the sequence of numbers in which the common ratio between any consecutive numbers is same.

When you say, "each term in the sequence is obtained by multiplying -1/3 to the previous term," that is the recursive definition.

An explicit definition can give a value for the nth item in a sequence by simply using the value of n:

an = -27 * (-1/3)n-1        

(more generally written as:  an = a1 * (-1/3)^n-1 )  

if n = 1

we get,

an = -27 *1 = -27

if n=2

we get,

an = 9

and if n=3

we get,

an = -3

similarly if n=4

than an= 1

Therefore, An explicit definition can give a value for the nth item in a sequence by simply using the value of n: an = -27 * (-1/3)n-1      

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The value of BD is 12cm.

What is  Pythagoras' theorem?

The Pythagorean theorem, sometimes known as Pythagoras' theorem, is a basic relationship between a right triangle's three sides in Euclidean geometry. According to this statement, the areas of the squares on the other two sides add up to the size of the square whose side is the hypotenuse.

Here, we have

BE = ED  (as E is the center of BD - property of a kite).

By Pythagoras' theorem:

10² = 8² + BE²

BE² = 10² - 8² = 36

BE = 6

So BD = 2*6 = 12.

Hence, the value of BD is 12cm.

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Answer:

Step-by-step explanation:

[tex]20y^2+5y[/tex]

[tex]20yy+5y[/tex]

[tex]5\cdot \:4yy+5\cdot \:1\cdot \:y[/tex]

[tex]5y\left(4y+1\right)[/tex]

Step-by-step explanation:

5y(4y + 1)

= 20y × y + 5y × 1

= 20y² + 5y

NB: BODMAS

Answer:

The function's minimal value is m = A |B|. When either sin x or cos x is equal to 1, this minimum is reached. Create a graph for the first example, y = 1 + 2 sin x.

Step-by-step explanation:

Answer:

-------------------------------------

Let the integers be:

Twice the sum of the second and third exceeds 3 times the first by 32:

Solve it for x:

Give the expression in terms of a, k, and t is g(t+1/k) = a2^(k(t+1/k)) = a2^kt * 2^(1/k)

The population doubles when P(t) = 2 * P(0), so we can set up the equation:

2 * 55 = 20^(5t)

Solving for t:

t = log(2)/(5 * log(20)) = log(2)/log(400)

The population doubles after approximately 0.173 years or 63.1 days.

g(t+1/k) = a2^(k(t+1/k)) = a2^kt * 2^(1/k)

Interpretation: g(t+1/k) is the population at time t+1/k, where a and k are positive constants. The population at t+1/k is equal to the population at time t multiplied by 2^(1/k). This means that if k is a large number, the population will change very little over time, if k is a small number, the population will change more quickly.

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The domain of the area function is given by the following interval:

(0, 40).

The domain of a function is the set composed by all the input values that the function accepts.

On the graph, the domain of the function is given by the values of x.

Considering the graph, the domain is given by the following interval:

(0, 40).

It is an open interval because if x = 0, then the length is of zero, and if x = 40, then the width is of zero, meaning that these dimensions are not possible.

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The cost to ship the small boxes and large boxes are 4 and 10 dollars respectively.

The postal service offers flat-rate shipping for priority mail in special boxes. Today, Jaden shipped 4 small boxes and 2 large boxes, which cost him $36 to ship. Meanwhile, Pamela shipped 3 small boxes and 9 large boxes, and paid $102.

The system of equation of represent the situation is as follows:

let

x = cost for small boxes

y = cost for large boxes

Hence,

4x + 2y = 36

3x + 9y = 102

Let's find how much used to ship the two sizes of box.

Multiply equation(i) by 4.5

18x + 9y = 162

3x + 9y = 102

Subtract the equations

15x = 60

x = 60 / 15

x = 4

Therefore,

2y = 36 - 4x

2y = 36 - 4(4)

2y = 36 - 16

2y = 20

y = 20 / 2

y = 10

Therefore,

cost for small boxes = 4 dollars

cost for large boxes = 10 dollars

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The solution of the inequality -3x - 3 ≤ 6 is x ≥ -3 represented by (D).

An equation is an expression that shows the relationship between numbers and variables. Equations are either linear, quadratic, cubic and so on

Inequality is an expression that shows the non equal comparison between two or more numbers and variables.

Number line contains number placed at regular intervals on a straight line.

Given the inequality:

-3x - 3 ≤ 6

adding 3 to both sides:

-3x - 3 + 3 ≤ 6 + 3

-3x ≤ 9

Dividing by -3:

x ≥ -3

The solution is D. It a solid dark circle beginning from -3 to the right.

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Answer:

x

=

0

,

x

=

1

,

x

=

2

,

x

=

−

1

, and

x

=

−

2

Explanation:

Start off by factoring out an

x

as follows

x

(

x

4

−

5

x

2

+

4

)

=

0

We can factor

x

4

−

5

x

2

+

4

Doing so we have

x

(

x

2

−

4

)

(

x

2

−

1

)

=

0

So in order for this to be equal to zero

x

=

0

OR

x

2

−

4

=

0

OR

x

2

−

1

=

0

Well

x

=

0

x

2

=

4

x

=

±

√

4

=

±

2

x

2

=

1

x

=

±

√

1

=

±

1

g(f(4)) means to first find f(4) and then use that result as the input for g(x).

So,

f(4) = 4 - 7 = -3

then we use the result, -3 as the input for g(x)

g(-3) = (-3)^2 = 9

Therefore, g(f(4)) = 9

Answer:

11

Step-by-step explanation:

picture is too blurry, but here is the process to solve it

L = 3+2w

total length = 30 inches = 2L +2w

so 2w=30-2L

L= 3+2w = 3+30-2L

so 3L =33

L =11

Answer:

8.00

Step-by-step explanation:

First simplify the exponents 10^15 is 1000000000000000 or 1e+15 then 10^4 is 10000. Then multiply: 1e+15 x 3 = 3e+15 ------ 10000 x 7 = 70000. When you divide 3e+15 by 70000 you get 8.115 or 8 rounded to the decimal place.

Answer: $385.50

Step-by-step explanation: 25,700x1.5% = 385.50