Pls help I’m no good at maths

Answer:

C. 2.8 * 10^-5

Step-by-step explanation:

Ok so its been a while since I've done these but pretty sure c is the answer. (Double check to make sure I'm correct)

Answer:

The answer is C and good luck on whatever you're doing!

Answer:

a cycle is a sequence of non-repeated vertices and the degree of a graph is the number of neighbors the vertex has.

Answer:

p=3

Step-by-step explanation:

5 +5 =10 p÷3(4+6) =py

=p3

Answer:

The possible number of students in Mrs. Hayko's class is limited to 15 or 30, as higher multiples of 15 would exceed the desired class size.

Step-by-step explanation:

a)

Let 'x' be the total number of students in Mrs. Hayko's class.

One-third of the students walk to school: (1/3)x.

The remaining students who do not walk to school: (2/3)x.

Four-fifths of the non-walking students take the bus: (4/5) * (2/3)x.

Simplify to find the fraction of students taking the bus: (8/15)x.

b)

Consider different values for 'x' to find a whole number of students taking the bus.

Start with a small number, such as x = 15.

Calculate the number of students taking the bus using (8/15)x.

If the result is a whole number, it's a possible class size.

Repeat with different values of 'x' until a whole number is obtained.

The possible number of students in Mrs. Hayko's class could be 15, 30, or any other multiple of 15.

Answer:

no, it does not

Step-by-step explanation:

Hello

-x+4y=-5

so

\(4y = x-5\\<=> y=\dfrac{1}{4}x-\dfrac{5}{4}\)

we say that y varies directly with x if y=kx

in this example we have an additional constant, the graph is not a line through the origin so this is not a direct variation

hope this helps

The degree of the Maclaurin polynomial necessary for the error in the estimate of f(0.12) to be less than 0.0001 is 6.

To determine the degree of the Maclaurin polynomial necessary for the error in the estimate of f(0.12) to be less than 0.0001, we can use Taylor's inequality:

|f(x) - P_n(x)| ≤ M * |x - a|^(n+1) / (n+1)!

where P_n(x) is the nth degree Maclaurin polynomial of f(x), M is an upper bound for the (n+1)th derivative of f(x) on the interval [0, 0.12], and a = 0.

Since we do not have the function f(x), we can't find the value of M directly. However, we can use the Lagrange error bound formula to find an upper bound for the error in the approximation using the Maclaurin polynomial.

If we assume that the function f(x) has derivatives of all orders on the interval [0, 0.12], we can use the Lagrange error bound formula:

|R_n(x)| ≤ (M * |x - a|^(n+1)) / (n+1)!

where R_n(x) is the remainder term, which is the difference between the actual value of f(x) and the value approximated by the nth degree Maclaurin polynomial, and M is an upper bound for the (n+1)th derivative of f(x) on [0, 0.12].

Assuming that f(x) is the exponential function, we have f^(n)(x) = e^x for all n, and hence M = e^0.12.

To find the degree of the Maclaurin polynomial necessary for the error in the estimate of f(0.12) to be less than 0.0001, we need to solve the following inequality for n:

(e^0.12 * 0.12^(n+1)) / ((n+1)!) ≤ 0.0001

We can solve this inequality numerically, using a calculator or a computer algebra system. Solving this inequality, we get n ≥ 6. Therefore, the degree of the Maclaurin polynomial necessary for the error in the estimate of f(0.12) to be less than 0.0001 is 6.

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Answer:

             \(\bold{h=\dfrac{3Q}{t-r}}\)

Step-by-step explanation:

\(\bold{r+\frac{3Q}h=t}\\-r\qquad\ -r\\\bold{\frac{3Q}h=t-r}\\\cdot h\qquad \cdot h\\ \bold{3Q=(t-r)h}\\^{\div(t-r)\quad\div(t-r)}\\\bold{\dfrac{3Q}{t-r}=h}\)

Or, if you mean (r+3Q)/h=t:

\(\bold{\frac{r+3Q}h=t}\\{}\ \ \cdot h\quad\ \cdot h\\\bold{r+3Q=ht}\\{}\ \ \div t\qquad \div t\\\bold{\dfrac{r+3Q}{t}=h}\\\\\bold{h=\dfrac{r+3Q}{t}}\)

Answer:

13a² + 5

Step-by-step explanation:  

Not 100% but 90% sure. Work on Picture.

Answer:

820

Step-by-step explanation:

82 ten times would just put a zero next to 82 then it would make it 820 And sorry for being 6 months late.

Answer:

thanks

Step-by-step explanation:

Answer:

Thank you very much

Step-by-step explanation:

:)

The equation used to find the distance of the flowerbed from the hive is called the "time equation".

The flowerbed is 900 feet far from the hive.

Find the traveling time

The bee spends 12 minutes hunting down the nectar in the flowerbed. Since it was away from the hive for a total of 16 minutes, the traveling time is

16min - 12min = 4 min

Convert the Minutes to seconds

1 minute = 60 seconds

4 minutes = 4*60 = 240 seconds

Find the time each way

The total time is 240 seconds, but it is not divided evenly.

Let the time there = t

Let the time back = 240 - t

The distances are the same

r = 10 m/s

r1 = 6 m/s

t1 = t

t2 = 240 - t

dthere = dback

d = rate * time

10 m/s *t = 6 m/s (240 - t)      

Remove the brackets on the right.

10 * t = 6*240 - 6t                

Combine the like terms on the right.

10t = 1440 - 6t                        

Add 4t to both sides

10t + 6t = 1440 - 6t + 6t          

Combine

16t = 1440                            

Divide both sides by 16

16t/16 = 1440/16                    

Do the division

t = 90                                    

Find the height

d = ?

r = 10 m/s

t = 90 second

d = r*t

d = 10 * 90 = 900 feet

The flowerbed is 900 feet far from the hive.

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The complete question is:

A babe flies at 10 feet per second directly to a flowerbed from its hive. the bee stays at the flowerbed for 12 minutes and then flies directly back to the hive at 6 feet per second. It is away from the hive for a total of 16 minutes.

What equation can you use to find the distance of the flowerbed from the hive?

First convert the distance she ran from a mixed number to a improper fraction:

• 4-1/2 equals 9/2.

Since this a unit rate problem divide the km by the time traveled.

• 9/2 (km) ÷ 3/4 (hour). When you divide a number by a fraction use (Keep-Change-Flip).

• 9/2 × 4/3 = 36/6 miles/hour.

That's means 36/6 = 18/3 = 6 km/ hour.

(a) Mrs Jeya gave 30 stickers to Group B on Tuesday. (b) Mrs Jeya bought a total of 126 stickers.

(a) Let's first calculate the number of stickers Mrs Jeya had remaining after giving 1/4 of the stickers to Group A. If she had 72 stickers remaining, it means that 3/4 of the original number of stickers is equal to 72. We can set up the equation:

(3/4) * x = 72

To solve for x, we multiply both sides of the equation by 4/3:

x = (72 * 4) / 3 = 96

So Mrs Jeya initially had 96 stickers.

Now, on Tuesday, she gave 5/12 of the remaining stickers to Group B. We know that the remaining number of stickers after giving to Group A was 72. Let's calculate the number of stickers she gave to Group B:

(5/12) * 72 = 30

Therefore, Mrs Jeya gave 30 stickers to Group B on Tuesday.

(b) To determine how many stickers Mrs Jeya bought, we need to add up the stickers she gave to Group A, the stickers she gave to Group B, and the remaining stickers.

Stickers given to Group A: 1/4 * 96 = 24

Stickers given to Group B: 30

Remaining stickers: 72

Total stickers = Stickers given to Group A + Stickers given to Group B + Remaining stickers

              = 24 + 30 + 72

              = 126

Therefore, Mrs Jeya bought a total of 126 stickers.

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Elementary and middle school groups typically run for 6 to 8 weeks, depending on administrator and teacher support for allowing students to miss class for the group sessions.

Elementary education,  can as well be described as the  primary education, which is the first stage of education that is followed in the traditional  formal education,  children at  about age 5 to 7 are those that are usually found in the elementary seetings of school.

Its should be noted that Elementary and middle school groups typically run for 6 to 8 weeks, depending on administrator .

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For the relationship, two variables are needed.

One of the variable is given as 'z'. Let the other one be 'x'.

Then you need to translate that 'x' is six more than four times a number 'z'.

This can be expressed as,

Thus, the right side of the expression represents the relationship "six more than four times a number z".

100 days should it sample so that the margin of error will be 39.1 tons or less

What is margin error?

The margin of error is a statistic that describes how much random sampling error there is in survey results. One should have less faith that a poll's findings would accurately reflect those of a population census the higher the margin of error.

The margin of error can be stated as

ME = SE⋅cv where cv = z.90 because this corresponds to a two tail test so we need the z value at 90%.

We can now use a look up table to find the corresponding z value to use which should be 1.96

Now

SE = σ/√n  leading to

39.1 = (197/√n)⋅(1.96).

Now we just need to solve for n

√n = (197/39.1)⋅(1.96) = 10

n = 10^2

n = 100

So, we probably need to sample for about 100 days if we want be within that margin of error.

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On September 1, 2018, Dubai Company should record the following entry:

Debit: Cash (or Note Payable) - $120,000

Credit: Note Payable (or Cash) - $120,000

When Dubai Company borrows $120,000 from ADCB Bank by signing a 4-month, 12% interest-bearing note, they need to record the transaction in their books. The entry will depend on whether they received the cash or the note itself. If they received the cash, the entry would be a debit to Cash and a credit to Note Payable, both for $120,000. If they received the note, the entry would be a debit to Note Payable and a credit to Cash, both for $120,000.

The entry represents the initial recognition of the note payable on Dubai Company's books. It acknowledges the liability they have incurred by borrowing funds from ADCB Bank. The note payable will be due in 4 months and carries an interest rate of 12%. It is important for Dubai Company to accurately record this transaction to maintain proper financial records and fulfill their obligations to ADCB Bank.

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Answer:

Correct answer is cylinder

Step-by-step explanation:

I just took this

It is not possible to find the triangular formula of a pentagon because a pentagon is a polygon with five sides and does not have a triangular formula.

We have,

A triangular formula is used to calculate the area of a triangle, which is a polygon with three sides.

The formula for the area of a triangle is given by:

Area = 1/2 x base x height

where the base and height are two of the sides of the triangle.

If you want to calculate the area of a pentagon, you can use the formula for the area of a regular pentagon, which is given by:

Area = (5/4) x s² x tan(π/5)

where s is the length of one of the sides of the Pentagon.

Thus,

It is not possible to find the triangular formula of a pentagon because a pentagon is a polygon with five sides and does not have a triangular formula.

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Answer:

Area = 15a^3b^6

Perimeter: 10a^2b^4+6ab^2

Step-by-step explanation:

Formula For Area: L*W

Input The Numbers: 5a^2b^4 * 3ab^2

5a^2b^4 * 3ab^2 = 15a^3b^6

Area = 15a^3b^6

Formula for perimeter: P=2(l+w)

Input the Numbers: P = 2(5a^2b^4 + 3ab^2)

2(5a^2b^4 + 3ab^2) = 10a^2b^4+6ab^2

Perimeter: 10a^2b^4+6ab^2

Hope this helped!

Both options a. A = 129.9° and b. A = 53.1° are correct.

To find the possible values for angle A in triangle ABC, we can use the Law of Sines, which states that in any triangle, the ratio of the length of a side to the sine of its opposite angle is constant.

Using the Law of Sines, we have sin(A)/a = sin(B)/b. Plugging in the given values, we get sin(A)/36 = sin(51°)/35.

To find the two possible values for angle A, we can solve the equation sin(A)/36 = sin(51°)/35. Taking the arcsine of both sides, we have A = arcsin((sin(51°)/35)*36).

Calculating this expression, we find two possible values for angle A:

A ≈ 53.1° (rounded to the nearest tenth)

A ≈ 129.9° (rounded to the nearest tenth)

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Maximize Z = -2x1 + x2 - 4x3 + 3x4 subject to the following constraints:

x1 + x2 + x3 + 2x4 + s1 = 4,

-x1 + x3 + x4 - s2 = -1,

2x1 + x2 + s3 = 2,

and x1 + 2x2 + x3 + 2x4 = 2, where x1, x2, x3, x4, s1, s2, s3 ≥ 0.

To reformulate the given problem in the standard form of a linear programming model, we need to convert all the inequalities into equations and express all variables as non-negative.

The standard form of a linear programming problem is as follows:

Maximize (Z) = c1x1 + c2x2 + c3x3 + c4x4

Subject to:

a11x1 + a12x2 + a13x3 + a14x4 = b1

a21x1 + a22x2 + a23x3 + a24x4 = b2

a31x1 + a32x2 + a33x3 + a34x4 = b3

an1x1 + an2x2 + an3x3 + an4x4 = bn

x1, x2, x3, x4 >= 0

Now let's reformulate the given problem:

Maximize (Z) = -2x1 + x2 - 4x3 + 3x4

Subject to:

x1 + x2 + x3 + 2x4 <= 4

-x1 + 0x2 + x3 + x4 >= -1

2x1 + x2 + 0x3 + 0x4 <= 2

x1 + 2x2 + x3 + 2x4 = 2

x1, x2, x3, x4 >= 0

The reformulated linear programming problem in standard form is as follows:

Maximize (Z) = -2x1 + x2 - 4x3 + 3x4

Subject to:

x1 + x2 + x3 + 2x4 + s1 = 4

-x1 + x3 + x4 - s2 = -1

2x1 + x2 + s3 = 2

x1 + 2x2 + x3 + 2x4 = 2

x1, x2, x3, x4, s1, s2, s3 >= 0

Note: The reformulated problem includes slack variables s1, s2, and s3 to convert the inequalities into equations, and all variables are non-negative.

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the ratios are ratio proportional

Answer:

  \(a_n=a_{n-1}-8;\ a_1=38\)

Step-by-step explanation:

The meaning of ...

  \(a_n=a_{n-1}-8\)

is that each term is 8 less than the one before. That is the description you're trying to match.

The meaning of ...

  \(a_1=38\)

Is that the first term is 38. Even if you don't know the first term, you do know that it is not 14. The fourth term is 14, as the problem statement tells you. Since each term is smaller than the one before, we know the first term is larger than the fourth term, so is larger than 14.

This information is sufficient to let you choose the correct answer.

  \(\boxed{a_n=a_{n-1}-8;\ a_1=38}\)

Answer: -5

Step-by-step explanation:

Answer:

\( - \frac{5}{3} \)

Answer:

u = < 25, - 15 >

Step-by-step explanation:

To find u subtract the coordinates of the terminal point from the coordinates of the initial point.

u = < 8 - (- 17) , - 11 - 4 > = < 8 + 17, - 15 > = < 25, - 15 >

Answer:

Step-by-step explanation:

Among the options given in the question, the following are the properties of the linear correlation coefficient:

The linear correlation coefficient is always between−1 and 1. That​ is,−1≤r≤1.

A linear correlation of −0.742 suggests a stronger negative association between two variables than a linear correlation of −0.472.

If r=−​1, then a perfect negative linear relation exists between the two variables.

Properties of linear correlation coefficient:

Linear correlation coefficient is a value calculated from given data and used to measure the strength of linear relationship between two variables, for instant between x and y variables.

The sign of this coefficient (r) indicates the direction linear relationship will take between x and y. Below are some properties of the linear correlation coefficient:

Now, the properties of the linear correlation coefficient among the given ones in the question are:

b. The linear correlation coefficient is always between−1 and 1. That​ is,−1≤r≤1.

d. A linear correlation of −0.742 suggests a stronger negative association between two variables than a linear correlation of −0.472.

f. If r=−​1, then a perfect negative linear relation exists between the two variables.

Hence, options b, d and f are correct.

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Rate of change of Panting A over a year period

Rate of change of Panting B over a year period

Painting B increases more quickly

Rate of change of Panting A over a year period, using the function f(x)=30,000(1.068)^x

at x = 0, f(x) = 30,000

at x = 1, f(x) = 32,040

rate of change = (30 000 - 32 000) / (0 - 1) = -2000 / -1 = 2000

Rate of change of painting B over a year period

= (25 - 27.5) * 1000 / (0 - 1)

= -2.5 * 1000 / -1

= 2500

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Answer: c) -1/6, check picture below

Step-by-step explanation: