SOMEONE WHOS GOOD AT MATHS HELP ME. ILL MARK U AS BRAINLIST AND 5 STAR! this shi is so confusing


A market stall holder bought a variety of coloured 'hoodies' to sell. Each hoodie costs the stall holder $20 and she intends to sell them to the public at a mark up of 65%

To improve the sales of the hoodies for her second day at the market, the stall holder decides to offer a 10% discount on the selling price
a) what is the discount amount for each hoodie?

Answer:

D

Step-by-step explanation:

Answer:

(21 ft)(π/2) + 21 ft

Step-by-step explanation:

Here the diameter of the semicircle is 21 ft.          

                                                                                                                 πd

Half of the circumference of the full circle with diameter 21 ft is C = ---------

                                                                                                                     2

so if d = 21 ft, that half circumference is πd/2.

To this add the diameter (the horizontal line defining the bottom of the

figure):  πd/2 + d = (21 ft)(π/2) + 21 ft.

Perimeter of this semicircle is P =

The mean and standard deviation of the sampling distribution of the sample mean (average) of the SAT math scores are:

(b) Mean = 515, SD = 114/√100

Since, SAT Math Scores Mean, SD

The mean of the sampling distribution of the sample mean is equal to the population mean (515), because the expected value of the sample mean is equal to the population mean. The standard deviation of the sampling distribution of the sample mean is called the standard error, and it is equal to the population standard deviation divided by the square root of the sample size (114/√100).

The result (b) is determined based on the central limit theorem, which states that as the sample size increases, the distribution of the sample mean approaches a normal distribution with mean equal to the population mean and standard deviation equal to the population standard deviation divided by the square root of the sample size.

In this case, the population mean is 515 and the population standard deviation is 114,

so the standard deviation of the sampling distribution of the sample mean is equal to 114/√100.

This result can be mathematically proven using the formula for the standard deviation of the sample mean:

SD of sample mean = σ/√n,

where σ is the population standard deviation and n is the sample size.

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Answer:

common difference is 0.5

first term is 5

Step-by-step explanation:

use the formula for the nth term of an ap Tn=a+(n-1)d

T12=10.5

T18=13.5

therefore come up with two equations

T12=a+(12-1)d

10.5=a+11d(1st equation)

T18=a+(18-1)d

13.5=a+17d(2nd equation)

then solve both as a simultaneous equation

a+11d=10.5

a+17d=13.5

-6d/-6=-3/-6

d=0.5

use one of the equations to find the first term

a+11(0.5)=10.5

a+5.5=10.5

a=10.5-5.5

a=5

I hope this helps

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Answer:

We are missing 210

Step-by-step explanation:

3*4 = 12

3*70 =210

3*300=900

We are missing 210

Answer:

3 × 4 = 12

3 × 70 = 210

3 × 300 = 900

So, we are missing 210.

Answer:

x=21

Step-by-step explanation:

6-1/3x=-1

-6        -6

-1/3x=-7

__     __

-1/3    -1/3

x=21

Hello!

Let's solve:

 \(\text{Copy down the equation}\\6-\dfrac{x}{3}=-1 \\\\\text{Move 'x/3' to the right side and '-1 to the other side}\\6+1=\dfrac{x}{3}\\ 7=\dfrac{x}{3} \\\\\text{Multiply 3 to both sides}\\7*3=3*\frac{x}{3} \\x = 21\)

Answer: x = 21

Hope that helps!

Answer:

y=4

Step-by-step explanation:

The x axis is a horizontal line ( y=0)

A line parallel would also be of the form y= something  and be a horizontal line

The only answer of the form y=   is y=4

In situation a, the predictor variable is age, as it is being tested to see if it affects the outcome variable, which is the number of risky behaviors. So, age is the independent variable and the number of risky behaviors is the dependent variable.

In situation b, the predictor variable is the number of family members, as it is being tested to see if it affects the outcome variable, which is the level of education of children. So, the number of family members is the independent variable and the level of education of children is the dependent variable.

It is important to identify the predictor variable and the outcome variable in any study as this helps in understanding the relationship between the two variables and in interpreting the results accurately.

For situation A, the predictor variable is "age," and the outcome variable is "number of risky behaviors." As age increases, the study aims to see if the number of risky behaviors changes.

For situation B, the predictor variable is "number of family members," and the outcome variable is "level of education of children." The study examines whether the children's level of education changes based on the number of family members.

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Answer:

x = -2 or x = -1/2

Step-by-step explanation:

We can just set up an equation where the quadratic is equal to -10, and then solve the equation:

\(2x^2+5x-8=-10\\2x^2+5x+2=0\\\\\)

Now, factor:

\((2x+1)(x+2) = 0\\x=-2 \text{ or } x=-1/2\)

Based on the given table which shows the number of years with a company in relation to the employee salary, the conclusion that can be drawn is There is a weak positive correlation between the variables.

When two variables are said to be positively correlated, then it means that when one variable increases, the other variable would increase as well.

If the correlation between them is strong, then the increase between the variables would be more uniform i.e. we can tell with higher accuracy, how the increase in one variable would affect the other.

In the table, we see that with every increase in the number of years with the company, there is an increase in the salary. This means that there is a positive correlation.

The increase is not uniform however. Sometimes it increases by $1,000, and other times by $7,000. As the increase is not uniform, it means that the correlation is weak.

In conclusion, there is a weak positive correlation between number of years and salary.

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The sequence is arithmetic. The common difference is 6. Answer: b

If a sequence is arithmetic, there exists a common difference d that is added to each term to get the next term. For instance, given the sequence 2, 5, 8, 11, 14, ...  to get each of the subsequent terms, we add 3. 2 + 3 = 5; 5 + 3 = 8, and so on.

The given sequence is 2,7,13,20, ...To determine whether it is an arithmetic sequence, we need to find the common difference d.

Subtract each subsequent term from its preceding term;7 - 2 = 513 - 7 = 620 - 13 = 7

Therefore, the common difference d is 6.

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Answer:

2167.7 sq yds

Step-by-step explanation:

SA(cone) = πr² + πrs     ('s' = slant height)

= π(15)² + π(15)(31)

= 225π + 465π

= 690π

= 2167.7

The equation representing the cost, C, of air conditioning your home, in dollars per day, when the temperature outside is T degrees Fahrenheit is given by the function C(T).

We need the information about the relationship between the cost, C, of air conditioning your home in dollars per day and the temperature outside is T degrees Fahrenheit.

It is mentioned that the cost, C, of air conditioning your home is dependent on the temperature outside, so we can say that it is a function of the temperature outside, T.

In mathematical terms, this can be written as:

C(T)

Here, C is a function of T, which implies that the cost of air conditioning depends on the temperature outside.

Hence, this equation tells us the relationship between C and T.

The equation, therefore, could be a linear or a nonlinear equation, depending on the nature of the relationship between C and T.

So, we can say that the equation representing the cost, C, of air conditioning your home, in dollars per day, when the temperature outside is T degrees Fahrenheit is given by the function C(T).

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The reduced gradient is analogous to the residual for linear models.

In linear regression, the residual represents the difference between the observed values and the predicted values of the dependent variable. Similarly, in optimization, the reduced gradient represents the difference between the current solution and the optimal solution. It is a measure of how far the current solution is from the optimal solution in the direction of the search. By minimizing the reduced gradient, we can move closer to the optimal solution.

The reduced gradient is a widely used optimization technique in non-linear programming that allows for efficient computation of the descent direction at each iteration while accounting for constraints. It involves calculating a partial derivative of the objective function with respect to the variables that are not restricted by the constraints, and then projecting the resulting gradient onto the space defined by the constraints. The resulting vector is called the reduced gradient, and it points in the direction of the steepest descent that is feasible.

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Answer is in the photo. Click on the photo.

Answer:

center = origin (0,0)

radius = 3

to graph it, draw a circle that goes through the points (3,0), (0,3), (-3,0), (0,-3)

Step-by-step explanation:

Answer:

The slope is 2

Step-by-step explanation:

Using the slope formula \(\frac{y2-y1}{x2-x1}\)

\(\frac{-7-(-8)}{-14-(-16)}\)=\(\frac{1}{2}\)= 2

The slope is 2

\( \frac{1}{2} \times {}^{2} = 0.72 = \times 1 = - \frac{6}{5 } \: \times 2 = \\ \frac{6}{5} \)

Answer:

C. 51.3 kg

Step-by-step explanation:

Calculation for How much weight did the pony gain from March to May

Weight gain from March to May=364.6 kilograms-313.3 kilograms

Weight gain from March to May=51.3 kg

Therefore the weight that the pony gain from March to May will be 51.3kg

Answer:

y = 21°

Step-by-step explanation:

both are parallel lines, and that means

16x - 23 = 10x + 1

16x - 10x = 23 + 1

6x = 24

x = 4

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

taking 16x - 23

16 (4) - 23 = 64 - 23 = 41

both angles value is = 41°

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

62° + x = 180

x = 180 - 62 = 118°

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

the sum of all the angles inside the triangle is equal to 180°

41° + 118° + y = 180°

y = 21°

Answer:

Step-by-step explanation:

Bob's deal : 11/10= 1.1 dollars per bagel

Danny's bagel=3/4=0.75 dollars per bagel

Danny's deal is better the price is lower

2- fraction : 11/10>3/4

1.1>0.75 the lower the price the better

3- Danny's deal is better because the price of 10 bagels=7.5 dollars

Answer: B (The cost of a notebook is $0.75, and the cost of a folder is $0.25.)

Step-by-step explanation:

No need for explanation. i know i’m right!!

Answer:

5, 240

Step-by-step explanation:

The expression that represents the statement is 30x - 100.

An expression in mathematics are two or more statements that are connected by at least one mathematical operation but does not have an equal to sign.

The product of two numbers is the result of a multiplication process. For example, the product of 2 and 3 is 6. This means that 2 multiplied by 3 is 6. Fewer means subtraction. Thus the product of 30 and x has to be subtracted from 100.

(30 × x) - 100

30x - 100

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True. A budget is a numerical representation of an organization's plan for the future.

It is employed to forecast the organization's anticipated earnings and costs for a given timeframe, typically a fiscal year.

This makes it easier for the business to calculate how much cash it will need to pay its bills and how much it may set aside for investments in the future.

The budget aids the business in making plans for unforeseen circumstances like a decline in sales or an increase in expenses.

The company may more effectively decide how to spend its resources and establish long- and short-term plans by using numerical data to forecast demands.

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Answer:

\(y - 8 = - \frac{1}{3} (x - 2)\)

a) The total number of possible outcomes is n = 16 outcomes

b) The probability of selecting an orange ball and a blue ball in either order is given by P = 2/9

The probability that an event will occur is measured by the ratio of favorable examples to the total number of situations possible

Probability = number of desirable outcomes / total number of possible outcomes

The value of probability lies between 0 and 1

Given data ,

Let the probability of selecting an orange ball and a blue ball in either order be represented as P

Now , the value of P is

The total number of balls in the bag = 4 balls

The number of blue balls = 2

The number of yellow balls = 1

The number of orange balls = 1

The total number of outcomes S = { ( blue , blue ) , ( blue , orange ) , ( orange , blue ) , ( yellow , blue ) , ( blue , yellow ) , ( yellow , orange ) , ( orange , yellow ) , ( yellow , yellow ) , ( orange , orange ) }

Now , the sample space of selecting 2 balls that are orange and a blue ball is A = { ( orange , blue ) , ( blue , orange ) }

So , the probability of selecting an orange ball and a blue ball in either order is P = 2/9

Hence , the probability is 2/9

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Answer:

Temperature of the water

Step-by-step explanation:

In every study, there must be a dependent variable and an independent variable. The effect of the independent variable on the dependent variable is monitored by carefully manipulating the independent variable and observing the response it produces on the dependent variable.

In this study, the independent variable is the temperature of the water while the dependent variable is plant growth. The various temperatures of the water used to water the plant will after its growth.

Answer:

118 feet.

Step-by-step explanation:

have a great day:)

Answer:

618

Step-by-step explanation: