Pls help I need this answer

Answer:

If 200 is four qoaters, then 1 quater is 200/4 is 50. so 50 ice creams is strawberry. One quater in procantage is 25%.

after that you count how many ice crams are vanilia

\(\frac{42}{200}\) after you divide it  you get 0.21 which is 21%

After you just deduct 25+21 from 100

you get

100-46=54

the answer is 54%

i hope this is right

Answer:

A sample of 2017 people should be taken.

Step-by-step explanation:

In a sample with a number n of people surveyed with a probability of a success of \(\pi\), and a confidence level of \(1-\alpha\), we have the following confidence interval of proportions.

\(\pi \pm z\sqrt{\frac{\pi(1-\pi)}{n}}\)

In which

z is the zscore that has a pvalue of \(1 - \frac{\alpha}{2}\).

The margin of error is:

\(M = z\sqrt{\frac{\pi(1-\pi)}{n}}\)

Suppose a 95% confidence level:

So \(\alpha = 0.05\), z is the value of Z that has a pvalue of \(1 - \frac{0.05}{2} = 0.975\), so \(Z = 1.96\).

Preliminary estimate of the proportion who smoke of .30.

This means that \(\pi = 0.3\)

a. How large a sample should be taken to estimate the proportion of smokers in the population with a margin of error of .02 (to the nearest whole number)

This is n for which M = 0.02. So

\(M = z\sqrt{\frac{\pi(1-\pi)}{n}}\)

\(0.02 = 1.96\sqrt{\frac{0.3*0.7}{n}}\)

\(0.02\sqrt{n} = 1.96\sqrt{0.3*0.7}\)

\(\sqrt{n} = \frac{1.96\sqrt{0.3*0.7}}{0.02}\)

\((\sqrt{n})^2 = (\frac{1.96\sqrt{0.3*0.7}}{0.02})^2\)

\(n = 2016.84\)

To the nearest whole number, 2017.

A sample of 2017 people should be taken.

The independent events are: Rolling a number cube, rolling again, and trying to match the first roll:.

Independent events are events in which the occurrence or non-occurrence of one event has no effect on the probability of the occurrence or non-occurrence of the other event.

The independent events are:

Rolling a number cube, rolling again, and trying to match the first roll: The outcome of the second roll does not depend on the outcome of the first roll, so they are independent events.

Randomly choosing a marble from a bag, replacing it, and choosing again: The outcome of the first selection does not affect the probability of the second selection, so they are independent events.

The other two scenarios are not independent events:

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Subtract 229 and 164 its 65 so thats your answer .

Answer:

  x = 2.4

Step-by-step explanation:

We assume you intend ...

  \(\sqrt{x^2+49}=x+5\\\\x^2+49=x^2+10x+25\qquad\text{square both sides}\\\\24=10x\qquad\text{subtract $x^2+25$}\\\\\boxed{2.4=x}\qquad\text{divide by 10}\)

Relative interest refers to the comparison of interest rates between different financial instruments or investment opportunities. It allows individuals or investors to assess and evaluate the attractiveness of various options based on their potential returns.

1. Understand the basic concept: Interest is the cost of borrowing money or the return earned on invested funds. Relative interest involves comparing the interest rates of different financial instruments or investments to determine which one offers a more favorable return.

2. Identify the investment options: Start by identifying the different investment opportunities or financial instruments available. These can include savings accounts, certificates of deposit (CDs), bonds, stocks, or other investment vehicles.

3. Research interest rates: Research and gather information about the current interest rates offered by each investment option. This information can usually be found on financial websites, through financial institutions, or by consulting with a financial advisor.

4. Compare interest rates: Once you have the interest rates for each investment option, compare them side by side. Look for the differences in rates and identify which options offer higher or lower returns.

5. Assess risk and return: Consider the level of risk associated with each investment option. Higher returns often come with higher risk, so it's essential to evaluate the risk-reward tradeoff.

6. Make an informed decision: Based on the comparison of interest rates and the risk-reward assessment, make an informed decision on which investment option aligns with your financial goals and risk tolerance.

Always remember to consider your financial goals, risk tolerance, and consult with a financial advisor if needed.

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The expression that models the length of the second leg of the triangle is 2x - 3.

Recall:

The area of a triangle = \(\frac{1}{2} bh\)

Given:

Area of triangle = \(\frac{1}{2} (6x^2 - 7x - 3)\)

Length of one of the legs = 3x + 1

Therefore, it means that multiplying both legs should give us:

\(6x^2 - 7x - 3\)

To find the expression that models the other leg, divide \(6x^2 - 7x - 3\) by 3x + 1:

\(\frac{6x^2 - 7x - 3}{3x - 1}\)

\(\frac{6x^2 - 2x - 9x - 3}{3x - 1}\\\\\frac{2x(3x - 1) - 3(3x - 1)}{3x - 1}\\\\\frac{(2x- 3)(3x - 1)}{3x - 1}\)

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

Therefore, the expression that models the length of the second leg of the triangle is 2x - 3.

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Answer:

Kendall makes 120$ profit by selling necklaces.

Step-by-step explanation:

To show how much it costs to make all the necklaces in total multiply 2 x 40 to get 80$. To show much much money she gets for the necklaces multiply 5 x 40 to get 200$.  To show how much profit she makes subtract 80$ from 200$ to get 120$.

The rear windshield wiper of a car rotated 120 degrees, as shown in the figure. The area cleared by the wiper blade is approximately 205.875 square inches.

The problem states that a car’s rear windshield wiper rotates 120 degrees, as shown in the figure. Our aim is to find the area cleared by the wiper.

The wiper's arm is represented by a line segment and has a length of 14 inches.

The wiper's blade is perpendicular to the arm and has a length of 25 inches.

Angular degree measure indicates how far around a central point an object has traveled, relative to a complete circle. A full circle is 360 degrees, and 120 degrees is a third of that.

As a result, the area cleared by the wiper blade is the sector of a circle with radius 25 inches and central angle 120 degrees.

The formula for calculating the area of a sector of a circle is: A = (θ/360)πr², where A is the area of the sector, θ is the central angle of the sector, π is the mathematical constant pi (3.14), and r is the radius of the circle.

In this situation, the sector's central angle θ is 120 degrees, the radius r is 25 inches, and π is a constant of 3.14.A = (120/360) x 3.14 x 25²= 0.33 x 3.14 x 625= 205.875 square inches, rounded to the nearest thousandth.

Therefore, the area cleared by the wiper blade is approximately 205.875 square inches.

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Answer:

Step-by-step explanation:

You want a system of equations and a graphical solution for the scenario that the weight of peaches sold (y) is 3 times the weight of apples sold (x), and the revenue from sales of apples at $3/lb and peaches at $4/lb was a total of $240.

The revenue equation can be ...

  3x +4y = 240

The relation between pounds of each fruit sold can be ...

  y = 3x

The graph is attached. The solution is (x, y) = (16, 48).

16 pounds of apples and 48 pounds of peaches were sold.

__

Additional comment

We note that the 3x in the first equation can be substituted by y using the second equation. This gives 5y=240, or y = 48. Then 3x=48, so x=16. This agrees with the graphical solution, as it should.

Answer:

2.815

Step-by-step explanation:

Answer:

2.39

Step-by-step explanation:

185

----- + 50% + 4%=2.39 or 239%

100

Answer:

Step-by-step explanation:

Answer:

250

Step-by-step explanation:

because 147 rounded is 150 14 is 10 and 85 is 90 these added together are 250

The interest paid for the loan is $1748

Given that there is a 6.1% interest rate for a loan of $28,654 in student loan debt pay in the first year,

We need to find the interest paid for the same.

So,

Simple Interest = principal × time × rate / 100

= 28654 × 1 × 6.1 / 100

= 28654 × 0.061

= 1747.894

= 1748

Hence the interest paid for the loan is $1748

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Answer:

There is no significant evidence to conclude that the mean hours spent per week by teenagers is greater than 4.5

Step-by-step explanation:

H0 : μ = 4.5

H1 : μ > 4.5

Sample size, n = 15 ; sample, mean, xbar = 4.75 ; sample Standard deviation, s = 2.0

Test statistic : (xbar - μ) ÷ s/sqrt(n)

Test statistic : (4.75 - 4.5) ÷ 2/sqrt(15)

Test statistic : 0.25 / 0.5163977

Test statistic = 0.484

Using the test statistic to obtain the Pvalue :

Using α = 0.05, df = 15 - 1 = 14

Pvalue = 0.3179

Since, Pvalue > α ; we fail to reject the Null.

We conclude that ;

There is no significant evidence to conclude that the mean hours spent per week by teenagers is greater than 4.5

The probability that the sample proportion is within ± 0.02 of the population proportion is 0.3328

The given parameters are:

Start by calculating the mean:

\(\mu = np\)

\(\mu = 100 * 82\%\)

\(\mu = 82\)

Calculate the standard deviation:

\(\sigma = \sqrt{\mu(1 - p)\)

\(\sigma = \sqrt{82 * (1 - 82\%)\)

\(\sigma = 3.84\)

Within ± 0.02 of the population proportion are:

\(x_{min} = 82 * (1 - 0.02) = 80.38\)

\(x_{max} = 82 * (1 + 0.02) = 83.64\)

Calculate the z-scores at these points using:

\(z = \frac{x - \mu}{\sigma}\)

So, we have:

\(z_1 = \frac{80.36 - 82}{3.84} = -0.43\)

\(z_2 = \frac{83.64 - 82}{3.84} = 0.43\)

The probability is then represented as:

P(x ± 0.02) = P(-0.43 < z < 0.43)

Using the z table of probabilities, we have:

P(x ± 0.02) = 0.3328

Hence, the probability that the sample proportion is within ± 0.02 of the population proportion is 0.3328

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Answer: ummm i think it's -1

Step-by-step explanation:

A) If out of 92 cars in the train 49 are boxcars, then 92-49 = 43 cars are not boxcars.

B) We can calculate the fraction of the cars that are not boxcars as:

Answer:

A) 43

B) 0.4674

The size of the largest interior angle of the field is 69.86°

The law of cosines relates the lengths of the sides of a triangle to the cosine of one of its angles.

Given that, a triangular field has boundaries of lengths 170m, 195m and 210m, we need to find the size of the largest interior angle of the field,

We know that, angle opposite to the largest side is largest,

Therefore,

The largest angle is opposite is 210 m side, (say c)

Using the cosine rule,

210² = 170²+195²-2(170)(195)cosC

CosC = 170²+195²-210² / 2(170)(195)

CosC = 22825 / 66300

CosC = 0.344268477

C = 69.86°

Hence, the size of the largest interior angle of the field is 69.86°

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Answer:

Let the no. be X and Y

X - Y = (-1)

X + Y = 1

X = (-1)+ Y

X = 1 - y

- 1.+ y = 1 - y

Y + Y = 1 + 1

2y = 2

Y = 1

X = 0

Answer:

x = 0 (first number), y = 1 (second number)

Step-by-step explanation:

x will represent the first number, and y will represent the second.

x - y = -1

x + y = 1

Now, it's time to get y by itself in one equation so that we can substitute.

x - y = -1 (subtract x from both sides)

-y = -1 - x (multiply both sides by -1)

y = x + 1

Plug in x + 1 for y in the second equation.

x + x + 1 = 1 (combine the x with the x)

2x + 1 = 1 (subtract 1 from both sides)

2x = 0 (divide both sides by 2)

x = 0

Since x = 0, we can plug 0 in for x into any equation to solve for y.

0 + y = 1

y = 1

Brainliest, please :)

Answer:

m<5=131.25

Step-by-step explanation:

Divide 105 by 4.

Multiply 26.25 by 5.

Answer:

15 mph

Step-by-step explanation

i used a calculator but correct me if im wrong pls

There can be multiple outputs (monthly charges) for a given input (number of credit cards), violating the definition of a function. hence, Situation 3 does not represent a function.

Situation 3: the total amount of money charged monthly on credit cards to the number of credit cards owned does not represent a function.

In a function, each input (or x-value) should have a unique output (or y-value). However, in this situation, the total amount of money charged monthly on credit cards depends on the number of credit cards owned. It is possible to have different credit card numbers but still have the same total amount of money charged monthly.

For example, two people could own different numbers of credit cards but have the same monthly charges.

As a result, the definition of a function can be violated by having many outputs (monthly charges) for a single input (number of credit cards).

Because of this, case 3 does not represent a function.

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Answer: 76

Step-by-step explanation:

$1.30 and $1.70 is two standard deviations away from the mean on both sides of the mean, and the empirical rule for normal distribution tells us that approximately 95 percent of the data are within two standard deviations of the mean. Hence, option B is the right choice.

Data in a normal distribution is symmetrically distributed and has no skew. When displayed on a graph, the data has the shape of a bell, with most values clustering in a central region and tapering off as they go away from the center.

Because of their structure, normal distributions are sometimes known as Gaussian distributions or bell curves.

The empirical rule, often known as the 68-95-99.7 rule, indicates where the majority of your values fall in a normal distribution:

In the question, we are given that at a nearby frozen yogurt shop, the mean cost of a pint of frozen yogurt is $1.50 with a standard deviation of $0.10.

We are asked that assuming the data is normally distributed, approximately what percent of customers are willing to pay between $1.30 and $1.70 for a pint of frozen yogurt.

Following the empirical rule for a normal distribution, we need to check how many standard deviations from the mean are at $1.30 and $1.70.

$1.30 = $1.50 - 2($0.10)

and $1.70 = $1.50 + 2(0.10).

Thus, $1.30 and $1.70 is two standard deviations away from the mean on both sides of the mean, and the empirical rule for normal distribution tells us that approximately 95 percent of the data are within two standard deviations of the mean. Hence, option B is the right choice.

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Step-by-step explanation:

x(x+2)(x-3)= x(x^2-x-6)= x^3-x^2-6x

The answer is

\( {x}^{3} - {x}^{2} - 6x\)

Answer:

7/187

Step-by-step explanation:

thats it simplified if this helps

The probability of the all elements in universal set that is not in A, that is, P(A¹) = 1/3

To determine the probability of all the elements in universal set that is not in A, the formula that should be used is given as follows;

Probability = possible outcome/sample space

The sample space = 3/3 = 1

The possible outcome (A¹) = 1-⅔

= 1/3

The probability of A¹ = 1/3÷1 = 1/3

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With a monthly repayment of $809.49, the total interest on the car loan will be $5,569.67.

We assume that there are monthly repayments and compounding interest on the car loan.

With periodic repayments and compounding interest, the total interest paid on the car loan will be as shown by the car loan calculator.

Car loan = $43,000

Down payment = $0

Fixed Annual Percentage Rate (APR) = 4.9%

Loan term = 5 years

Car Loan Calculator with monthly Repayment:

Payment = $809.49/month

Interest Paid =$5,569.67

Total Paid = $48,569.67

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The "ordered-pair" which is the solution to the equation "5x + 7y = 6" is : (d) (4, -2).

The equation for which we have to find the solutions is 5x + 7y = 6,

We substitute the values of x and y into the equation to check if it holds true for each ordered pair.

Option (a) : the point is : (1, -1),

⇒ 5(1) + 7(-1) = 5 - 7 = -2 ≠ 6.

Option (b) : the point is : (2, 1),

⇒ 5(2) + 7(1) = 10 + 7 = 17 ≠ 6.

Option (c) : the point is : (3, 3),

⇒ 5(3) + 7(3) = 15 + 21 = 36 ≠ 6.

Option (d) : the point is : (4, -2),

⇒ 5(4) + 7(-2) = 20 - 14 = 6 (Correct),

Therefore, The correct answer is (d) (4, -2), because it is the only ordered pair that satisfies the equation 5x + 7y = 6.

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The given question is incomplete, the complete question is

Which ordered pairs are solutions to the equation 5x+7y=6?

(a) (1, -1)

(b) (2, 1)

(c) (3, 3)

(d) (4, -2).