How many minutes is it before 12 noon if 68 minutes ago it was three times as many minutes past 10 a.m.?​

Answer:

Step-by-step explanation:

sp = 504

gain = 12%

in this case

sp =100%+12%=504

112%=504

1%=504/112 =4.5

100%=450

so cost =$450

Hope im correct, if i am im glad to be of service.

Answer:0

Step-by-step explanation:

The sum of a convergent geometric series can be calculated with the formula a ⁄ 1 – r, where “a” is the first term in the series and “r” is the number getting raised to a power. A geometric series converges if the r-value (i.e. the number getting raised to a power) is between -1 and 1. So the answer is 0

8x^2y + 12xy - 16xz

= 4x (2xy+3-4z)

Answer: 4x(2xy+3-4z)

Answer:

85 cents

Step-by-step explanation:

34÷40= .85

adding characters to get to 20

You have the correct sequence of reasons

Here's what the full step by step picture looks like

3.25(1.25x + 0.5) = 10.5  ................ given

4.0625x +  1.625 = 10.5  ................ distributive property

4.0625x = 8.875  ................ subtraction property of equality

x = 2.18461538461539 ....... division property of equality

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

Notes:

Answer:

I am pretty sure that is right

Step-by-step explanation:

\(3.25(1.25+0.5) = 10.5\)   is given

Then you distribute the \(3.25\\\) to the \(1.25x\) and the \(0.5\).

\(3.25(1.25x)=4.06x\)

\(3.25(0.5)=1.6\)

So the new equation would be \(4.06x + 1.6= 10.5\)

Then you would subtract \(1.6\) from each side to get \(4.06x=8.9\)

Finally you would divide each side by \(4.06\) to get \(x= 1.93\).

Answer: x ≤ − 3/2

how i got the answer : I used something but it wont let me say ;-; hope it helps!

Answer:

Interval

Step-by-step explanation:

The interval scale is guageable and data following this scale can be added and subtracted.

Years are values we can either subtract or minus so they fall under the interval scale.

Also, they have no absolute zero, which is a characteristic of the interval scale.

The rate of change of the Distance between the planes is zero. This means that the distance between the planes remains constant throughout their respective flights.

The rate of change of the distance between the planes, we need to determine how the distance between them changes over time.

the distance between the two planes is represented by the variable D, and time is represented by the variable t.

At noon, the southbound plane starts flying and continues for 4 hours until 4 pm. During this time, the plane covers a distance of 900 km/h * 4 hours = 3600 km due south.

Meanwhile, the eastbound plane is also traveling towards the airport. It starts from a distance of 2000 km away from the airport at 4 pm.

To find the distance between the planes at any given time, we can use the Pythagorean theorem, as the planes are moving at right angles to each other. The distance D between the planes can be calculated as:

D^2 = (2000 km)^2 + (3600 km)^2

Simplifying the equation:

D^2 = 4000000 km^2 + 12960000 km^2

D^2 = 16960000 km^2

Taking the square root of both sides:

D = sqrt(16960000) km

D = 4120 km

Now, we can find the rate of change of the distance between the planes by calculating the derivative of the distance equation with respect to time

dD/dt = 0

Since the distance between the planes is constant, the rate of change is zero.

Therefore, the rate of change of the distance between the planes is zero. This means that the distance between the planes remains constant throughout their respective flights.

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Answer:

a. The 95% confidence interval is 1,022.94559 < μ < 1,003.0544

b. There is significant evidence that Florida students perform differently (higher mean) differently than other students in the United States

c. i. The 95% confidence interval for the change in average test score is; -18.955390 < μ₁ - μ₂ < 6.955390

ii. There are no statistical significant evidence that the prep course helped

d. i. The 95% confidence interval for the change in average test scores is  3.47467 < μ₁ - μ₂ < 14.52533

ii. There is statistically significant evidence that students will perform better on their second attempt after the prep course

iii. An experiment that would quantify the two effects is comparing the result of the confidence interval C.I. of the difference of the means when the student had a prep course and when the students had test taking experience

Step-by-step explanation:

The mean of the standardized test = 1,000

The number of students test to which the test is administered = 453 students

The mean score of the sample of students, \(\bar{x}\) = 1013

The standard deviation of the sample, s = 108

a. The 95% confidence interval is given as follows;

\(CI=\bar{x}\pm z\dfrac{s}{\sqrt{n}}\)

At 95% confidence level, z = 1.96, therefore, we have;

\(CI=1013\pm 1.96 \times \dfrac{108}{\sqrt{453}}\)

Therefore, we have;

1,022.94559 < μ < 1,003.0544

b. From the 95% confidence interval of the mean, there is significant evidence that Florida students perform differently (higher mean) differently than other students in the United States

c. The parameters of the students taking the test are;

The number of students, n = 503

The number of hours preparation the students are given, t = 3 hours

The average test score of the student, \(\bar{x}\) = 1019

The number of test scores of the student, s = 95

At 95% confidence level, z = 1.96, therefore, we have;

The confidence interval, C.I., for the difference in mean is given as follows;

\(C.I. = \left (\bar{x}_{1}- \bar{x}_{2} \right )\pm z_{\alpha /2}\sqrt{\dfrac{s_{1}^{2}}{n_{1}}+\dfrac{s_{2}^{2}}{n_{2}}}\)

Therefore, we have;

\(C.I. = \left (1013- 1019 \right )\pm 1.96 \times \sqrt{\dfrac{108^{2}}{453}+\dfrac{95^{2}}{503}}\)

Which gives;

-18.955390 < μ₁ - μ₂ < 6.955390

ii. Given that one of the limit is negative while the other is positive, there are no statistical significant evidence that the prep course helped

d. The given parameters are;

The number of students taking the test = The original 453 students

The average change in the test scores, \(\bar{x}_{1}- \bar{x}_{2}\) = 9 points

The standard deviation of the change, Δs = 60 points

Therefore, we have;

C.I. = \(\bar{x}_{1}- \bar{x}_{2}\) + 1.96 × Δs/√n

∴ C.I. = 9 ± 1.96 × 60/√(453)

i. The 95% confidence interval, C.I. = 3.47467 < μ₁ - μ₂ < 14.52533

ii. Given that both values, the minimum and the maximum limit are positive, therefore, there is no zero (0) within the confidence interval of the difference in of the means of the results therefore, there is statistically significant evidence that students will perform better on their second attempt after the prep course

iii. An experiment that would quantify the two effects is comparing the result of the confidence interval C.I. of the difference of the means when the student had a prep course and when the students had test taking experience

The true statement is (b) she did not represent the two original factors correctly on the headers

The product expression is given as:

(-2x - 1)(2x - 1)

Expand the expression

(-x - x - 1)(x + x - 1)

This means that the header of the algebra tiles would be:

-x, -x, 1 and x, x and -1

From the figure, we can see that this is incorrectly represented

Hence, the true statement is (b)

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Answer:

l don't understand......

Answer:

The answer is 17 packets

Answer:

17 or 17.25

Step-by-step explanation:

20 oz is 69 grams divided by 4 and its 17

The minimum amount of paint needed to paint the walls of the room would be 2,2 gallon.

To calculate the amount of paint we need to paint the walls of the room we must calculate the area of each of the walls, in this case it would be 4 rectangles with the following dimensions:

According to the above, the area of the walls would be:

Based on the above, it can be inferred that 2.2 gallons of paint are needed to paint all the walls.

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Answer:

I think its C

Step-by-step explanation:

Answer:

c

Step-by-step explanation:

Keep in mind, whatever is inside of the square root, stays inside of the square root, and whatever is outside, stays outside, they don't multiply together. With parenthesis, exponents multiply, if there's no parenthesis, the exponents don't multiply. In this case, the exponents add.

Multiply each one together:

sqrt(6x^2) x sqrt(9x) = sqrt(54x^3)

sqrt(6x^2) x -(x sqrt(5x^5)) = -x sqrt(30x^7)

4 sqrt(8x^3) x sqrt(9x) = 4 sqrt(72x^4)

4 sqrt(8x^3) x -(x sqrt(5x^5)) = -4x sqrt(40x^8)

Then simplify:

sqrt(54x^2) = 3x sqrt(6x)

x sqrt(30x^7) = -x^4 sqrt(30x)

4 sqrt(72x^4) = 24x^2 sqrt(2)

-4x sqrt(40x^8) = -8x^5 sqrt(10)

Answer:

it's D) (412 mi) trust me

Step-by-step explanation

The actual distance if the map scale is 1 cm:8 mi is 412 meters.

We have given that,

On a map, the distance between Los Angeles, CA and San Francisco, CA is 51.5 cm.

We have to determine

The actual distance if the map scale is 1 cm:8 mi.

Distance is a numerical measurement of how far apart objects or points are. In physics or everyday usage, the distance may refer to a physical length or an estimation based on other criteria.

Therefore the total distance is 412 meters.

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Answer:

Therefore, you need 2600 pounds of 35% supplement and 1300 - 2600 = -1300 pounds of 10% ration.

Step-by-step explanation:

The unknown variable is x, which is the amount of 35% supplement needed. The other expressions are derived from the given information and the fact that the total amount of solution is 1300 pounds.

The equation from the fourth column is:

0.35x + 0.10(1300 - x) = 0.25(1300)

Solving for x, we get:

x = (0.25(1300) - 0.10(1300)) / (0.35 - 0.10) x = 650 / 0.25 x = 2600

An expression for the area of △KNM is = 1/2 x 2b x a

Given,

In the question:

In triangle KNM ;

The length of the base (MK) = 2b

and, height of the triangle is= a

To write an expression  for the area of △KNM .

Now, According to the question:

We know that :

Area of triangle is = 1/2 x base x height

The length of the base (MK) = 2b

and, height of the triangle is= a

Plug all the values in the area of triangle :

Here, Area of triangle is = 1/2 x 2b x a

Hence, An expression for the area of △KNM is = 1/2 x 2b x a.

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Answer:

x = 5

Step-by-step explanation:

To solve for x, we need to isolate x on one side of the equation. We can do this by subtracting 5 from both sides of the equation:

2x + 5 - 5 = 15 - 5

Simplifying:

2x = 10

Now we can solve for x by dividing both sides of the equation by 2:

2x/2 = 10/2

Simplifying:

x = 5

Therefore, x = 5 is the solution to the equation 2x + 5 = 15.

Answer:

-2x-5=15 One solution was found : x = -10 Rearrange: Rearrange the equation by subtracting what is to the right of the equal sign from both sides of the equation :

Step-by-step explanation:

have a nice day.

Answer: 77 cars

Step-by-step explanation: 6.50 * 77 = 500.5

Answer: a. Statistic because the value is a numerical measurement describing a characteristic of a sample.

Step-by-step explanation: Statistic are numerical characteristics drawn or obtained from a sample which is a subset of a population. Numerical values obtained from a population of data is called parameter. Hence, since the set of professors from which the value of those who own a television being 40% was drawn is stated as being a sample. Then all numerical characteristics obtained from the dataset will be referred to as a statistic.

Answer:

Please provide more information. The person solving the problem must know the equation you wrote in exercise 5, and you did not provide that information.

The percentile of 6.2 in the given data set is 40%.

To determine the percentile of 6.2 in the given data set, we can use the following steps:

Arrange the data set in ascending order:

4.2, 4.6, 5.1, 6.2, 6.3, 6.6, 6.7, 6.8, 7.1, 7.2

Count the number of data points that are less than or equal to 6.2. In this case, there are 4 data points that satisfy this condition: 4.2, 4.6, 5.1, and 6.2.

Calculate the percentile using the formula:

Percentile = (Number of data points less than or equal to the given value / Total number of data points) × 100

In this case, the percentile of 6.2 can be calculated as:

Percentile = (4 / 10) × 100 = 40%

The percentile of 6.2 in the sample data set is therefore 40%.

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Answer:

\( (x, y) = (2, 1) \)

Step-by-step explanation:

Given vertices of a triangle:

\( (x_1, y_1) = (-4, -2) \)

\( (x_2, y_2) = (1, 0) \)

\( (x_3, y_3) = (9, 5) \)

Using the centroid formula:

\( (x, y) = (\frac{x_1 + x_2 + x_3}{3}, \frac{y_1 + y_2 + y_3}{3}) \)

Plug in the values into the formula

\( (x, y) = (\frac{-4 + 1 + 9}{3}, \frac{-2 + 0 + 5}{3}) \)

\( (x, y) = (\frac{6}{3}, \frac{3}{3}) \)

\( (x, y) = (2, 1) \)

Answer:

4:9

Step-by-step explanation:

To find the ratio of males to the total number of people present, we need to divide the number of males by the total number of people.

The total number of people present is the sum of the number of females and the number of males:

Total = 125 females + 100 males = 225 people

So the ratio of males to the total number of people present is:

100 males / 225 people

To simplify this ratio, we can divide both the numerator and denominator by the greatest common factor, which is 25.

So the simplified ratio is:

100/225 = 4/9

So the ratio of males to the total number of people present is 4:9

Answer:

y = -2x + 13

Need to know:

y = mx + b

Slope formula: y₂ - y₁/x₂ - x₁

Step-by-step explanation:

First, we have to find the slope of the equation.

To find this we use this equation: y₂ - y₁/x₂ - x₁

x₁ = 2

x₂ = 5

y₁ = 9

y₂ = 3

(3 - 9)/(5 - 3) = -6/3 = -2

The slope of of the equation is -2

y = -2x + b

Plug in one of the given coordinates. We'll use (5, 3)

3 = -2(5) + b

3 = -10 + b

Add 10 to both sides

3 = -10 + b

+ 10  + 10

b = 13

y = -2x + 13

Answer:

7.5

Step-by-step explanation:

there is 1.5 cups of sugar for each cup of flour

1.5x5=7.5

Answer:

7.5 cups of sugar

Step-by-step explanation:

3/2 = 1.5 (this means there is 1.5 cups of sugar for every one cup of flour)

5 * 1.5 = 7.5