While preparing for a party, Luis spent 25 minutes blowing up 10 balloons. Write an equation to express how many minutes it took him to blow up one balloon.​

Answer:

7/9 - 2/8 x 49

Step-by-step explanation:

If you like my answer than please mark me brainliest thanks

Answer:

52%

Step-by-step explanation:

I am assuming it  asking what is the chance a boy is picked.

13+12 = 25 total kids

100/25 = 4% chance for each kid to be picked

13 boys x 4 % = 52% chance for a boy to be picked.

The lower tail of the 95% confidence interval for the true proportion of high school students taking the SAT depends on the specific values obtained from the sample. Without the sample data, it is not possible to determine the exact lower tail value.

To calculate a confidence interval, the sample proportion and sample size are needed. In this case, the sample proportion of students taking the SAT is 30 out of 80, which is 30/80 = 0.375.

Using this sample proportion, along with the sample size of 80, the confidence interval can be calculated. The lower and upper bounds of the interval depend on the chosen level of confidence (in this case, 95%).

Since the lower tail value is not specified, it cannot be determined without the actual sample data. The lower tail value will be determined by the sample proportion, sample size, and the specific calculations based on the confidence interval formula. Therefore, without the sample data, it is not possible to determine the exact lower tail value.

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Answer: y= 3/2x - 6

Step-by-step explanation:

The equation is y=mx + b

The y-intercept is when x = 0, so on the table y-intercept = -6

The slope is rise/run, we see that y increase by three and x increase by 2, so the slope is 3/2

to get the slope of any straight line, we simply need two points off of it, let's use those ones in the picture below.

\((\stackrel{x_1}{2}~,~\stackrel{y_1}{-3})\qquad (\stackrel{x_2}{6}~,~\stackrel{y_2}{3}) \\\\\\ \stackrel{slope}{m}\implies \cfrac{\stackrel{rise} {\stackrel{y_2}{3}-\stackrel{y1}{(-3)}}}{\underset{run} {\underset{x_2}{6}-\underset{x_1}{2}}} \implies \cfrac{3 +3}{4} \implies \cfrac{ 6 }{ 4 } \implies {\Large \begin{array}{llll} \cfrac{3 }{ 2 } \end{array}}\)

now, the y-intercept occurs when x = 0, recheck the picture below.

Answer:

51.90

Step-by-step explanation:

the answer is 51.90

hope this helped!!!

SOLUTION

Given the question in the image, the following are the solution steps to answer the question.

STEP 1: Write the given ratios

STEP 2: Add the ratios

STEP 3: Calculate the earnings of each of them

Erin's

Kim's

Megans's

Hence, the earnings are given as:

Erin's: $1099.34

Kim's: $12825.62

Megan's: $855.04

For a given sample with n = 50, the values are -

a. 90% confidence interval for the population mean is  22.5 ± 1.92.

b. 95% confidence interval for the population mean is  22.5 ± 2.18.

c. 99% confidence interval for the population mean is  22.5 ± 2.88.

d. The margin of error and the width of the confidence interval increases, as the confidence level increases.

What is a sample?

A sample is characterised as a more manageable and compact version of a bigger group. A smaller population that possesses the traits of a bigger group. When the population size is too big to include all participants or observations in the test, a sample is utilised in statistical analysis.

a. To develop a 90% confidence interval for the population mean, we use the formula -

CI = X' ± zα/2 × (σ/√n)

where X' is the sample mean, σ is the population standard deviation (which we don't know, so we use the sample standard deviation as an estimate), n is the sample size, and zα/2 is the z-score corresponding to the desired confidence level. For a 90% confidence level, α = 0.1/2 = 0.05 and zα/2 = 1.645 (using a z-table or calculator).

Substituting the values given, we get -

CI = 22.5 ± 1.645 × (4.5/√50) ≈ 22.5 ± 1.92

So the 90% confidence interval for the population mean is (20.6, 24.4).

b. To develop a 95% confidence interval for the population mean, we use the same formula but with zα/2 = 1.96 (using a z-table or calculator).

Substituting the values given, we get -

CI = 22.5 ± 1.96 × (4.5/√50) ≈ 22.5 ± 2.18

So the 95% confidence interval for the population mean is (20.3, 24.7).

c. To develop a 99% confidence interval for the population mean, we use the same formula but with zα/2 = 2.576 (using a z-table or calculator).

Substituting the values given, we get -

CI = 22.5 ± 2.576 × (4.5/√50) ≈ 22.5 ± 2.88

So the 99% confidence interval for the population mean is (19.6, 25.4).

d. As the confidence level is increased, the margin of error and the width of the confidence interval also increase.

This is because higher confidence levels require more certainty in the estimate, which means including a wider range of values.

However, this also means that the confidence interval becomes less precise and may include a wider range of possible population means.

Therefore, the confidence interval values are obtained.

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Answer:

(x² + 4) (x² + 6)

Step-by-step explanation:

Let's check

(x² + 4) (x² + 6)

\(x^{4}\) + 6x² + 4x² + 24

\(x^{4}\) + 10x² + 24

So, (x² + 4) (x² + 6) is the correct answer.

The Cartesian coordinates are  function f(x, y, z) = (-1.14, 1.27, 1.29).

The cylindrical coordinates (ρ, φ, z) for a point in three-dimensional space are given by the expressions ρ= sqrt(x² + y²), φ= atan(y/x), and z= z, where x, y, and z are the coordinates of the point in the Cartesian system.Solution:It has been given that the cylindrical coordinates of a point are (2, 5, 6). So, ρ = 2, φ = ? and z = 6. Also, given x + y = 1. Therefore, y = 1 – x.Calculating ρ² = x² + y² = x² + (1 – x)² = 2x² – 2x + 1. Since the point lies outside the cylinder x + y = 1, then we get 2x² – 2x + 1 > 1, or equivalently, x² – x > 0. Solving this inequality, we get 0 < x < 1 (since ρ > 0). Now, φ = atan(y/x) = atan((1 – x)/x). Using this we get the values of spherical coordinates as, Spherical coordinates : ρ = 2, θ = atan((1 - x)/x), φ = cos⁻¹ (6/√(4+25+36)) = cos⁻¹ (6/√65) = 1.217 radian  Now, to find the cartesian coordinates we need to use the expressions:x= ρcos(θ)sin(φ) = 2cos⁻¹((1-x)/x)sin(1.217)y= ρsin(θ)sin(φ) = 2sin⁻¹((1-x)/x)sin(1.217)z= ρcos(φ) = 2cos(1.217)

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Answer:

4

Step-by-step explanation:

50-18=32, 32÷8=32

(brainly wants long awnsers so abcdefg)

Shane eat 4 fruits snacks everyday for 8 days.

Division method is used to distributing a group of things into equal parts. Division is just opposite of multiplications. For example, dividing 20 by 2 means splitting 20 into 2 equal groups of 10.

Given that;

Shane had a box of 50 fruit snacks, he ate the same number of fruit snacks everyday for 8 days.

Here, He now has 18 fruit snacks left.

So, Number of eat fruits = 50 - 18

                                      = 32

Since, He ate the same number of fruit snacks everyday for 8 days.

Hence, Number of fruits ate in 1 day = 32 / 8

                                                         = 4

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To solve without a calculator, we can use the identity cos(180° - θ) = -cosθ, which means that:

cos 20° = cos(180° - 20°) = -cos 160°

Substituting this into the original equation gives:

-3(-cos 160°) - 6 = 19 cos θ

Simplifying this expression gives:

3 cos 160° - 6 = 19 cos θ

Using the fact that cos 160° = cos(-20°), we can rewrite this as:

3 cos (-20°) - 6 = 19 cos θ

Now, using the identity cos(-θ) = cosθ, we get:

3 cos 20° - 6 = 19 cos θ

Adding 6 to both sides and dividing by 19, we obtain:

cos θ = (-3 cos 20° + 6)/19

Using a table of trigonometric values, we can find that cos 20° is approximately 0.9397. Substituting this value into the equation above, we get:

cos θ ≈ (-3 × 0.9397 + 6)/19

cos θ ≈ -0.628

Since -1 ≤ cos θ ≤ 1, there are no angles between 0° and 360° that satisfy the equation to the nearest 10th of a degree. Therefore, the answer is that there are no solutions.

The right answers are

1. C, 1

2. B, an+1 = an x 3, a1 =5

3. C, an = -6 x 0.5^n-1

4. D, an + 2/3 x (1/2)^n-1

5. D, an+1 = an x (-2), a1 = 5

I just took the test and got 100% so these should be correct

Answer:

17

Step-by-step explanation:

Now it says the number is 68 less than 5 times a number. x=68. Thus the number will be 17.

The number will be equal to -30.

Expression in maths is defined as the collection of the numbers variables and functions by using signs like addition, subtraction, multiplication, and division.

The number will be calculated by making the following expression:-

5 - ( x / 2) = 20

10 - x = 40

x = -40 + 10

x = -30

Therefore the number will be equal to -30.

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By applying the K-means algorithm with two centers (15 and 40) to the given data set {10, 11, 14, 17, 19, 22, 23, 25, 46, 47, 59, 61}, we can create two clusters based on the similarity of data points.

The K-means algorithm is an iterative algorithm that aims to partition a given data set into K clusters, where K is a predetermined number of clusters. In this case, we have 2 centers: 15 and 40. The algorithm starts by randomly assigning each data point to one of the centers. Then, it iteratively recalculates the center of each cluster and reassigns data points based on their proximity to the updated centers. Applying the K-means algorithm with the given centers, the algorithm would assign the data points to the clusters based on their proximity to the centers. The data points closer to the center 15 would form one cluster, and the data points closer to the center 40 would form another cluster. The final result would be two clusters that group the data points in a way that minimizes the distance between the data points within each cluster and maximizes the distance between the clusters. The specific assignments of data points to clusters would depend on the algorithm's iterations and the initial random assignments, but the end result would be two distinct clusters based on the chosen centers.

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The evaluated probabilities for the given question are 0.20 for the men who asked for promotion, 0.59 for the men who received the promotion when asked, and  0.118 for men who asked for promotion and received.under the condition that from the men interviewed  20% had asked for a promotion and 59% of the men who had asked for a promotion and  received.
Then,
P(man asked for a promotion)
= 20/100
= 0.20

P(man received promotion, given he asked for one)
= 59/100
= 0.59

P(man asked for promotion and received )
= P(man asked for a promotion) x P(man received promotion, given he asked for one)
= 0.20 x 0.59
= 0.118
Probability is considered as  the percentage of an event taking place in a specific time frame, in a given place. It is said to be a great aid in the horizons of science and mathematics.


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Answer:

The area of the model on the right is 80 sq cm

Step-by-step explanation:

Since the scale for the model on the left is 1 cm = 5 ft, and the scale for the model on the right is 1 cm = 2.5 ft, the area of the model on the right is 22, or 4, times larger than the area of the model on the left.

Multiply the area of the model on the left by 4 to find the area of the model on the right.

20 sq cm × 4 = 80 sq cm

Answer:

Liter

Step-by-step explanation:

Milliliters are used for much smaller amounts of liquid.

Answer: 8

Step-by-step explanation:

From the question, we are informed that a 2-mile walking trail has a distance marker every 1\4 mile. Hl

The number of markers that are along the trail will be calculated as:

= Length of walking trail / interval of distance marker

= 2 ÷ 1/4

= 2 × 4

= 8

There are 8 markers along the trail.

Answer:

2867

Step-by-step explanation:

Answer: 2867

Step-by-step explanation: 1647+1748−528

3395−528 or 1647+1220 2867

\(\angle 1 = 78\\\angle 2 = 102\\\angle 3 = 78\\\angle 4 = 102\\\angle 5 = 38\\\angle 6 = 142\\\angle 7 = 38\\\angle 8 = 142\\\angle 9 = 78\\\angle 10 = 102\\\angle 11 = 78\\\angle 12 = 102\\\angle 13 = 38\\\angle 14 = 142\\\angle 15 = 38\\\angle 16 = 142\)

The measure of the angles will be ∠1 = 78°, ∠2 = 102°, ∠3 = 78°, ∠4 = 102°, ∠5 = 38°, ∠6 = 142°, ∠7 = 38°, ∠8 = 142°, ∠9 = 78°, ∠10 = 102°, ∠11 = 78°, ∠12 = 102°, ∠13 = 38°, ∠14 = 142°, ∠15 = 38°, and ∠16 = 142°

The angle is the distance between the intersecting lines or surfaces. The angle is also expressed in degrees. The angle is 360 degrees for one complete spin.

The type of angles is given below.

The measure of angle 7 is 38°. Angles 7 and 8 are supplementary angles.

∠7 + ∠8 = 180°

38° + ∠8 = 180°

∠8 = 142°

The measure of angle 10 is 102°. Angles 9 and 10 are supplementary angles.

∠9 + ∠10 = 180°

102° + ∠9 = 180°

∠9 = 78°

Then the measure of the remaining angles will be

∠1 = 78°

∠2 = 102°

∠3 = 78°

∠4 = 102°

∠5 = 38°

∠6 = 142°

∠7 = 38°

∠8 = 142°

∠9 = 78°

∠10 = 102°

∠11 = 78°

∠12 = 102°

∠13 = 38°

∠14 = 142°

∠15 = 38°

∠16 = 142°

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Hi there.

The answer is g(0) = 3.

Explanation:

Given three functions with specified domains. The first and three functions both do not have x = 0 as a part of the domain. We can clear both functions.

Our main function then is currently —

\(g(x) = 3\)

You might be wondering how are we gonna find the x-value if there is no x-term?

That is to do nothing. If there is no x-term to substitute then we answer only the constant.

\(g(0) = 3\)

Step-by-step explanation:

3 supervisors = 60 employees

=> 264 supervisors = 60 * (264/3) = 5,280 employees. (C)

Answer: x=10

Step-by-step explanation:  1.Subtract the numbers

2. Divide both sides of the equation by the same term

3.Simplify (Cancel terms that are in both the numerator and denominator)

Answer:

chatGPT

Step-by-step explanation:

Let's denote the speed of each car as v, and the distance that Car A travels as d. Then we can set up two equations based on the information given:

d = v * (12/60) (since Car A reaches its destination in 12 minutes)

d + 4 = v * (18/60) (since Car B travels 4 miles farther than Car A and reaches its destination in 18 minutes)

Simplifying the equations by multiplying both sides by 60 (to convert the minutes to hours) and canceling out v, we get:

12v = 60d

18v = 60d + 240

Subtracting the first equation from the second, we get:

6v = 240

Therefore:

v = 240/6 = 40

So the cars travel at a speed of 40 miles per hour.

Step-by-step explanation:

just a question should I help you with all of them?

Answer:

£140 increased by 5% is £147.00

Answer:

it should be 147.00 , I'm so sorry if I'm wrong!

Answer:

Step-by-step explanation:

The segments formed by the parallel lines are proportional segments.

The system of equations used to find roots of the equation is y=12x³-5x and y=2x²+x+6.

Given the equation is 12x³-5x=2x²+x+6.

A set of equations containing one or more variables is called a system of equations. The variable mappings that satisfy all component equations are the solutions to systems of equations.

Firstly, separate the given equation into two parts by equating the left-hand side and right-hand side with 0, we get

12x³-5x=0

2x²+x+6=0

Now, to make a system of equations replace 0 with y as we know that system of equations contains two variables, we get

12x³-5x=y

2x²+x+6=y

Hence, the system of equations used to find the roots of the equation 12x³-5x=2x²+x+6 is y=12x³-5x and y=2x²+x+6.

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