Can some help?! Please and thank you

Answer:

5x^3+15x^2-35x

Step-by-step explanation:

Firstly, you want to combine the "x"s in the (5x*x^2) and the (5x*3x). Once you have that (you will get 5x^3 and 15x^2), you can move onto the last set of parenthesis. We can get 35x from here. Finally, the last step is to add the correct signs. Our final answer will then be 5x^3+15x^2-35x. I hope this helped and please don't hesitate to reach out with more questions!

We can conclude that the probability is more than 50% that the project would need more than the given deadline to complete.

more than 50%

To solve the problem, we can use the standardized normal distribution. The mean of the project finish time is 25 weeks, and the standard deviation is the square root of the variance, which is 3 weeks. We can standardize the deadline by subtracting the mean and dividing by the standard deviation:

z = (11 - 25) / 3 = -4

The probability that the project would need more than 11 weeks to complete is the same as the probability of getting a z-score less than -4, which is very low. We can use a standard normal distribution table or calculator to find this probability, which is approximately 0.00003 or 0.003%. Therefore, we can conclude that the probability is more than 50% that the project would need more than the given deadline to complete.

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Answer:

x>3

Step-by-step explanation:

5-4x<-7

-4x<-7-5

-4x<-12

x>3

In the special case of two degrees of freedom, the chi-squared distribution does not coincide with the exponential distribution. The chi-squared distribution is a continuous probability distribution that arises in statistics and is used in hypothesis testing and confidence interval construction. It is defined by its degrees of freedom parameter, which determines its shape.

On the other hand, the exponential distribution is also a continuous probability distribution commonly used to model the time between events in a Poisson process. It is characterized by a single parameter, the rate parameter, which determines the distribution's shape.

While both distributions are continuous and frequently used in statistical analysis, they have distinct properties and do not coincide, even in the case of two degrees of freedom. The chi-squared distribution is skewed to the right and can take on non-negative values, while the exponential distribution is skewed to the right and only takes on positive values.

The chi-squared distribution is typically used in contexts such as goodness-of-fit tests, while the exponential distribution is used to model waiting times or durations until an event occurs. It is important to understand the specific characteristics and applications of each distribution to appropriately utilize them in statistical analyses.

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Answer:

4 days at least

Step-by-step explanation:

Answer:

see below

Step-by-step explanation:

The first step is to make a chart

                 sophomores               juniors

male              6

Female                                           10

total                 15                           18

We can fill in the missing pieces

There are 9 female sophomores  and 8 male juniors

                 sophomores               juniors

male              6                                 8

Female            9                               10

total                 15                           18

a.  P(junior or male) = number of juniors or males)/ total

The total = 15+18 = 33

The number of juniors = 18 and the sophomore males is 6 (18+6) =24

Do not double count the junior males

P(junior or male) = 24/33 = 8/11

b.  P(sophomore or female) = number of sophomores or females)/ total

The total = 15+18 = 33

The number of sophomores = 15 and the junior females is 10 (15+10) =25

Do not double count the sophomore females

P(sophomore or female)  = 25/33

c.  P(junior and male) = number of juniors and male)/ total

The total = 15+18 = 33

The number of juniors who are male = 8

P(junior and male) = 8/33

d.  P(sophomore and female) = number of sophomores and female)/ total

The total = 15+18 = 33

The number of sophomore females = 9

P(sophomore and female)  = 9/33=3/11

Avery can explain to her school principal that 85% of juniors think there is a lot of homework because several indicators have increased.

An indicator is a datum that is taken as a reference to analyze the evolution or change of a fact over time. In this case, the indicators would be:

According to the information, it can be inferred that 85% of Junior students consider that there is an increase in homework because there were the following changes compared to last year:

From the foregoing, it can be inferred that the number of homework has increased in Junior students and that is why now 85% of them consider that homework has increased.

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The measure of DE is 8x. This was found by using the distance formula to calculate the length of the side.

Measurements are the process of comparing an unknown quantity to a known reference value in order to estimate the size, quantity, distance, weight, or other characteristics of that unknown quantity. Measurements are used in science and engineering to quantify the properties of objects, or to compare objects to each other. Measurements are also used in everyday life to help make decisions and assess the impact of changes.

To find the measure of DE, we must first calculate the length of the side. We can do this by using the distance formula. The distance formula is used to calculate the length of a line between two points in a plane. The formula is given as d = √(x2 - x1)2 + (y2 - y1)2.

For the side DE, we can use the coordinates (2x+7, 4(x-3)). The first point is (2x+7, 4(x-3)) and the second point is (2x+7, 4(x+3)). We can substitute these points into the distance formula to calculate the length of DE.

The formula becomes d = √[(2x+7 - 2x+7)2 + (4(x+3) - 4(x-3))2]

Simplifying, we get d = √[(0)2 + (8x)2]

d = √[64x2]
d = 8x

Therefore, the measure of DE is 8x.

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Answer:

B: 8

Step-by-step explanation:

we are given two numbers which we can use to help solve this problem

A: the number of hours the dishwasher is being used

B: how long it takes the dishwasher to do each load

using this info we can find how many loads were washed in 10 hours by dividing the time it takes for each load by how many hours were spent.

10 / 1.25 = 8

Answer:

The sum of all four angles of a quadrilateral is 360 degrees.

Let's denote the two unknown angles as 4x and 9x, where x is a constant.

We can set up an equation using the given information:

291 + 17 + 4x + 9x = 360

Simplifying the equation:

308 + 13x = 360

13x = 52

x = 4

So, the two unknown angles are:

4x = 16 degrees

9x = 36 degrees

Therefore, the measures of the two angles in a ratio of 4:9 are 16° and 36°.

Looking at the graph, the correct answer is in option B; An employee would earn $730 if they work for 27 hours on a project.

A scatterplot is a type of graphical representation that displays the relationship between two numerical variables. It is particularly useful for visualizing the correlation or pattern between two sets of data points.

We can see that we can trace the statement that is correct when we try to match each of the points on the graph. When we do that, we can see that 27 hours can be matched with $730 earnings.

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Answer: 0.02

Step-by-step explanation: Divide 2 by 100

Answer:

0.02

Note:

Please mark as Brainliest! <3

Answer:

\(x=77\)

Step-by-step explanation:

103 -x + 2x = 180

Answer:

C and D are correct

Step-by-step explanation:

Order of operations is parenthesis exponents multiplication division addition and then subtraction

A density graph of temperatures shows the frequency of different temperature values.

A density graph for all of the possible temperatures from 60 degrees to 260 degrees can be used to find the probability density function (PDF) of a continuous random variable that represents temperature within that range. The PDF describes the relative likelihood of observing different temperature values within the range, taking into account the continuous nature of temperature.

The density graph shows the distribution of temperature values, with the height of the graph at a given temperature indicating the relative probability of observing that temperature. The area under the density graph within a given range of temperatures represents the probability of observing a temperature within that range.

Therefore, a density graph can be used to find the probabilities of observing different temperatures within the given range and to analyze the distribution of temperatures within that range.

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The maximum length of the beluga whale is 17 feet.

How to calculate percentage?

A percentage is a ratio or fraction where the full value is always 100.It is a certain number or part in every hundred. It is a fraction with the denominator 100, and the symbol for it is "%."We must divide the value by the entire value to find the percentage, and then multiply the resulting number by 100.

Percentage formula = (Value/Total value) × 100

It is given that 105.88% of the maximum length of the beluga whale is 18 feet.

Let the maximum length of the beluga whale be x

105.88% of x = 18 feet

(105.88 /100) × x = 18

(10588/10000) × x = 18

x = 18 ÷ \(\frac{10588}{10000}\)

x = 18 × \(\frac{10000}{10588}\) = \(\frac{180000}{10588}\) = 17.00003 = 17 feet

Therefore, the maximum length of the beluga whale is 17 feet.

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A quarterback throws an incomplete pass. The height of the football at time t is modeled by the equation h(t) = –16t² + 40t + 7. Rounded to the nearest tenth, the solutions to the equation when h(t) = 0 feet are –0.2 s and 2.7 s.

the solution to be eliminated is -0.2s this is because time do not have negative values

ax² + bx + c = 0 is a quadratic equation, which is a second-order polynomial equation in a single variable. a.

It has at least one solution because it is a second-order polynomial equation, which is guaranteed by the algebraic fundamental theorem. The answer could be real or complex.

Considering the given function, the answer is both real one is negative the other is positive.

The solution in this case represents time, and time of negative value do not apply in real life

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The z-value is -2.26. Therefore, the correct option is (C).

Given that z is a standard normal random variable, the value of z if the area to the left of z is 0.0119 is -2.26. So, the correct answer is (C).

The area to the right of z is (1-0.0119) = 0.9881.

Using a standard normal distribution table or calculator, find the z value for an area of 0.9881.

We get z=2.26.

Now, we know that z value is negative because we have to go left from the center of the normal distribution curve.

The area to the left of z is 0.0119. The area to the right of z is (1-0.0119) = 0.9881.

Using a standard normal distribution table or calculator, find the z value for an area of 0.9881. We get z=2.26.

Now, we know that z value is negative because we have to go left from the center of the normal distribution curve.

Therefore, the z-value is -2.26. Therefore, the correct is (C).

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The branch of statistics that uses sample statistics to estimate a population parameter or test a hypothesis about such a parameter is best referred to as inferential statistics.

Therefore, the branch of statistics that uses sample statistics to estimate a population parameter or test a hypothesis about such a parameter is best referred to as inferential statistics.

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Function notation is a way of representing mathematical functions using symbols. In function notation, a function is represented by a single letter, such as "f" or "g," followed by a set of input values in parentheses. For example, f(x) represents a function of x, where the value of f for a given x can be found by evaluating the function.

Function notation is commonly used in mathematics to simplify expressions and make it easier to understand mathematical relationships between variables.

The following function notations represent the following given conditions:

a) N(5) represents the population of Miami 5 years after 1990.

b) N(9) represents the population of Miami 9 years after 1990, or in the year 1999.

c) N(1997) + 45,000 represents the population of Miami which is 45,000 more than the population in 1997.

d) N(1990 + k) represents the population of Miami k years after 1990.

e) N(1998) - N(1995) represents the change in the population of Miami from 1995 to 1998.

f) N(11) - N(7) represents the change in the population of Miami from 7 years after 1990 to 11 years after 1990.

g) N(2008) = 431,200 represents the population of Miami in 2008 as being 431,200.

h) The solution of the equation N(t) = 412,000 represents the year (or years) when the population of Miami was 412,000.

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Answer:

i think the answer would be Brayden

Step-by-step explanation:

Answer:

I hope this helps you with your question

Answer:

19

Step-by-step explanation:

A' represents everything out A

B' represents everything out B

C' represents everything out C

So only the outside is left hope this helps

There are 18 deluxe rooms in the hotel.

To find the number of deluxe rooms in the hotel, we need to calculate the percentage of rooms that are deluxe.

The percentage of single-bed rooms is 55%, and the percentage of double-bedrooms is 30%. Therefore, the percentage of deluxe rooms can be calculated as:

Percentage of deluxe rooms = 100% - (Percentage of single-bed rooms + Percentage of double-bedrooms)

= 100% - (55% + 30%)

= 100% - 85%

= 15%

So, 15% of the total rooms in the hotel are deluxe rooms.

To determine the number of deluxe rooms, we can multiply the total number of rooms by the percentage of deluxe rooms:

Number of deluxe rooms = 15% of 120 rooms

= (15/100) * 120

= 0.15 * 120

= 18

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Answer:

the true statement is D. sin A = cos C

it's because,

statements A and B do not match and as for statement C, angle B is not included in trigonometric ratios

Answer: (2, 4)

Step-by-step explanation:

This is in y=mx+b form

b is the y intercept so the point will be (0, b) for both equations

the m represents the slope to find the x intercept substitute y as 0

Plotting the graph the lines would meet at points (2, 4).

Answer:

Step-by-step explanation:

Answer:

\(\huge\boxed{\sf 3(n + 5) \leq 100}\)

Step-by-step explanation:

So, the inequality will be:

3(n + 5) ≤ 100

\(\rule[225]{225}{2}\)

Hope this helped!

The minimum distance between the origin and the plane 3x + y + 2z = 28, using the Lagrange Multipliers is 8.73 units.

In the question, we are asked to use Lagrange multipliers to find the minimum distance between the origin and the plans 3x + y + 2z = 28.

Lagrange multipliers state that if we want to minimize a function, f(x, y, z), subject to a constraint g(x, y, z) = constant, then ∇f = λ∇g.

We want to minimize the distance, and the distance formula says that the distance from the origin to a point (x, y, z), is given as:

D = √(x² + y² + z²), which can also be shown as:

D² = x² + y² + z².

The gradient of this function is: (2x + 2y + 2z), which needs to be equal to the gradient of the constraint equation multiplied by the constant, λ, that is, λ(3, 1, 2), which gives:

2x = 3λ, or, x = (3/2)λ,

2y = λ, or, y = λ/2, and,

2z = 2λ, or, z = λ.

Substituting these in the equation of the plane, 3x + y + 2z = 28, we get:

3(3/2)λ + λ/2 + λ = 28,

or, 6λ = 28,

or, λ = 28/6 = 14/3.

Thus, we get:

x = (3/2)λ = 7,

y = λ/2 = 7/3, and,

z = λ = 14/3.

Substituting these in the distance formula, we get:

D = √(7² + (7/3)² + (14/3)²) = √(49 + 49/9 + 196/9) = √(686/9) = 8.73.

Thus, the minimum distance between the origin and the plane 3x + y + 2z = 28, using the Lagrange Multipliers is 8.73 units.

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Answer:

The second coupon will save more money.

Step-by-step explanation:

Below are the calculations:

First, find the 20% of the cost $115 and then compare with other value $25.

The 20% of the $115 = 20% x 115 = $23

Since the person has two coupons, one coupon benefits by $23 and second coupon benefit by $25. Therefore, second coupon will save more money.