I need help with this rational expression

Answer:

389

Step-by-step explanation:

MARK BRAINLIEST PLEASE

The trigonometric function on the graph is:

f(x)= -cos(x)

So the correct option is B.

Here we can see the graph of a trigonometric function. We can see that the x-intercept is -1.

Notice that:

sin(0)= 0

cos(0) = 1

So the function can be an inversion over the x-axis of the cosine function, we coulod write this as:

f(x) = -cos(x)

That is the graphed function.

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In the quadratic equation y = a\(x^{2}\) + c ,the value of x = ± \(\sqrt \frac{y-c}{a}\)

A quadratic equation is any equation containing one term wherein the unknown is squared and no term wherein it's far raised to a higher power.

A quadratic equation is an algebraic equation of the second degree in x. The quadratic equation in its standard form is ax2 + bx + c = 0, in which a and b are the coefficients, x is the variable, and c is the constant term.

To find the value of x

Assuming \(a\neq o\)

First, subtract c from both the sides to get:

\(y-c=ax^{2}\)

then, divide both sides by \(a\) and transpose to get:

\(x^{2} =\frac{y-c}{a}\)

So, \(x\) must be a square root of \(\frac{y-c}{a}\)  and we can deduce:

\(x=\) ± \(\sqrt \frac{y-c}{a}\)

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Answer:

3.5 gallons of gas

Step-by-step explanation:

If m = miles

And the equation is m = 40g

Then: 140 = 40g

40g/40 = 140/40

g = 3.5 gallons of gas.

The car used "3.5" gallons of gas.

Patrick is vegetarian and Thelma is non vegetarian.

What are vegetarian?

The practice of not eating any meat is known as vegetarianism. It might also mean avoiding eating any leftovers from animal slaughter. There are several reasons to embrace a vegetarian diet. Due to their respect for sentient animal life, many people refrain from eating meat.

Main Body:

As Thelma ordered Turkey sandwich with extra mustard and turkey is an animal , which makes her non vegetarian so it is obvious that Patrick is a vegetarian and Thelma is non vegetarian.

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Answer:

50 i think. Just count by 5 to 10

The model predicts the population to be 671,520 in 14 years

An exponential function is a mathematical function of the form \(R^{x}\) where x is a variable and R is a constant.

Exponential functions form exponential curves with decreasing or increasing slope depending on the magnitude of the variable x.

Population, P(t) = 480,000\(e^{-0.024t}\),

when t = 14

substitute t = 14 into the equation,

Population, P(t) = 480, 000\(e^{-0-024 x 14}\) = 480, 000 x 1.399 = 671,520

In conclusion, the Population of the model after 14 years is 671,520

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Answer:

h=(x/5)-8

Step-by-step explanation:

i hope that helps

Formula for h is, h = 1/5 (x - 8).

Mathematical expression is defined as the collection of the numbers variables and functions by using operations like addition, subtraction, multiplication, and division.

Given that;

The formula is,

⇒ x = 5h + 8

Now, We can solve the formula for h as;

⇒ x = 5h + 8

Subtract 8, we get;

⇒ x - 8 = 5h + 8 - 8

⇒ x - 8 = 5h

Divide by 5;

⇒ 1/5 (x - 8) = h

⇒ h = 1/5 (x - 8)

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Answer:

y = 1/3x + 4

Step-by-step explanation:

Slope-Intercept Form: y = mx + b

Slope Formula: \(m=\frac{y_2-y_1}{x_2-x_1}\)

Step 1: Find slope m

m = (2 - 3)/(-6 - -3)

m = -1/(-6 + 3)

m = -1/-3

m = 1/3

y = 1/3x + b

Step 2: Find y-intercept b (plug in coordinates)

3 = 1/3(-3) + b

3 = -1 + b

b = 4

Step 3: Rewrite linear equation

y = 1/3x + 4

Answer:

Given:

Evaluate each value:

A)

B)

C)

D)

E)

sorry if is wrong,..........;

Answer:

Step-by-step explanation:

                   y=mx+b

As given by the question

There are given that the equation

Now,

For the value of h and k

Then,

Then,

match this equation with the given equation

Hence, the correct option is B

Explanation

We are given the following:

We are required to determine the following:

• Mean

• Median

- First, we arrange the data given in ascending (least to greatest) order. We have:

We know that the mean (average) of a data set is found by adding all numbers in the data set and then dividing by the number of values in the set.

Therefore, we have:

Hence, the mean is:

Also, we know that the median is the middle number in a sorted, ascending or descending, list of numbers.

Therefore, we have:

Hence, the median is:

The sampling method used by the restaurant manager allows for efficient data collection and a representative sample, it may introduce bias and lacks randomization.

Based on the information provided, we can identify the following statements that are true about the sampling method used by the restaurant manager to evaluate customer satisfaction with the new smoothie:

1. The manager uses systematic sampling: The manager surveys every other customer who orders the new smoothie. This systematic approach involves selecting every second customer, providing a consistent and organized sampling method.

2. The sample is representative: By surveying every other customer who orders the new smoothie, the manager ensures that the sample includes a variety of customers, reflecting the customer population as a whole.

3. The sample size may be smaller than the total customer base: Since the manager surveys every other customer, the sample size may be smaller compared to surveying every customer. This allows for efficient data collection and analysis.

4.The sampling method may introduce bias: The manager may inadvertently introduce bias by only surveying every other customer. Customers who are skipped in the survey may have different preferences or opinions, leading to a potential bias in the results.

5. The sampling method lacks randomization: Randomization is not employed in this sampling method, as the manager systematically selects customers. This could potentially introduce bias or exclude certain types of customers from the sample.

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Answer:

s = 89°

Step-by-step explanation:

Exterior angle theorem states that the measure of an exterior angle is equal to the sum of the measures of the two opposite interior angles of the triangle.

\( \therefore\)

\( \rm \implies (v + 1) \degree + (v - 28) \degree = (v + 32) \degree \\ \\ \rm \implies 2v - 27 \degree = (v + 32) \degree \\ \\ \rm \implies 2v -v = 32 \degree + 27 \degree \\ \\ \rm \implies v = 59 \degree \)

Sum of angles in a straight line is equal to 180°

\( \therefore\)

\(\rm \implies v + 32 \degree + s = 180 \degree \\ \\ \rm \implies 59 \degree + 32 \degree + s = 180 \degree \\ \\ \rm \implies s + 91 \degree = 180 \degree \\ \\ \rm \implies s = 180 \degree - 91 \degree \\ \\ \rm \implies s = 89 \degree\)

Answer:

i think its b.

Step-by-step explanation:

correct me if im wrong. and it was worth 10 points instead of 20.

Step-by-step explanation:

I hope this answer is helpful ):

Answer:

y=1-5x

Step-by-step explanation:

10x+2y=2

add subtract 10 from both sides

10x+2y=2

-10x. -10x

so now the equation should look like

2y=2-10x

then after that you have to get the Y variable alone so you have to divide everything by 2

2y÷2 = 2÷2 - 10x÷2

After you divide every term by 2 you slope intercept should be

y= 1-5x

please correct me if I am wrong

Answer:

t=63

Step-by-step explanation:

2t = 126

t=63

The value of x in the right angle placed is equal to 16

A right angle is an angle that measures 90 degrees. It is the most commonly seen angle in our day-to-day life. It can be seen in the corners of a room, the edges of boxes, the screen of a mobile phone, and so on. The sides of a square and a rectangle always form a right angle with each other. In radians, it is represented as π/2. Let us discuss more about a right angle in this article.

A right angle is an angle of 90°. When two rays intersect and form a 90˚ angle or are perpendicular to each other at the intersection, they are said to form a right angle.

In the given question, we can set an equation and find the value of x

90 = 26 + 4x

Lets solve for x

4x = 90 -26

4x = 64

x = 16

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We can conclude that the resistors from Manufacturer 1 have better mean resistance than Manufacturer 2.

What is the null hypothesis?

In statistics, the null hypothesis is a statement or assumption that there is no relationship or difference between certain populations or variables. It is typically represented by the symbol H0. The null hypothesis is used as a starting point for statistical hypothesis testing, which is a method used to determine whether the null hypothesis can be rejected or not based on sample data.

Given that the specialist has purchased 35 resistors from Manufacturer 1 with a mean of 150 ohms and a standard deviation of 2 ohms, and Manufacturer 2 offers a sample of 40 resistors with a mean of 148 ohms and a standard deviation of 2.5 ohms, we can assume that the two samples are independent and normally distributed.

To compare the means of the two samples, we can use a t-test for the means of two independent samples. The t-test will allow us to determine whether the difference in means between the two samples is statistically significant, or if it could have occurred by chance.

The null hypothesis of the t-test would be that there is no difference in means between the two samples, or that the mean of the Manufacturer 1 sample is equal to the mean of the Manufacturer 2 sample. The alternative hypothesis would be that there is a difference in means, or that the mean of the Manufacturer 1 sample is not equal to the mean of the Manufacturer 2 sample.

The t-value can be calculated using the formula:

t = (x1-x2)/sqrt((s1^2/n1) + (s2^2/n2))

where x1 and x2 are the sample means, s1 and s2 are the sample standard deviations, and n1 and n2 are the sample sizes.

Once the t-value is calculated, we can look up the t-value in a t-table to find the corresponding p-value. The p-value represents the probability of obtaining a t-value as extreme as the one calculated, assuming the null hypothesis is true.

If the p-value is less than the chosen significance level (usually 0.05), we would reject the null hypothesis and conclude that there is a statistically significant difference in means between the two samples

Hence, we can conclude that the resistors from Manufacturer 1 have better mean resistance than Manufacturer 2.

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The total cost of the computer is 719.95 if Originally the price is 849 the store offers a 20% discount and a 6% sales tax

What is Algebraic expression ?

Algebraic expression can be defined as combination of variables and constants.

To find the purchase total, multiply the price by the percent paid and add the percent of tax.

The store offers a 20% discount

This means you pay 80% of the price. So the discounted price is 0.80(849) = 679.2.

Find the tax to be paid by multiplying 0.06(679.2) = 40.752.

Add the tax for the final total.

679.2 + 40.752 = 719.95

Hence, The total cost of the computer is 719.95 if Originally the price is 849 the store offers a 20% discount and a 6% sales tax

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Answer:

62.1371192237

Step-by-step explanation:

Just remeber that one kilometer per hour is equal to 0.62 mph and that one mile per hour is equal to 1.60934 kilometers per hour.

The speed limit of a car on the highway is 62.1 miles/hour.

Given that;

While on a road trip to Canada, you rent a car and discover that the speed limit on the highway is 100km/hr.

We have to find the equivalent speed in miles/hour.

What is relation between miles and hour?

Relation between miles and hour is;

1 kilometer = 0.621 miles.

The speed limit of the car on the highway = 100 km/h

Since, 1 kilometer = 0.621 miles.

Hence,

100 kilometer/hour = 100 x 0.621 miles/hour

                             = 62.1 miles/ hour

So, The speed limit of a car on the highway is 62.1 miles/hour.

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Answer:

24

Step-by-step explanation:

Answer:

n=10

sum=820

mean= SUM/N

= 820/10

=82

Answer:

The logistic equation is a differential equation that describes the growth of a population over time. The solution of this equation can be found using separation of variables or other methods of solving differential equations. The general solution for the logistic equation is given by:

y(t) = y_0 * e^(rt) / (1 + (y_0 - 1)e^(rt))

Where y_0 is the initial population size, r is the growth rate, and t is time.

For the specific case given in the question, we have the initial conditions y1(0)=14 and y2(0)=-3. We can use these to find the specific solution for each case.

1(0)=14 => y1(t) = 14e^(rt) / (1 + (14 - 1)e^(rt))

2(0)=−3 => y2(t) = -3e^(rt) / (1 + (-3 - 1)e^(rt))

It is important to note that we can not find the exact value of r without additional information.

Answer:

y(t) = 1 / (1 + (-4e^(-t))

Step-by-step explanation:

The logistic equation is a nonlinear differential equation that describes how a population grows. The solution for the logistic equation is given by y(t) = 1 / (1 + (Ce^(-t)) where C is the constant of integration, which can be determined by the initial conditions.

For the first initial condition, 1(0)=14, we can substitute the initial condition into the solution to get:

y(0) = 1 / (1 + (Ce^(0)) = 1 / (1 + C) = 14

Solving for C, we get C = 13.

So the solution for the first initial condition is:

y(t) = 1 / (1 + (13e^(-t))

For the second initial condition, 2(0)=-3, we can substitute the initial condition into the solution to get:

y(0) = 1 / (1 + (Ce^(0)) = 1 / (1 + C) = -3

Solving for C, we get C = -4.

So the solution for the second initial condition is:

y(t) = 1 / (1 + (-4e^(-t))

Answer: -1 and -9

Step-by-step explanation:

(- 1) + (-9) = -10

(-1) * (-9) = +9

hope this helps!

Answer:

115 feet below surface

Step-by-step explanation:

The starting depth of the submarine is 75 feet. Multiply 8ft.*5 to then get 40ft. Add 75ft to 40ft to get 115 ft.

Pi (π) is a mathematical constant that represents the ratio of the circumference of a circle to its diameter.

Two or more expressions with an Equal sign is called as Equation.

The equation for the best-fit line does not provide any direct information about the value of pi. The best-fit line is used to model the relationship between two variables, and it can be used to make predictions or estimates based on that relationship.

Pi (π) is a mathematical constant that represents the ratio of the circumference of a circle to its diameter. Its value is approximately 3.14159. Pi is a fundamental constant in mathematics and appears in many different mathematical equations and formulas.

Hence, Pi (π) is a mathematical constant that represents the ratio of the circumference of a circle to its diameter.

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