Help please f/18 = -6

Step-by-step explanation:

Im gonna do that now, I'm not very sure how to do it, but I'll try my best

Answer:

Jill bought 16 books and Sam bought 9 books

Step-by-step explanation:

Let the number of books that Jill bought be j.

Let the number of books that Sam bought be s.

Jill bought 7 more books than Sam:

j = 7 + s

They bought 25 books altogether:

j + s = 25

Put j = 7 + s into the second equation:

7 + s + s = 25

7 + 2s = 25

2s = 25 - 7 = 18

s = 18/2 = 9 books

Therefore:

j = 7 + s = 7 + 9

s = 16 books

Jill bought 16 books and Sam bought 9 books.

Answer:

D. A pair of intersecting lines

Step-by-step explanation:

A conic section is a fancy name for a curve that you get when you slice a double cone with a plane. Imagine you have two ice cream cones stuck together at the tips, and you cut them with a knife. Depending on how you cut them, you can get different shapes. These shapes are called conic sections, and they include circles, ellipses, parabolas and hyperbolas. If you cut them right at the tip, you get a point. If you cut them slightly above the tip, you get a line. If you cut them at an angle, you get two lines that cross each other. That's what happened in your question. The plane cut the cone at an angle, so the curve is two intersecting lines. That means the correct answer is D. A pair of intersecting lines.

I hope this helps you ace your math question.

Answer:

\(\frac{49}{99}\)

Step-by-step explanation:

Having a line above one or more numbers in a decimal states that it is repeating. For example, if you have a line above the decimal 0.6, the full form would be 0.666666... going on infinitely.

Given the information above, divide all numbers by the numerator and denominator to find the decimal.

\(\frac{49}{100}\) = 0.49 (notice it does not have the line above it)

\(\frac{4}{9}\) = 0.444... (repeating)

\(\frac{7}{10}\) = 0.7

\(\frac{49}{99}\) = 0.4949494949... (repeating)

Thus, since the fraction \(\frac{49}{99}\) is a repeated 0.49 as a decimal, it is the answer.

Answer:

A. 49/100

Multiply both numerator and denominator by 10 for every number after the decimal point

0.49 × 100

1 × 100

49/100

Step-by-step explanation:

Hope it help

Brainliest please

Answer:

$19.44

Step-by-step explanation:

first you need the conversion for pounds and ounces,

16 oz = 1 lb

therefore the 6 lb package is 6 × 16 = 96 ounces

so the first ounce costs $0.44

the remaining 95 ounces cost .20 per ounce or

.20 × 95 = $19

therefore the total cost is $19 + $0.44 = $19.44

Answer:

1797631.4

Step-by-step explanation:

yeh

Answer:

The circumference of a circle is C = 2πr^2 (2nd power) Radius (r) is the distance from the center of the circle to the outside of it. To find radius divide the diameter (d) by 2. The diameter (d) of a circle is the radius (r) multiplied by 2. To find the diameter (d) you need to do C ÷ π.

For example):

Finding diameter - 76/3.14 = 24.19 (d)

Finding radius - 24.19/2 = 12.095 (r)

EDIT: (C) Means Circumference

The average rate of change for the function from x = 5 to x = 5 + h is 0.5h + 8

The average rate of change of a function is the ratio of the change in the dependent variable (y) to the change in the independent variable (x) over a certain interval. In other words, it is the average slope of the function over that interval.

The average rate of change of an equation can be determine by using the formula below:

average rate of change = (f(x₂)- f(x₁)) / [x₂- x₁]

From the given information, f(x) = f(x) = 1/2x² + 3x, x₁ = 5 , x₂ = 5+h

average rate of change =  ([1/2*(5+h)² + 3(5+h)] - [1/2*(5)² + 3(5)]) / ((5+h)-5)

                                       = [0.5*(25+10 +h²) + 15+3h)] - [27.5]) / (h)

                                       = (12.5+50 +0.5h² + 15+3h - 27.5) / (h)

                                       = (0.5h² +8h) / (h)

                                       = h(0.5h +8) / (h)

                                       = 0.5h + 8

Learn more about average rate of change on:

brainly.com/question/12363445

#SPJ1

Answer:

the answer is -352..........

Answer:

Point O represents the center of the circle

Step-by-step explanation:

HOPE IT HELPS. PLEASE MARK IT AS BRAINLIEST

Answer:

thatl be 5

Step-by-step explanation:

Answer:

1/cos^2(180-theta) - 1

Step-by-step explanation:

According to trigonometry identity

tan^2 theta + 1 = sec^2 theta

tan^2 theta = sec^2 theta - 1

hence tan^2(180-tetha)​ = sec^2 (180 -theta) - 1

tan^2(180-tetha)​ = 1/cos^2(180-theta) - 1

Hence the value of tan^2(180-tetha)​ is 1/cos^2(180-theta) - 1

Answer:

a) -3/13

b) -1/8

Step-by-step explanation:

a)  - (21 / 7) / (91 / 7) = 3/13

b) (32 / 32 ) / - (256 / 32) = -1/8​

The standard deviation of the restaurant profits in 2021 is given by $71181.

Restaurant profit for outcome 'move to A' = $ 260000

Restaurant profit for outcome 'move to B' = $ 120000

Restaurant profit for outcome 'stay in C' = $ 100000

The mean of restaurant profits = $(260000 + 120000 + 100000)/3 =$ 160000.

Standard deviation of the restaurant profits in 2021 is given by

= $ √({(260000 - 160000)² + (120000 - 160000)² + (100000 - 160000)²}/3)

= $ √(((100000)² + (40000)² + (60000)²)/3)

= $ √(15200000000/3)

= $ √5066666667

= $ 71181 (rounded to the nearest dollar)

Hence standard deviation of the restaurant profits in 2021 is given by $71181.

To know more about standard deviation here

https://brainly.com/question/12402189

#SPJ1

The question is incomplete. The complete question will be -

Answer:

3x-1

Step-by-step explanation:

Answer:

y = 3 x - 1

Step-by-step explanation:

Answer:

Since 2x represents 2 • 0, and since 6x represents 6 • 0, the answer to your math problem (on the drop down bar) is 0 and 0. Therefore the complete equation would be: 2x + 6x = 2 (0) + 6 (0).

Hope this helped!!

x and y have the values 7 and 7√2, respectively.

The sides of a right triangle with 45-degree acute angles have a unique ratio of 1:1:2.

We can use this information to determine the values of x and y because the base is specified as being 7.

Let's give the perpendicular side the value of x, and the hypotenuse the value of y.

The perpendicular side (x) and the base (7) have the same length because the acute angles are both 45 degrees.

Consequently, x = 7.

We can determine that x:y:2x using the ratio of 1:1:2.

When we enter the value of x, we may calculate y:

7:y:√2(7)

Simplifying even more

7:y:7√2

Given that the hypotenuse (y) equals 72, we can write:

y = 7√2

Thus, x and y have the values 7 and 7√2, respectively.

Learn more about right triangle click;

https://brainly.com/question/30966657

#SPJ1

Answer:

Zero

Step-by-step explanation:

Given that:

the true mean is 50 and we reject the hypothesis that μ = 50

The probability of the Type II error will be zero, given that we reject the null hypothesis. This has nothing to do with if it is true or false.

Type II error is occurs when you accept a false null hypothesis. The probability of this error is denoted by beta which relies on sample size and population variance.

The probability of rejecting is equal to one minu beta. i.e it is the researchers goal to reject a false null hypothesis.

Answer:

1.61.6 248248

Step-by-step explanation:

Answer:

30

Step-by-step explanation:

150/5 = 30

Answer: 30

Step-by-step explanation:

The final result of the integral is:

∫ (log(1 + x²) / (x + 1)²) dx = log(x + 1) - 2 (log(x + 1) / x) - 2Li(x) + C,

where Li(x) is the logarithmic integral function and C is the constant of integration.

We have,

To solve the integral ∫ (log(1 + x²) / (x + 1)²) dx, we can use the method of substitution.

Let's substitute u = x + 1, which implies du = dx. Making this substitution, the integral becomes:

∫ (log(1 + (u-1)²) / u²) du.

Expanding the numerator, we have:

∫ (log(1 + u² - 2u + 1) / u²) du

= ∫ (log(u² - 2u + 2) / u²) du.

Now, let's split the logarithm using the properties of logarithms:

∫ (log(u² - 2u + 2) - log(u²)) / u² du

= ∫ (log(u² - 2u + 2) / u²) du - ∫ (log(u²) / u²) du.

We can simplify the second integral:

∫ (log(u²) / u²) du = ∫ (2 log(u) / u²) du.

Using the power rule for integration, we can integrate both terms:

∫ (log(u² - 2u + 2) / u²) du = log(u² - 2u + 2) / u - 2 ∫ (log(u) / u³) du.

Now, let's focus on the second integral:

∫ (log(u) / u³) du.

This integral does not have a simple closed-form solution in terms of elementary functions.

It can be expressed in terms of a special function called the logarithmic integral, denoted as Li(x).

Therefore,

The final result of the integral is:

∫ (log(1 + x²) / (x + 1)²) dx = log(x + 1) - 2 (log(x + 1) / x) - 2Li(x) + C,

where Li(x) is the logarithmic integral function and C is the constant of integration.

Learn more about integrations here:

https://brainly.com/question/30217024

#SPJ1

Answer:

Solution

\(x = - 3,\: y = -3\)

Step-by-step explanation:

If the objective is to solve for the system of equations
- 7x - 5y = 36    [1]

x = 2y + 3    [2]

Then the process is as follows

the interval over which the graph of f(x) = -(x + 3) - 1 is decreasing is (-∞, +∞).

What is a function?

A unique kind of relation called a function is one in which each input has precisely one output. In other words, the function produces exactly one value for each input value. The graphic above shows a relation rather than a function because one is mapped to two different values. The relation above would turn into a function, though, if one were instead mapped to a single value. Additionally, output values can be equal to input values.

The given function is:

f(x) = -(x + 3) - 1

To find the interval over which the function is decreasing, we need to find the values of x where the function's derivative is negative.

The derivative of the function is:

f'(x) = -1

The derivative is a constant, which means the function has a constant slope of -1. Since the slope is negative, the function is decreasing over its entire domain.

Therefore, the interval over which the graph of f(x) = -(x + 3) - 1 is decreasing is (-∞, +∞).

Learn more about function, by the following link.

https://brainly.com/question/25638609

#SPJ1

Answer:

(a) 0.0686

(b) 0.9984

(c) 0.0016

Step-by-step explanation:

Given that a machine produces parts that are either defect free (90%), slightly defective (3%), or obviously defective (7%).

Let A, B, and C be the events of defect-free, slightly defective, and the defective parts produced by the machine.

So, from the given data:

P(A)=0.90, P(B)=0.03, and P(C)=0.07.

Let E be the event that the part is disregarded by the inspection machine.

As a part is incorrectly identified as defective and discarded 2% of the time that a defect free part is input.

So, \(P\left(\frac{E}{A}\right)=0.02\)

Now, from the conditional probability,

\(P\left(\frac{E}{A}\right)=\frac{P(E\cap A)}{P(A)}\)

\(\Rightarrow P(E\cap A)=P\left(\frac{E}{A}\right)\times P(A)\)

\(\Rightarrow P(E\cap A)=0.02\times 0.90=0.018\cdots(i)\)

This is the probability of disregarding the defect-free parts by inspection machine.

Similarly,

\(P\left(\frac{E}{A}\right)=0.40\)

and \(\Rightarrow P(E\cap B)=0.40\times 0.03=0.012\cdots(ii)\)

This is the probability of disregarding the partially defective parts by inspection machine.

\(P\left(\frac{E}{A}\right)=0.98\)

and \(\Rightarrow P(E\cap C)=0.98\times 0.07=0.0686\cdots(iii)\)

This is the probability of disregarding the defective parts by inspection machine.

(a) The total probability that a part is marked as defective and discarded by the automatic inspection machine

\(=P(E\cap C)\)

\(= 0.0686\) [from equation (iii)]

(b) The total probability that the parts produced get disregarded by the inspection machine,

\(P(E)=P(E\cap A)+P(E\cap B)+P(E\cap C)\)

\(\Rightarrow P(E)=0.018+0.012+0.0686\)

\(\Rightarrow P(E)=0.0986\)

So, the total probability that the part produced get shipped

\(=1-P(E)=1-0.0986=0.9014\)

The probability that the part is good (either defect free or slightly defective)

\(=\left(P(A)-P(E\cap A)\right)+\left(P(B)-P(E\cap B)\right)\)

\(=(0.9-0.018)+(0.03-0.012)\)

\(=0.9\)

So, the probability that a part is 'good' (either defect free or slightly defective) given that it makes it through the inspection machine and gets shipped

\(=\frac{\text{Probabilily that shipped part is 'good'}}{\text{Probability of total shipped parts}}\)

\(=\frac{0.9}{0.9014}\)

\(=0.9984\)

(c) The probability that the 'bad' (defective} parts get shipped

=1- the probability that the 'good' parts get shipped

=1-0.9984

=0.0016

The z-score of the number of books the newest employee sold is +1.80.

To find the z-score of the number of books the newest employee sold, you will need to know the mean and standard deviation of the number of books sold by the sales staff. You can then use the following formula to calculate the z-score:

z-score = (observation - mean) / standard deviation

Plugging in the values given in the problem, we get:

z-score = (number of books sold - mean) / standard deviation = (+1.80 - mean) / standard deviation

Solving for the number of books sold, we get:

number of books sold = mean + (z-score * standard deviation) = mean + (+1.80 * standard deviation)

number of books sold = +1.80

Learn more about z-score, here https://brainly.com/question/15016913

#SPJ4

Answer:

Approximately normal

Step-by-step explanation:

Since the population is normally distributed, the sampling distribution of the sample mean will also be normally distributed, even when the sample size is small.

The shape of the sampling distribution of the sample mean distance is approximately normal

Statistics is the discipline that concerns the collection, organization, analysis, interpretation, and presentation of data.

Given that The distances this type of ball travels in this test are normally distributed with a mean of 195 meters and a standard deviation of 5

meters.

Suppose that quality control experts regularly collect random samples of 25 distance measurements and calculate the sample mean distance in each sample

When a population is normally distributed, the sampling distribution of the sample mean x will also be normal regardless of sample size.

Since the distribution of distances is normal, the sampling distribution of the sample mean distance will also be normal.

Hence, the shape of the sampling distribution of the sample mean distance is approximately normal

To learn more on Statistics click:

https://brainly.com/question/29093686

#SPJ5

Answer:

a, and b are your answers

explanation: plug them in