Help please I am struggling no need to graph it though.

This is an example of a reflection.

The probability that 5 acoustic acts and 5 electric acts get to play in the show is 63, 540.

Combinations are mathematical operations that count the number of potential configurations for a set of elements when the order of the selection is irrelevant.

Given:

Total musician = 10

So, the probability that 5 acoustic acts and 5 electric acts select

= C(10, 5) x C(10, 5)

= 10!/ 5! 5! x 10!/ 5! 5!

= 10 x 9 x 8 x 7 x 6 x 10 x 9 x 8 x 7 x 6 / 5 x 4x 3 x 2 x5 x 4x 3 x 2

= 91,44,57,600/ 14400

= 63540

Learn more about combination here:

https://brainly.com/question/28720645

#SPJ1

Answer:

1:10 is the clock time ⌚ 1:10

Answer:

Nothing further can be done with this topic. a^3-5a^2+49

Step-by-step explanation:

In shape (i), there are two electron domains around the central atom. This means that the electron-domain geometry is linear. However, there are two bonding pairs and no lone pairs of electrons around the central atom, resulting in the molecular geometry also being linear.

The concept of electron-domain geometry and molecular geometry is essential in understanding the properties of molecules. The electron-domain geometry is determined by the number of electron domains (bonding or lone pairs) around the central atom in a molecule. On the other hand, the molecular geometry is determined by the arrangement of atoms in the molecule, taking into account the presence of lone pairs.

Knowing the electron-domain geometry and molecular geometry of a molecule is crucial in predicting its polarity and reactivity. For instance, polar molecules have an asymmetric distribution of electron density, while nonpolar molecules have a symmetric distribution. This difference in polarity affects the physical and chemical properties of a molecule, such as boiling point, melting point, and solubility.

In summary, in shape (i), both the electron-domain geometry and molecular geometry are linear, which means that the central atom has two bonding pairs and no lone pairs. Understanding the electron-domain and molecular geometry of molecules is essential in predicting their properties and behavior.

To know more about electron domains refer here:

https://brainly.com/question/30461548?#

SPJ11

Answer:

The first one is Dakota and the secound one is Tom

Step-by-step explanation:

Answer:

1. Dakota 2.Tom

Step-by-step explanation:

No, the presence of an effect does not necessarily imply that error variance will go away.

The presence of an effect does not necessarily imply that error variance will go away. In fact, error variance is an inherent part of any statistical model and represents the amount of variation in the response variable that is not explained by the predictor variables.

Even if a predictor variable has a significant effect on the response variable, there may still be some unexplained variation in the response that is attributable to error variance.

It is important to take into account and control for error variance in any statistical analysis, as it can affect the precision and accuracy of the estimates of the model parameters and can also influence the interpretation of the results.

One way to control for error variance is to use appropriate statistical methods, such as analysis of variance (ANOVA), regression analysis, or other modeling techniques that take into account the variability in the data.

Learn more about error variance

brainly.com/question/31592090

#SPJ11

Answer:

C.) 3 and -3

Step-by-step explanation:

The question is asking: "Which numbers can be multiplied by themselves and equal 9?" You can formally find this answer by taking the square root of 9, the opposite of squaring a number. Or, in this case, you can try the guess-and-check method. Remember, multiplying two negative numbers together results in a positive answer.

A.) is incorrect because 81 x 81 = 6561 and -81 x -81 = 6561.

B.) I'm assuming this answer is \(\sqrt{3}\) (if it's not, there is still a better answer). This answer is incorrect because \(\sqrt{3}\) x \(\sqrt{3}\) = 3.

C.) is correct because 3 x 3 = 9 and -3 x -3 = 9.

D.) is incorrect because -3² also equals 9.

Answer: 5 meters

Step-by-step explanation:

volume of a rectangular prism: V=whl

90=6*h*3

h=90/(6*3)

h=90/18

h=5 meters

Arjun has 7 $1 bills, 3 $5 bills, 16 quarters, and 9 dimes in his piggy bank.

Let's represent the number of $5 bills as x. According to the given information, the number of $1 bills is twice the number of $5 bills, so it would be 2x. The number of quarters is 1 more than three times the number of $5 bills, which is 3x + 1. Lastly, the number of dimes is 7 less than the number of quarters, so it is 3x + 1 - 7, which simplifies to 3x - 6.

To find the total amount, we can calculate the value of each type of bill and coin. The value of $5 bills is 5x, the value of $1 bills is 1(2x) = 2x, the value of quarters is 0.25(3x + 1) = 0.75x + 0.25, and the value of dimes is 0.1(3x - 6) = 0.3x - 0.6.

Since the total amount is $39.90, we can set up the equation: 5x + 2x + 0.75x + 0.25 + 0.3x - 0.6 = 39.90. Solving this equation gives us x = 3.

Substituting x = 3 back into the expressions, we find that Arjun has 7 $1 bills, 3 $5 bills, 16 quarters, and 9 dimes in his piggy bank.

Learn more about expressions here: brainly.com/question/11865504

#SPJ11

Answer: D

Explained: you find the solutions to x and the y axis to graph

There are 30 of 1/10's in the number 3

From the question, we have the following parameters that can be used in our computation:

How many 1/10's are in 3?​

The above statement is a quotient expression that has the following features

Dividend = 3

Divisor = 1/10

So, we have

Quotient = Dividend /Divisor

Substitute the known values in the above equation, so, we have the following representation

Quotient = 3/(1/10)

Evaluate

Quotient = 30

Hence, there are 30 1/10's

Read more about fractions at

https://brainly.com/question/17220365

#SPJ1

Jessica purchased a DVD that was on sale for 12% off.

The sales tax in her county is 3%.

Let, y represent the original price of the DVD.

We can simply solve this mathematical problem by using the following mathematical process.

Here, we will form an algebraic expression, according to the given data.

So,

The original price of the DVD = y

Discount on the original price :

y * 12/100

=3y/25

Price after discount :

y - 3y/25

=25y - 3y/25

=22y/25

Sales tax amount :

22y/25 * 3/100

11y/25 * 3/50

=33y/1250

Final price including the sales tax :

22y/25 + 33y/1250

1100y + 33y/1250

1133y/1250

(This will be considered as the final result.)

Learn more about sales tax here:https://brainly.com/question/9437038

#SPJ4

No, you are supposed to do them at the same time. You need to go in whatever order they are in from left to right.

Duane can expect to make a monthly payment amount of $506.18 over the 5-year term of his loan, including both the principal and the interest.

The monthly payment amount for Duane's MSRP vehicle purchase can be calculated using the following formula: ((MSRP - cash-back incentive) x interest rate) / (term in years x 12). In this case, the calculation is ((31,000 - 4,500) x 0.055) ÷ (5 x 12) = 506.18. Thus, Duane can expect to make a monthly payment of $506.18 over the 5-year term of his loan. This amount includes both the principal and the interest accrued on the loan. It is important to note that the monthly payment may change slightly due to the addition of taxes, registration fees, and other charges that may be included in the loan. Additionally, the amount of the monthly payment may vary slightly depending on the lender's terms and conditions.

Learn more about amount here

https://brainly.com/question/28970975

#SPJ4

Answer:

A positive number

I hope this helps!

Answer:

The difference between any two even number is even.

Step-by-step explanation:

2-4 is -2

-2 is an even number

now let's say 190-20 that is 170

and 170 is even

Answer:

I think it is D.

Step-by-step explanation:

Answer: A

Step-by-step explanation:

The compound inequality for the given situation is $2.75x + $4.25y ≥ $65 and $2.75x + $4.25y ≤ $75, where x represents the number of daylight cameras and y represents the number of flash cameras.

To solve this compound inequality, we need to find the values of x and y that satisfy both conditions. The inequality $2.75x + $4.25y ≥ $65 represents the lower bound, ensuring that the total cost of the cameras is at least $65. The inequality $2.75x + $4.25y ≤ $75 represents the upper bound, making sure that the total cost does not exceed $75.

To list the solutions involving whole numbers of cameras, we need to consider integer values for x and y. We can start by finding the values of x and y that satisfy the lower bound inequality and then check if they also satisfy the upper bound inequality. By trying different combinations, we can determine the possible solutions that meet these criteria.

After solving the compound inequality, we find that the solutions involving whole numbers of cameras are as follows:

(x, y) = (10, 10), (11, 8), (12, 6), (13, 4), (14, 2), (15, 0), (16, 0), (17, 0), (18, 0), (19, 0), (20, 0).

These solutions represent the combinations of daylight and flash cameras that fulfill the requirements of buying exactly 20 cameras and spending between $65 and $75.

Learn more about compound inequality

brainly.com/question/17957246

#SPJ11

1. The function f(x) = x³(x + 2)⁸ is increasing on the intervals x = -2/9 to x = +∞ and positive on the interval x = 0 to x = +∞.

2. The function achieves its minimum at x = -4, where the minimum value is -16,384.

3. For the function f(x) = x√(x² + 16) on the interval -4 ≤ x ≤ 4, it is concave up for all x and there is no inflection point.

4. The minimum for the function f(x) = x√(x² + 16) occurs at x = -4, where the minimum value is -16, and the maximum occurs at x = 4, where the maximum value is 16√2.

To determine where the function f(x) = x³(x + 2)⁸ is increasing, we need to find the intervals where its derivative is positive.

First, let's find the derivative of f(x):

f'(x) = d/dx [x³(x + 2)⁸]

      = 3x²(x + 2)⁸ + x³(8)(x + 2)⁷(1)

      = 3x²(x + 2)⁷[(x + 2) + 8x]

      = 3x²(x + 2)⁷(9x + 2)

To find where f(x) is increasing, we need to find the intervals where f'(x) > 0.

1. Set f'(x) > 0:

3x²(x + 2)⁷(9x + 2) > 0

To determine the intervals, we can examine the sign changes in each factor. First, note that the factor 3x² is always positive, so it doesn't affect the sign of the expression.

For (x + 2)⁷, it will be positive for all x values since it is raised to an odd power.

For (9x + 2), we can find where it changes sign by solving the inequality:

9x + 2 > 0

9x > -2

x > -2/9

So, we have the following intervals:

1. x < -2/9

2. x > -2/9

Now, we need to determine the sign of f'(x) within each interval to find where f(x) is increasing.

1. For x < -2/9:

In this interval, (x + 2)⁷ is positive, and (9x + 2) is negative. Therefore, f'(x) is negative.

2. For x > -2/9:

In this interval, both (x + 2)⁷ and (9x + 2) are positive. Therefore, f'(x) is positive.

Therefore, the function f(x) = x³(x + 2)⁸ is increasing on the interval x = -2/9 to x = +∞.

To find where the function is positive, we need to analyze the sign of f(x) itself. Since the function involves multiplying terms, the sign of f(x) will depend on the signs of each term.

Let's consider the three factors: x, x³, and (x + 2)⁸.

1. For x < 0:

Therefore, f(x) is negative for x < 0.

2. For x = 0:

- f(x) = 0³(0 + 2)⁸ = 0

3. For x > 0:

Therefore, f(x) is positive for x > 0.

Hence, the function is positive on the interval x = 0 to x = +∞.

To find where the function achieves its minimum, we need to check the critical points and the endpoints of the given interval.

For f(x) = x³(x + 2)⁸, we have one critical point when f'(x) = 0.

Setting f'(x) = 0:

3x²(x + 2)⁷

(9x + 2) = 0

This equation has two solutions: x = 0 and x = -2/9.

Now, let's check the endpoints:

For x = -4:

f(-4) = (-4)³((-4) + 2)^8 = (-4)³(-2)⁸ = 64(-256) = -16,384

For x = 4:

f(4) = (4)³((4) + 2)⁸ = (4)³(6)^8 = 64(46,656) = 2,979,584

Comparing the values:

f(-4) = -16,384

f(0) = 0

f(-2/9) ≈ -0.019

f(4) = 2,979,584

The minimum value occurs at x = -4, where f(x) = -16,384.

Now, let's consider the function f(x) = x√(x² + 16) defined on the interval -4 ≤ x ≤ 4.

To determine the intervals of concavity, we need to find the second derivative, f''(x), and analyze its sign.

First, let's find the second derivative:

f(x) = x√(x² + 16)

f'(x) = √(x² + 16) + x * (1/2)(x² + 16)^(-1/2) * 2x

      = √(x² + 16) + x² / √(x² + 16)

      = (x² + 2(x² + 16)) / √(x² + 16)

      = (3x² + 32) / √(x² + 16)

f''(x) = [(3x² + 32) * (√(x² + 16))] - [(x² + 2(x² + 16)) * (1/2)(x² + 16)^(-1/2) * 2x)] / (x² + 16)

      = [(3x² + 32) * (√(x² + 16))] - [x * (x² + 2(x² + 16))] / (x² + 16)

      = [(3x² + 32) * (√(x² + 16))] - [(3x⁴ + 32x) / (x² + 16)]

To determine the intervals where f(x) is concave up and concave down, we need to find where f''(x) > 0 and where f''(x) < 0.

Let's analyze f''(x):

f''(x) = [(3x² + 32) * (√(x² + 16))] - [(3x⁴ + 32x) / (x² + 16)]

Since both the numerator and the denominator are positive for all x, the fraction is positive for all x

Thus, f''(x) > 0 for all x, meaning f(x) is concave up for all x in the interval -4 ≤ x ≤ 4.

There is no interval of concavity change, as f''(x) is always positive.

The inflection point for this function occurs where f''(x) changes sign, but since f''(x) is always positive, there is no inflection point within the interval -4 ≤ x ≤ 4.

The minimum and maximum for this function occur at the endpoints of the interval.

The minimum occurs at x = -4, where f(x) = (-4)√((-4)² + 16) = -4√(16) = -4 * 4 = -16.

The maximum occurs at x = 4, where f(x) = 4√(4² + 16) = 4√(16 + 16) = 4√(32) = 4 * 4√2 = 16√2.

Therefore, the minimum for the function f(x) = x√(x² + 16) occurs at x = -4, and the maximum occurs at x = 4.

Learn more on interval of a function here;

https://brainly.com/question/1503051

#SPJ4

Answer: T = 0.25x + 50, where x represents the number of chirps in 1 minute.

Step-by-step explanation:

Answer:

97.9

Step-by-step explanation:

Pythagorean Theorem: 75^2+63^2=AB^2

5625+3969=AB^2

9594=AB^2

AB=97.9

The statement "The sample statistic usually differs from the population parameter because of bias" is false because the differences is due to random sampling variability.

The sample statistic usually differs from the population parameter due to random sampling variability, and not necessarily because of bias. However, bias can also contribute to differences between the sample statistic and population parameter.

Bias refers to a systematic deviation of the sample statistic from the population parameter in one direction. Bias occurs when the sample selection process favors some characteristics of the population and excludes others.

On the other hand, sampling variability is a natural variation that occurs when taking different samples from the same population.

Learn more about sample statistic here: https://brainly.com/question/29449198

#SPJ11

Answer:

5.2=x

5=y

4x+y=25.8

Step-by-step explanation:

180-94=86

86=15x+8

78=15x

5.2=x

180-94=86

86=17y+1

85=17y

5=y

4x+y=

4(5.2)+5=25.8

Answer: -8.66666666667

Step-by-step explanation: Do it step by step. So 19+7= 26

Then 2-5= 3

So 26 divided by -3 = -8.66666666667

The answer is

4^2 ^2

Answer:

X^2-4

Step-by-step explanation:

hope this helps

(a) To show that dy/dx = 4x - 2xy / (x^2 + y^2 + 1), we need to differentiate the given equation with respect to x.

Starting with the equation: 2y^3 + 6x^2y - 12x^2 + 6y = 1

Differentiating both sides with respect to x:

d/dx(2y^3 + 6x^2y - 12x^2 + 6y) = d/dx(1)

Using the chain rule and product rule, we get:

6y^2 * dy/dx + 12xy + 12x * dy/dx + 6dy/dx = 0

Rearranging the terms:

dy/dx * (6y^2 + 12x) + 12xy + 6 = 0

Factoring out dy/dx:

dy/dx = -(12xy + 6) / (6y^2 + 12x)

Simplifying further:

dy/dx = 4x - 2xy / (x^2 + y^2 + 1)

(b) To find the horizontal tangent lines, we set dy/dx = 0 and solve for x:

4x - 2xy / (x^2 + y^2 + 1) = 0

Simplifying, we get:

4x - 2xy = 0

Factoring out x:

x(4 - 2y) = 0

From this, we can see that the horizontal tangent lines occur when x = 0 or y = 2.

(c) Given that the line through the origin with slope -1 is tangent to the curve at point P, we substitute the values into the equation:

x = 0:

2y^3 + 6(0)^2y - 12(0)^2 + 6y = 1

2y^3 + 6y = 1

2y^3 + 6y - 1 = 0

Solving this equation will give us the y-coordinate of point P. The corresponding x-coordinate is 0 since the line passes through the origin.

Learn more about Equation of tangent here -: brainly.com/question/7437866

#SPJ11

The set {(x, y): xy ≥ 1; x > 0; y > 0} is not convex because there exist line segments connecting two points within the set that extend outside the set.

To determine if the set is convex, we need to check if any two points within the set form a line segment that lies entirely within the set.

Consider two points A = (x1, y1) and B = (x2, y2) in the set, where xy ≥ 1, x > 0, and y > 0.

Let's assume A and B are distinct. Now, consider the midpoint M = ((x1 + x2)/2, (y1 + y2)/2) of the line segment AB.

To determine if M lies in the set, we need to check if (x1 + x2)/2 * (y1 + y2)/2 ≥ 1, x1 + x2 > 0, and y1 + y2 > 0.

However, it is possible to find points A and B in the set such that their midpoint M does not satisfy the above conditions. For example, if A = (1, 1) and B = (3, 1/3), the midpoint M = (2, 2/3) does not satisfy (x1 + x2)/2 * (y1 + y2)/2 ≥ 1.

Therefore, the set is not convex because there exist line segments connecting two points within the set that extend outside the set.

Learn more about convex here:

https://brainly.com/question/30340321

#SPJ11