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The expression that does not belong with the other three is $-8^2$.

All four expressions involve raising a number to a power. The first three expressions involve squaring a number, while the fourth expression involves raising a number to the sixth power. Specifically:

$(-2)^6$ = 64

$8^2$ = 64

$2^6$ = 64

$-8^2$ = -64

The fourth expression, $-8^2$, is different from the other three because it involves the order of operations. The exponent 2 means that we square the number 8, which gives us a positive result of 64. However, the negative sign in front of the expression means that we take the opposite of that result, giving us -64. So, $-8^2$ is the only expression that results in a negative value, making it the odd one out.

Therefore, the expression that does not belong with the other three is $-8^2$.

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Answer:

See below:

Step-by-step explanation:

A. y = 30 + 12.50x

Let x be the number of people. It costs 12.50 per person, so y = 12.50x. Notice how the delivery fee is not per person, meaning that the delivery fee is not impacted by the amount of people buying it. Thus, y = 12.50x + 30

B. c = 0.12m + 8.00

See explanation of A:

C. 2

The slope of a line in y-intercept form ( y = mx + b ), is the number before the x. In this case, there is a 2 before the x.

D. y = 2/3x - 3

In slope intercept form, y = mx + b. Plug in the values of m ( slope ) and b( y-intercept ) and you get y = 2/3x - 3

E. y = 1/2x

The slope can be found by dividing the change of y by the change of x. Our points are (0,0) and (2,1). The change in y is 0-1, which is -1; the change in x is (0 - 2), which is -2. -1/-2 is 1/2 so the slope of the line is 1/2. Because when x = 0, y = 0 too, there is no y-intercept, so the equation of the line is y = 1/2

Answer:

The answer is B.

Step-by-step explanation:

Y = the holiday meal costs

If they’re charging a holiday meal per person the equation would be 12.50x = y

But we also have a $30 delivery fee so it would be

12.50x + 30 = y

So the equation represents

A holiday meal costing 12.50 is ordered for an x amount of people. There is also a $30 delivery fee. The meal costed y amount of dollars.

The polar coordinates of the point (3³, -) are (r, θ) = (√730, 0).

To find the polar coordinates of a point given its Cartesian coordinates (x, y), we can use the following formulas:

r = √(x² + y²)

θ = arctan(y/x)

The Cartesian coordinates (x, y) = (3³, -), we can calculate the polar coordinates as follows:

r = √((3³)² + (-)²)

  = √(27² + 1)

  = √(729 + 1)

  = √730

θ = arctan((-)/3³)

     = arctan(-/27)

     = arctan(-0)

Since the value of θ is zero, it means the point lies on the positive x-axis.

Therefore, the polar coordinates of the point (3³, -) are (r, θ) = (√730, 0).

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Answer:

a=75

b=70

c=110

d=105

e=110

f=105

Step-by-step explanation:

Answer:

Step-by-step explanation:

The 2 angles with x in them are complementary. They add to 90. This is a right triangle.

3x - 14 + 2(3x - 6) = 90       Remove the brackets.

3x - 14 + 6x - 12 = 90          Combine

9x - 26 = 90                        Add 26 to both sides.

9x = 116                               Divide by 9

9x/9 = 116/9

x = 12.89

The observed proportion of correct diagnoses in a random sample of mechanics is not necessarily the same as the MLE, as the MLE involves a more formal estimation procedure that considers the underlying probability distribution and maximizes the likelihood function based on the observed data.

The Maximum Likelihood Estimation (MLE) and the observed proportion of correct diagnoses in a random sample of mechanics are related concepts but not the same.

The MLE is a statistical method used to estimate the parameters of a probability distribution based on observed data. It seeks to find the parameter values that maximize the likelihood of observing the given data. In the case of a binomial distribution, which could be used to model the number of correct diagnoses, the parameter of interest is the probability of success (correct diagnosis) for each trial (mechanic).

In this context, if we have a random sample of 20 mechanics and observe that 15 of them made correct diagnoses, we can calculate the observed proportion of correct diagnoses as 15/20 = 0.75.

While the observed proportion can be considered an estimate of the underlying probability of success, it is not necessarily the same as the MLE. The MLE would involve maximizing the likelihood function, taking into account the specific assumptions and model chosen to represent the data. The MLE estimate may or may not coincide with the observed proportion, depending on the distributional assumptions and the specific form of the likelihood function.

In summary, the observed proportion of correct diagnoses in a random sample of mechanics is not necessarily the same as the MLE, as the MLE involves a more formal estimation procedure that considers the underlying probability distribution and maximizes the likelihood function based on the observed data.

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Answer: We would multiply the standard error by 2.845 to find the margin of error for a 99% confidence interval.

Step-by-step explanation:

To find the t-score to multiply by the standard error, we need to look at the t-distribution table with degrees of freedom (df) equal to n-2, where n is the number of observations.

In this case, n = 22, so the degrees of freedom will be df = 22 - 2 = 20.

We want a 99% confidence interval, which means that we need to find the t-score that corresponds to the middle 99% of the t-distribution. Since this is a two-tailed test, we need to find the t-score that cuts off 0.5% of the distribution in each tail.

Using a t-distribution table or a statistical software, we can find that the t-score for a 99% confidence interval with 20 degrees of freedom is approximately 2.845.

Therefore, we would multiply the standard error by 2.845 to find the margin of error for a 99% confidence interval.

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The length y in the chords is 11.05 units.

If two chords intersect within a circle, then the product of the length of the part of one of the chord is equals to the product of the length of the other chord.

Therefore, using this rule,

20 × y = 17 × 13

20y = 221

divide both sides by 20

y = 221 / 20

y = 11.05

Hence,

y = 11.05

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The weight of Dima in kilograms round to the nearest hundredth is: 58.51 kilograms.

A weight measuring unit: One pound equals 454 grams. One kilogram is roughly equivalent to 2.2 pounds.

One pound contains 16 ounces.

The word "poundus" means "weight" in Latin.

The £ symbol is derived from an ornate L in Libra.

We are given the weight of Dima as 129 pounds.

we know by conversion that:

1 pound= 0.453592 kilograms

Hence 129 pounds= 129×0.453592 kilograms

129 pounds=58.513368 kilograms.

Therefore, The weight of Dima in kilograms round to the nearest hundredth is: 58.51 kilograms.

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Answer:

Let call the angle X

Its complement will be 90-x

Its supplement will be 180-x

(180-x)+15 = 4(90-x)

180-x+15 = 360-4x

4x-x = 360-180-15

3x = 165

x = 55

Prove

The complement of 55 is 35

And the supplement of 55 is 125

Now we must see if the relation stated holds

125+15 = 4(35)

125+15 = 140 The measure of the supplement of an angle is 15 degrees less than four times the measure of the complement.

140 = 140

Therefore the solution of the problem is given by an angle of 55 degrees.

Answer:

-3,8

Step-by-step explanation:

Answer:

Aprende a leer expresiones algebraicas y comprende conceptos como variable, coeficiente u operador, entre otros.

Step-by-step explanation:

Ejemplo: la mitad de un número “x” si x= 8 x/2= 8/2= +4

If the probability of event A is 0.45 then the probability of the complement of event A is option (B) 0.55

Probability is a branch of mathematics that deals with the study of random events and their likelihood of occurrence. It is a measure of the likelihood or chance of an event occurring, expressed as a number between 0 and 1, with 0 indicating an impossible event and 1 indicating a certain event.

The complement of an event A is the probability of all the outcomes that are not in A. The probability of the complement of A is given by

P(A') = 1 - P(A)

Here, the probability of event A is given as 0.45. So, the probability of the complement of A is

P(A') = 1 - P(A) = 1 - 0.45 = 0.55

Therefore, the answer is option B) 0.55.

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Answer:

The answer is 5 cups...

Answer:

Start by evening out the sides

6x + 6 = -12

      -6 = -6

6x = 18

Divide by six (bc variable in front of x)

x = 3

There are 2 tablespoons in an ounce. So for 2 ounces, you will need 4 tablespoons, for 4 ounces 8 tablespoons, and so on.

A tablespoon is a unit of volume measurement in United States, and some other countries. It is equal to approximately 15 milliliters (0.51 fluid ounces). One tablespoon can be further divided into three teaspoons, meaning that one tablespoon is equal to three teaspoons.

In the United States, one tablespoon is equal to 0.5 ounce, which is equal to 14.3 grams. This is slightly different in the UK, where one tablespoon is equal to 0.6 ounces (which is equal to 17.7 grams). To convert tablespoons to ounces, you can use the following formula is 1 tablespoon = 0.5 ounces.

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Answer:

remember to round numbers to 1 significant figure

Step-by-step explanation:

usually in an exam when you're asked to estimate the answer to a calculation, usually you round each number to 1 sf and then work on from there.

answer this fully! i need to know what x equals

X equal minus 0.5

Even if R is anti-reflexive, R2 may not necessarily be anti-reflexive. It depends on the specific properties and composition of the relation R.

Let R be a relation that is reflexive and transitive. We want to prove that R2 = R for any relation R with these two properties.

To prove this, we need to show that for any ordered pair (a, b), (a, b) ∈ R2 if and only if (a, b) ∈ R.

First, let's consider (a, b) ∈ R2. By definition, (a, b) ∈ R2 means that there exists an element c such that (a, c) ∈ R and (c, b) ∈ R.

Since R is reflexive, we know that (a, a) ∈ R and (b, b) ∈ R.

By the transitivity of R, if (a, c) ∈ R and (c, b) ∈ R, then (a, b) ∈ R.

Therefore, (a, b) ∈ R2 implies (a, b) ∈ R.

Now, let's consider (a, b) ∈ R. Since R is reflexive, we have (a, a) ∈ R and (b, b) ∈ R.

By the definition of R2, (a, a) ∈ R2 and (b, b) ∈ R2.

Since R is transitive, if (a, a) ∈ R2 and (a, b) ∈ R2, then (a, b) ∈ R2.

Therefore, (a, b) ∈ R implies (a, b) ∈ R2.

We have shown that for any ordered pair (a, b), (a, b) ∈ R2 if and only if (a, b) ∈ R. Hence, R2 = R.

If the relation R is anti-reflexive, it is not necessarily true that R2 is anti-reflexive.

To understand why, let's consider an example. Let R be a relation defined on the set of integers such that R contains the ordered pairs (a, b) where a < b.

In this case, R is anti-reflexive because for any integer a, (a, a) is not in R.

Now, let's consider R2. R2 is the composition of R with itself. If (a, b) ∈ R and (b, c) ∈ R, then (a, c) ∈ R2.

In our example, if we take a = 1, b = 2, and c = 3, we have (1, 2) ∈ R and (2, 3) ∈ R. Therefore, (1, 3) ∈ R2.

However, (1, 1) is not in R2 because (1, 1) is not in R. Therefore, R2 is not anti-reflexive in this case.

This example demonstrates that even if R is anti-reflexive, R2 may not necessarily be anti-reflexive. It depends on the specific properties and composition of the relation R.

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Answer:

see image.

Step-by-step explanation:

For the pairs sec&csc,

tan&cot,

sin&cos

the ratios are equal IF the angles are complementary.

So like, EXAMPLE:

sin 20° = cos 70°

tan 10° = cot 80° or

sec 50° = csc 40°

^^^^these are not the answers! Just see the angles add up to 90°

So you just need to grab the angle info in the parenthesis and ADD it up and set it EQUAL TO 90°

and SOLVE for theta. See image.

Answer:

A

Step-by-step explanation:

Answer:

Step-by-step explanation:

ab + cd = e

       cd = e - ab

         d =(e - ab)/d

Answer: We can solve this problem using the standard normal distribution and standardizing the variable X.

Let Z be a standard normal variable, which is obtained by standardizing X as:

Z = (X - μ) / σ

where μ is the mean of X and σ is the standard deviation of X.

In this case, X is normal with mean μ = 3.6 and variance σ^2 = 0.01, so its standard deviation is σ = 0.1.

Then, we have:

Z = (X - 3.6) / 0.1

To find C such that P(X <= c) = 5%, we need to find the value of Z for which the cumulative distribution function (CDF) of the standard normal distribution equals 0.05. Using a standard normal table or calculator, we find that:

P(Z <= -1.645) = 0.05

Therefore:

(X - 3.6) / 0.1 = -1.645

X = -0.1645 * 0.1 + 3.6 = 3.58355

So C is approximately 3.5836.

To find C such that P(X > c) = 10%, we need to find the value of Z for which the CDF of the standard normal distribution equals 0.9. Using the same table or calculator, we find that:

P(Z > 1.28) = 0.1

Therefore:

(X - 3.6) / 0.1 = 1.28

X = 1.28 * 0.1 + 3.6 = 3.728

So C is approximately 3.728.

To find C such that P(-c < X < c) = 95%, we need to find the values of Z for which the CDF of the standard normal distribution equals 0.025 and 0.975, respectively. Using the same table or calculator, we find that:

P(Z < -1.96) = 0.025 and P(Z < 1.96) = 0.975

Therefore:

(X - 3.6) / 0.1 = -1.96 and (X - 3.6) / 0.1 = 1.96

Solving for X in each equation, we get:

X = -0.196 * 0.1 + 3.6 = 3.5804 and X = 1.96 * 0.1 + 3.6 = 3.836

So the interval (-c, c) is approximately (-0.216, 3.836).

Answer:

This is not possible, since probabilities cannot be negative. Therefore, there is no value of e that satisfies the given condition

Step-by-step explanation:

We can use the standard normal distribution to solve this problem by standardizing X to Z as follows:

Z = (X - μ) / σ = (X - 3.6) / 0.1

Then, we can use the standard normal distribution table or calculator to find the values of Z that correspond to the given probabilities.

P(X <= c) = P(Z <= (c - 3.6) / 0.1) = 0.05

Using a standard normal distribution table or calculator, we can find that the Z-score corresponding to the 5th percentile is -1.645. Therefore, we have:

(c - 3.6) / 0.1 = -1.645

Solving for c, we get:

c = 3.6 - 1.645 * 0.1 = 3.4355

So, the value of c such that P(X <= c) = 5% is approximately 3.4355.

Similarly, we can find the value of d such that P(X > d) = 10%. This is equivalent to finding the value of c such that P(X <= c) = 90%. Using the same approach as above, we have:

(d - 3.6) / 0.1 = 1.28 (the Z-score corresponding to the 90th percentile)

Solving for d, we get:

d = 3.6 + 1.28 * 0.1 = 3.728

So, the value of d such that P(X > d) = 10% is approximately 3.728.

Finally, we can find the value of e such that P(-e < X < e) = 90%. This is equivalent to finding the values of c and d such that P(X <= c) - P(X <= d) = 0.9. Using the values we found above, we have:

P(X <= c) - P(X <= d) = 0.05 - 0.1 = -0.05

This is not possible, since probabilities cannot be negative. Therefore, there is no value of e that satisfies the given condition

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Answer:

2 is positive, so this graph has a minimum and opens upward

Step-by-step explanation:

Answer:

i think it is the 4th one

Step-by-step explanation:

yo it would be cool if you would give me brainliest

Answer:

x = 3

Step-by-step explanation:

Add 7 to both the seven and the two and you get 3x = 9. Next, you divide 3 by both sides and get x = 3.

Answer:

x < 15

Step-by-step explanation:

1)  Regroup terms.

⇒ x - 50 < - 35

2) Add 50 to both sides.

x < - 35 + 50

3) Simplify - 35 + 50 to 15.

x < 15

Answer:

x < 15

Step-by-step explanation:

-50 + x < -35

+50          +50

________________

x < 15

Hope this helps :)

Answer:

9

Step-by-step explanation:

hi I'm pretty sure this is really wrong but just kinda guessing

+2 is just a positive 2 so it's just known as 2

2+1+6 = 9

Answer: 9

Step-by-step explanation:because if its 2+1+6 then u get 2 and 6 add thats 8 then your 1 and its 9.

Answer:

1 over 4

Step-by-step explanation:

Answer:

the answer is \(\frac{1}{-4\\}\)

Step-by-step explanation:

slope= \(y_{2}\)-\(y_{1}\)

           \(x_{2}\)-\(x_{1}\)   so 3-2=1 and then 3-7=-4

The combined cost of 1 pound of salmon and 1 pound of trout is $16.60

Equations are logical assertions in mathematics that have two algebraic expressions on either side of an equals (=) sign.

The expression on the left and the expression on the right are shown to be equal in reference to one another.

Let x be the cost per pound of salmon and y be the cost per pound of trout.

Melissa buys 212 pounds of salmon and 114 pounds of trout. She pays a total of $31.25

2.5 × x + 1.25× y = $31.25

2.5x + 1.25y = 31.25

The trout costs $0.20 per pound less than the salmon.

y = x - 0.20

hence

2.5x + 1.25y = 31.25

2.5y + 1.25(x - 0.20) = 31.25

2.5y + 1.25x - 0.25 = 31.25

2.5x + 1.25x = 31.25 + 0.2

x = 31.5/3.75

x = $8.4

The cost per pound of salmon be represented by x = $8.4

y = x - 0.20

y = 8.4 - 0.20

y = $8.2

The cost per pound of trout be represented by y = $8.2

The cost of a pound of salmon and trout is:

= $8.4 + $8.2

= $16.60

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