Help pls get 35pts plsss

Thus, 420 fish were ultimately caught, with 6x standing in for "6 times as much."

x + y = 420; y = 6x

Thus, 420 fish were ultimately caught, with 6x standing in for "6 times as much."

The smallest and largest fish range in size from 1 cm to 18 m. 18 m then equals 18 x 100 or 1800 cm. ∴ The length of large fish exceeds that of little fish by 1800 times.

The number of parrotfish Carlos purchased is represented by the variable y, whereas the number of angelfish Carlos purchased is represented by the variable x.

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Second highest integer will have value of \(n+2\).

\(

n+(n+1)+(n+2)+(n+3)=126 \\

4n+6=126 \\

n=30

\)

So the value of the second highest of the consecutive integers is 32.

Hope this helps.

Answer:

32

Step-by-step explanation:

First, we must create an equation. If the integers are consecutive, it means that one comes right after the other (the difference is one). Here is the equation that will allow us to solve this problem:   (x) + (x + 1) + (x + 2) + (x + 3) = 126. Note that, although I have added parenthesis, these are just to separate each of the four integers we have not solved for yet. In your work, they will not make a difference in the answer!

Second, let's solve, beginning by combining like terms! There are four x's and 6 "regular" numbers (numbers without coefficients, in this case found by taking 1+2+3). This can be written out like so: 4x + 6 = 126.

Next, we must subtract the 6 from the left side and the right side in order to keep them equal. This gives us: 4x = 120.

Finally, let's divide both sides by four to find x!!! 120/4 =  30, meaning that: x = 30! For the last step, we must add 1, 2, and 3 to 30 to find all of the numbers. 30 + 1 = 31; 30 + 2 = 32, and 30 + 3 = 33! This gives us all four of our numbers: 30, 31, 32, and 33. The second highest of these is 32, which is our answer!

If you have any additional questions, please just comment below my answer and I'd be happy to help!

Answer:

x = 2, y = - 1

Step-by-step explanation:

Given the 2 equations

3x + 4y = 2 → (1)

x = 5y + 7 → (2)

Substitute x = 5y + 7 into (1)

3(5y + 7) + 4y = 2 ← distribute and simplify left side

15y + 21 + 4y = 2

19y + 21 = 2 ( subtract 21 from both sides )

19y = - 19 ( divide both sides by 19 )

y = - 1

Substitute y = - 1 into (2) for corresponding value of x

x = 5(- 1) + 7 = - 5 + 7 = 2

As a check

Substitute x = 2, y = - 1 into the left side of (1)

3(2) + 4(- 1) = 6 - 4 = 2 = right side

Solution is x = 2, y = - 1

First pick: Random apple

2 out of the 5 apples are red. Therefore, the probability of choosing a red apple is:

Second pick: Red apple removed

We're left with 4 apples, one of which is red.

Therefore, the probability of choosing the red apple from this bowl is:

To get the probability of the two events happening right next to each other, we mulitply both probabilities:

Meaning that the probability that both apples chosen will be red is 1/10, or 10%

A simple random sample of steel canisters has been taken, and you have the mean wall thickness and standard deviation in millimeters. To determine if it is appropriate to perform a hypothesis test about the population mean, consider the following factors:

1. Randomness: The sample has been taken using a simple random sampling method, which helps ensure that each canister has an equal chance of being selected. This is a crucial factor for conducting a hypothesis test.

2. Sample size: Although the sample size is not mentioned, a large sample size (usually 30 or more) is preferred for hypothesis testing. The larger the sample size, the more accurate the results of the test will be in representing the entire population.

3. Normality: Hypothesis tests about the population mean often rely on the assumption that the data follows a normal distribution. With a large sample size, the Central Limit Theorem suggests that the sampling distribution of the mean will be approximately normally distributed, even if the population itself is not.

4. Known standard deviation: You have the standard deviation for the sample, which is necessary for conducting the hypothesis test.

Given the information provided, it seems appropriate to perform a hypothesis test about the population mean for the wall thickness of steel canisters, provided the sample size is large enough.

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i put that by accident

Using a graphing calculator, the regression equation which models the data is y = 0.075x + 6.319

Using the data given in the table, the regression equation which models the data could be written in slope intercept format as :

Where b = slope and c = intercept

Using a graphing calculator, the regression equation is y = 0.075x + 6.319

Therefore, the regression equation which relates the data is y = 0.075x + 6.319

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A and B are 2 x 2 with columns a1, a2, and b1, b2, respectively. AB = [a1 b1 a2 b2].

Each column of AB is a linear combination of the columns of B using weights from the corresponding column of A.So, we have:AB=⎡⎣⎢⎢a1a2⎤⎦⎥⎥[b1b2]=[a1b1+a2b2a1b1+a2b2]The order of AB is 2 × 2.Therefore, the blank will be filled by "2 × 2". Hence, the answer is 2 × 2.

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Answer:

5 days= 3 pages

x day=30 pages

30x 5 /3

150/3

50 days

Step-by-step explanation:

Answer:

Step-by-step explanation:

The above relations are true.

__

The relation 1.2 > √1.5 > 1.3 is false without even considering the value of √1.5, because 1.2 is not greater than 1.3.

You have to know the meanings of the symbols:

  A < B  ⇔  A is less than B

  C > D  ⇔  C is greater than D

Answer:

Step-by-step explanation:

a)7x + 2 = -19  {subtract 2 from both sides}

7x + 2 -  2 = -19 - 2

            7x = -21   {Divide both sides by 7}

         7x/7 = -21/7

             x = -3

b) 3x - 1/3 = 5

3x - 1/3 +1/3 = 5 + 1/3  {Add 1/3 to both sides}

               3x =15/3 + 1/3

               3x =16/3

             3x/3 = 16/3*3 {Divide both sides by 3}

                 x =16/9

                 x =1 7/9

c) 5x - 4  = 21

5x -4 + 4 = 21 +4 {Add 4 to both sides}

          5x = 25

       5x/5 = 25/5    {Divide both sides by 5}

            x = 5

d) -7x  = 21 {Divide both sides by -7}

-7x/-7 = 21/-7

        x = -3

e)   18 - 7x = -3

18 - 7x - 18 = -3 - 18   {Subtract 18 from both sides}

          -7x = -21   {Divide both sides by -7}

      -7x/-7 = -21/-7

              x = 3

f)     3(x+4) = 21   {use distributive property}

   3x + 3*4 = 21

    3x  + 12 = 21

3x + 12 - 12 = 21 - 12       {Subtract 12 from both sides}

              3x = 9   {Divide both sides by 3}

           3x/3 = 9/3

                 x = 3

g)     3x - 9 = 5x - 3  {add 9 to both sides}

 3x - 9 + 9 = 5x - 3 + 9

             3x = 5x + 6

       3x - 5x = 5x + 6 - 5x     { subtract 5x form both sides}

             -2x = 6  {Divide both sides by -2}

         -2x/-2 = 6/-2

                 x = -3

h) 4x + 6 - 7x + 9 = 18   {Add the like terms}

           -3x  + 15 = 18  {Subtract 15 from both sides}

      -3x + 15 -15 = 18 - 15

                    -3x = 3   {Divide both sides by -3}

               -3x/-3 = 3/-3

                      x = -1

\(i) \frac{-4}{9}x = -36\)

Multiply both sides by 9

\(9*\frac{-4}{9}x =9*-36\)

 -4x = -324     {Divide both sides by -4}

-4x/-4 = -324/-4

       x = -81

\(j)\frac{-7}{8}x - 6 = 8\)   {Add 6 to both sides}

\(\frac{-7}{8}x-6+6=8+6\\\\\frac{-7}{8}x=14\\\)    {Multiply both sides by 8}

\(\frac{-7}{8}x*8=14*8\\\\-7x=14*8\\\)       {Divide both sides by -7}

\(\frac{-7}{-7}x=\frac{14*8}{-7}\)

x =-2*8

x = -16

Answer:

C: (2x-10)

Step-by-step explanation:

(4x - 3) - (2x + 7)

In -(2x+7), think of it as -1(2x+7) which is equal to:

-1*2x + -1*7 =

-2x - 7

Now we add this to 4x-3

4x - 3 - 2x - 7

Combining like terms gives us:

2x - 10

the final equivalent expression is 2(a - 1) / 3a2 for the expression 3a2-6a/3a3 can be simplified by factoring out the greatest common factor in the numerator and denominator.

The greatest common factor of the numerator is 3a, which can be factored out as follows:

3a(2a - 2) / 3a(3a2)

The 3a in the numerator and denominator cancel out, leaving:

2a - 2 / 3a2

Therefore, the expression is equivalent to (2a - 2) / (3a2).

This expression can be further simplified by factoring out a 2 in the numerator:

2(a - 1) / 3a2

So, the final equivalent expression is 2(a - 1) / 3a2.

In summary, the expression 3a2-6a/3a3 simplifies to 2(a - 1) / 3a2, which is the same as 2a - 2 / 3a2 after factoring out the greatest common factor. It is important to note that we assume the denominator does not equal zero because division by zero is undefined and not a valid mathematical operation.

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B. A correlation-coefficient.

To determine the predictive validity of a metric scale, which measures a construct of interest, you would need to assess the relationship between the scores on the metric scale and a criterion measure that reflects the same construct. This can be done by calculating a correlation-coefficient between the scores on the metric scale and the scores on the criterion measure. The correlation-coefficient indicates the strength and direction of the relationship between the two measures, with values ranging from -1 to +1. A higher correlation-coefficient suggests a stronger relationship between the metric scale and the criterion measure, indicating higher predictive validity.

Cronbach's alpha is a measure of internal consistency reliability, which assesses the extent to which the items on a scale are consistent with each other. Fishers r-to-z test is a statistical test used to compare the magnitude of two correlation-coefficients, and is not directly related to determining the predictive validity of a metric scale. Therefore, the best answer is B. A correlation-coefficient.

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The best instrument to determine the predictive validity of a metric scale (a set of questions) would be a correlation-coefficient. This is because a correlation-coefficient measures the strength and direction of the relationship between two variables, in this case, the metric scale and the outcome it is predicting.

Predictive validity refers to the extent to which a measure accurately predicts an outcome. A correlation-coefficient would be the best instrument to determine the predictive validity of a metric scale as it measures the degree to which two variables are related, providing information on the strength and direction of the relationship between the metric scale and the predicted outcome. The higher the correlation-coefficient, the stronger the relationship, indicating higher predictive validity. Cronbach's alpha measures internal consistency, while Fisher's r-to-z test is used to compare correlation coefficients, making them less suitable for determining predictive validity.

Therefore, option B, a correlation-coefficient, is the best instrument to determine the predictive validity of a metric scale.

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Answer:

The angle of that is 90°

Here, we use the property of multiplication of exponential expression which states when we multiply two exponential expressions with the same base, we keep the base and add the exponents.

Therefore,

\(x^(3+5) = x^8\)

Now,

\(x^(3+5) = x^8\)

is of the form:

\(x^b = x^p\)

When we have two equal expressions on either side of the equation, the power of the base remains the same. Therefore,

p = 8

There we have it. The value of p is 8. The full solution is shown below:

\(x^3 × x^5 \\= x^px^8\\ = x^p\)

We can see that the base of the exponential expression on either side is equal.

Therefore, the power of the base must be equal as well. In other words

,p = 8.

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Answer: Length = 42ft Width = 21ft

Step-by-step explanation:

Let "w" be width

W = 21ft

w x 2 = L

L = 42ft

Perimeter:

42+42+21+21

=126

Answer:

option 4

Step-by-step explanation:

its 4 my dude .......

The mode is best to use as a measure of center when the data consists of discrete proportions.

The mode is best to use as a measure of center when the data consists of discrete proportions, such as if the data is categorical in nature.

If a set of numbers has a standard deviation of zero, it means that all of the numbers are the same. This can be interpreted from a class grade standpoint as all of the students in the class got the same score.

The median is less affected by skewed data than the mean because the median is found by sorting the data points and choosing approximately the middle value, whereas the mean is found by adding all of the data together and dividing by the number of data points.

Most data is likely to be skewed, as there are usually outliers that cause the bulk of the data to be located toward one end of the distribution. This means that the mean and median values will be pulled away from each other, resulting in a skewed distribution.

Hence, the mode is best to use as a measure of center when the data consists of discrete proportions.

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The moment of inertia and bond length of the molecule are 7.8 × 10-47 kg m2 and 1.276 A respectively.

To calculate the moment of inertia (I) and bond length (r) of the ^35Cl^19F molecule, we'll first need to find the reduced mass (μ) and then use the formula relating the spacing of lines (B) to I.

1. Calculate the reduced mass (μ):
μ = (m(Cl) * m(F)) / (m(Cl) + m(F))
μ = (34.9688 u * 18.9984 u) / (34.9688 u + 18.9984 u)

2. Convert the reduced mass to kg (1 u = 1.66054 x 10^-27 kg):
μ = μ * 1.66054 x 10^-27 kg/u

3. Use the formula B = h / (8π²Ic) to find I, where B is the spacing of lines, h is the Planck's constant (6.626 x 10^-34 Js), and c is the speed of light (2.998 x 10^10 cm/s):
I = h / (8π²Bc)

4. Calculate the bond length (r) using the formula I = μr²:
r = √(I / μ)

By following these steps, you can find the moment of inertia (I) and bond length (r) of the ^35Cl^19F molecule.

Given that the spacing of lines in the microwave spectrum of 35Cl19F is constant at 1.033 cm-1, the moment of inertia and bond length of the molecule where m(35Cl)=34.9688 u and m(19F)=18.9984 u are as follows:

Moment of Inertia: The moment of inertia of the molecule, I is given by the formula below:$$I = \frac{h}{8\pi ^2cB}

where h is Planck's constant, c is the speed of light, and B is the rotational constant.

The rotational constant is given by the equation below: B

= \frac{h}{8\pi ^2cI}

The rotational constant can be rearranged as shown below:

I = \frac{h}{8\pi ^2cB}

We can now calculate the rotational constant as shown below:

B = \frac{1.033 \;cm^{-1}}{c}

= \frac{1.033}{299792458 \;m/s}

= 3.4453 \times 10^{-9} s^{-1}

Substituting this value into the equation for the moment of inertia gives:

I = \frac{h}{8\pi ^2cB}

= \frac{6.62607015 \times 10^{-34} \;J.s}{8\pi ^2 \times 299792458 \;m/s \times 3.4453 \times 10^{-9} s^{-1}}

= 7.8 \times 10^{-47} \;kg\;m^2

Bond Length: Using the moment of inertia, we can now determine the bond length of the molecule using the formula below:

I = \frac{m_1m_2}{m_1+m_2}r^2

where m1 and m2 are the masses of the two atoms and r is the bond length. Substituting the values given in the problem gives:

7.8 \times 10^{-47} \;kg\;m^2

= \frac{34.9688 \times 10^{-3} \;kg \times 18.9984 \times 10^{-3} \;kg}{34.9688 \times 10^{-3} \;kg + 18.9984 \times 10^{-3} \;kg}r^2\Rightarrow r

= 1.276 \; \mathring{A}. Therefore, the moment of inertia and bond length of the molecule are 7.8 × 10-47 kg m2 and 1.276 A respectively.

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The last cup contains 4 ounces of lemonade. Option (a) is correct.

Pam has 228 ounces of lemonade and she pours it into 8-ounce cups. To determine the amount of lemonade in the last cup, we divide the total amount of lemonade by the size of each cup.

228 ounces ÷ 8 ounces = 28 cups with a remainder of 4 ounces.

Since the last cup is not completely full, the remaining 4 ounces of lemonade are in the last cup. This means option (a), which states that there are 4 ounces in the last cup, is the correct answer.

By dividing the total amount of lemonade by the cup size and considering the remainder, we can determine the quantity of lemonade in the last cup, which in this case is 4 ounces.

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Answer:

Its not possible to solve without the actual table.

Step-by-step explanation:

Answer:

NICE

Step-by-step explanation:

Answer:

distance = 7.07 units

Step-by-step explanation:

x difference = 7

y difference = -1

using the Pythagorean theorem:

7² + -1² = d²

d² = 49 + 1 = 50

d = 7.07

Answer:

7.1

Step-by-step explanation:

distance between the x is 7 and y is 1

And to find the hypotenuse, you use the quadratic formula, 7^2 + 1^2 = c^2

c=50

and take the square root, which is 7.071, rounds to 7.1

Answer:

Polygon can process up to 65,000 transactions per second on a single side chain and has a block confirmation time of fewer than two seconds.

Answer:

Velocity = Distance / Time

v = d/t

v = 180m/30s

v = 60 m/s

The average velocity 60 m/s

Answer:

To graph this inequality, you can start by graphing the related function y = -x^2 - 1. This is a downward-facing parabola that opens downwards and has a vertex at (0, -1).

To graph the inequality y ≥ -x^2 - 1, you need to shade the region above the graph of the parabola. This is because any point above the parabola will have a y-coordinate that is greater than or equal to the corresponding y-coordinate on the parabola.

So, to graph the inequality, you can shade the region above the parabola. You can use a dotted line to represent the boundary of the inequality, since the inequality includes the possibility of equality (y = -x^2 - 1).

I hope this helps!

Answer:

13

Step-by-step explanation:

Answer:

time the number together

Step-by-step explanation: