Find the value of 1/4 + 2/3

Answer:

(x+8)

Step-by-step explanation:

Answer:

x2 + 8x + 12

Step-by-step explanation:

(x + 2) (x + 6) = x (x + 6) + 2 (x + 6)

= x * x + 6x + 2 (x + 6)

= x2 + 6x + 2 (x + 6)

= x2 + 6x + 2x + 2 * 6

= x2 +6x + 2x + 12

= x2 + 8x + 12

If one number is the multiple of another number, then the L.C.M. will be the smaller number (the number whose multiple the other number is).

Answer:

b.

Step-by-step explanation:

a. (7 - 1) + 3/9 =

= 6 + 1/3

= 6 1/3

b. (3+4) / (1/2) / ( 8+6) =

= 7/(1/2) / 14

= 14/14

= 1

c. (10 - 3) - 1/6 =

= 7 - 1/6

= 6 5/6

d. 2 × 3 - 5 × 5 - 4 =

= 6 - 25 - 4

= 19 - 4

= -23

Answer: b.

Step-by-step explanation:

Level of confidence decreases if the margin of error decreases(when the sample size is kept the same) Goes Down

A confidence interval is a range of estimates for an unknown parameter in frequentist statistics. The 95% confidence level is the most popular, but other levels, like 90% or 99%, are occasionally used when computing confidence intervals.

We are given asked when the sample size is kept the same,

we know that the margin of error is nothing but a statistic which tells us how many percentage points our results will differ from the real population value.we know that when a greater error is allowed, the more will be the confidence(fundamental concept of confidence intervals)

Let Margin of Error be represented by E and the confidence level by C hence the relationship goes like this,

                                           E↑⇔C↑and E↓⇔C↓

Here we are asked when the sample size is kept the same, what will happen to the level of confidence if the margin of error decreases .

The answer is that Level of confidence decreases if the margin of error decreases(when the sample size is kept the same) Goes Down.

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There were 42 people who are fishing if the ratio of people watching whales to people fishing was five to seven.

A numerical expression is algebraic information stated in the form of numbers and variables that are unknown. Information can is used to generate numerical expressions.

We have been given that the ratio of people watching whales to people fishing was five to seven if there were 72 people.

Let the number of people who watch whales would be 5x

And the number of people who are fishing would be 7x

According to the given condition, the required solution would be as:

⇒ 5x + 7x = 72

⇒ 12x = 72

⇒ x = 6

So the number of people who are fishing = 7 × 6 = 42

Therefore, there were 42 people who are fishing.

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The formula is : A=6a^2

So lets say its a cube with edge lengths of 4

We first find out the area of each side by multiplying 4*4

They you multiple the answer of that, 16, by 6, for each of the sides.

A = 96 Units ^2

Answer:

creo que es la respuesta 8× +8=72

Answer:

0

Step-by-step explanation:

\(40k = - 36\)

\(k = - \frac{9}{10} \)

\(40( - \frac{9}{10} ) + 36 = 0\)

\( - 36 + 36 = 0\)

Answer:

-2(3+6) 22-5x= -6-12+22-5x

= -6+22-5x

=5x-6

Answer:

x = -4 (hope this helps...) Branliest please :3

Step-by-step explanation:

22 - 5x = -2(3 + 6x)

22 - 5x = -6 - 12x  (multiply -2 in the parenthesis)

12x - 5x = -6 - 22  (get all the x's and regular numbers on 1 side)

7x = -28 (solve)

Answer: x = -4

The man's semimonthly paycheck before taxes is $667.33.

To calculate the semimonthly paycheck before taxes, we need to divide the annual salary by the number of pay periods in a year. In this case, the man earns $16,008 per year and is paid semimonthly.

There are usually 24 semimonthly pay periods in a year (twice a month for 12 months). To find the semimonthly paycheck, we divide the annual salary by 24:

$16,008 / 24 = $667.33 (rounded to the nearest cent)

Therefore, the man's semimonthly paycheck before taxes is $667.33.

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By solving a quadratic equation we conclude that the rocket will be at 10 ft from the ground 10.8 seconds after it is launched.

Here we know that the height of the rocket is modeled by the quadratic equation:

h = -16*t^2 + 170*t + 40

The rocket will be at 10ft from the ground when:

10  = -16*t^2 + 170*t + 40

So we need to solve that quadratic equation for t:

0 =  -16*t^2 + 170*t + 40 - 10

0 = -16*t^2 + 170*t + 30

The solutions are given by the quadratic formula:

\(t = \frac{-170 \pm \sqrt{170^2 - 4*(-16)*30}}{2*-16} \\\\t = \frac{-170 \pm175.6}{-32}\)

we only care for the positive solution, which is:

t = (-170 - 175.6)/-32 = 10.8

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The population per square mile is 3643.75

The given parameters are

Length= 8 miles

Width= 3 miles

The area is calculated as:

Area = Length * Width

So, we have

Area = 8 * 3

Area = 24 square miles

The population per square miles is

Population per square mile = 87450/24

Divide

Population per square mile = 3643.75

Hence, the population per square mile is 3643.75

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the percent of the discount is approximately 19.9%.

Percentage is a way of expressing a number or a quantity as a fraction of 100. It is denoted by the symbol %, and it represents the number of parts per hundred.

The regular price of 15 songs would be:

15 songs x $0.89 per song = $13.35

But you paid only $10.68, which is $13.35 - $10.68 = $2.67 less than the regular price.

So the discount is:

Discount = $2.67

To find the percent discount, we can divide the discount by the regular price and multiply by 100:

Percent Discount = (Discount / Regular Price) x 100%

Percent Discount = ($2.67 / $13.35) x 100%

Percent Discount = 0.199 x 100%

Percent Discount = 19.9%

Therefore, the percent of the discount is approximately 19.9%.

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The probability P(3 < X < 6, Y) is 0.

To find the probability P(3 < X < 6, Y) based on the joint probability density function (pdf) f(x, y) = 10\(e^{-2x-5y}\), where x > 0 and y > 0, we need to integrate the joint pdf over the given region.

P(3 < X < 6, Y) can be calculated as follows:

P(3 < X < 6, Y) = ∫∫(3 < x < 6)∫(0 < y) f(x, y) dy dx

= ∫(3 < x < 6) ∫(0 < y) 10\(e^{-2x-5y}\) dy dx

To evaluate this double integral, we integrate with respect to y first, and then with respect to x.

∫(0 < y) 10\(e^{-2x-5y}\)  dy = [-2\(e^{-2x-5y}\) ] evaluated from y = 0 to y = ∞

= [-2\(e^{-2x-5}\) ∞] - [-2\(e^{-2x-5}\) *0)]

Since y > 0, the second term on the right side becomes zero.

= [-2\(e^{-2x}\)-∞] = 0

Thus, the integral with respect to y yields zero.

Now, we integrate the result with respect to x over the range (3 < x < 6).

∫(3 < x < 6) 0 dx = 0

Therefore, the probability P(3 < X < 6, Y) is 0.

In the 4th decimal place, the probability is 0.0000.

Hence, P(3 < X < 6, Y) is 0 (rounded to the 4th decimal place).

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Answer:

1. The Positive Integers - Natural Numbers

2. An Ordering of Quantities Separated by Commas - Sequence

3. The Sum of The Terms of an Associated Sequence - Series

4. One of The Individual Quantities of a Sequence - Term of a Sequence

5. A Formula That Yields The Value of a Term When That Term is Substituted In It - General Term of a Sequence

6. A Series That Has a Common Difference Between Terms - Arithmetic Series

7. A Series That Has a Common Ratio Between Terms Sequence - Geometric Series

8. A Sequence in Which Each Successive Terms Changes Sign - Alternating Sequence

Series are sum of terms of sequences. The names of each of the items specified are specified below.

Sequence is an ordering of numerical or mathematical quantities separated by commas, and series is sum of terms of sequences if addition is defined for those terms.

For the considered definitions, their names are given as:

1. the positive integers : It is called Natural Numbers. Example: 4 is a natural number.

2. an ordering of quantities separated by commas: Sequence

Example: 2,4,6...

3. the sum of the terms of an associated sequence: Series

Example: 2 + 4 + 6 + ...

4. one of the individual quantities of a sequence term of a sequence: Term

5. a formula that yields the value of a term when that term is substituted in it: general term of a sequence

6. a series that has a common difference between terms: Arithmetic series

7. a series that has a common ratio between terms: Geometric series

8. a sequence in which each successive terms changes sign: Alternating sequence

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The operationalization of the used constructs of the model is not typically considered a part of the theoretical aspects of a model. The correct option is (B).

Operationalization refers to the process of defining and measuring the variables or constructs in a study. It involves turning abstract concepts into observable and measurable variables.

On the other hand, the theoretical parts of a model typically include:

A. The hypotheses corresponding to the model: This refers to the specific statements or predictions derived from the theoretical framework of the model.

Hypotheses provide testable expectations about the relationships between variables in the model.

C. A logical explanation of the relationship within a model: This involves providing a theoretical rationale or logical explanation for the expected relationships between variables in the model.

It is the theoretical framework that underlies the model and helps in understanding the underlying mechanisms or processes.

D. A graphical representation of the model: Graphical representation, such as diagrams or visual models, can be used to depict the structure or relationships within a model. It helps in visualizing the connections between variables and understanding the overall framework.

Therefore, B. The operationalization of the used constructs of the model does not belong to the theoretical parts of a model.

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Answer:

-13.5

Step-by-step explanation:

trust me

Answer:

250 dollars

Step-by-step explanation:

Answer:

34.78

Step-by-step explanation:

8/23

Answer:

4x³

5y^5

Pls mark as brainliest

The z-score for x = 30.2 is approximately -0.49.

What is z-score measures?

The z-score, also known as the standard score, is a measure used in statistics to quantify the number of standard deviations that a given data point is from the mean of a dataset.

To calculate the z-score for x = 30.2, we use the formula:

z = (x - μ) / σ

where x is the observed value, μ is the population mean, and σ is the population standard deviation. In this case, we are given the sample mean and sample standard deviation, so we will use them as estimates for the population parameters.

Substituting the given values, we have:

z = (30.2 - 33.7) / 7.2

Simplifying, we get:

z = -0.49

Rounding to two decimal places, we have:

z ≈ -0.49

Therefore, the z-score for x = 30.2 is approximately -0.49.

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the probability that someone prefers the lemon-flavored water over both competitors' brands is approximately 13.3%

we need to look at the overlap between the two groups that preferred the lemon-flavored water over competitor A and competitor B. According to the survey results, 35% of the 1000 people surveyed preferred the lemon-flavored water over competitor A, and 38% preferred it over competitor B. However, we also know that 47% did not prefer the lemon-flavored water over either competitor's brand.
To calculate the probability that someone prefers the lemon-flavored water over both competitors' brands, we need to use conditional probability. We can start by subtracting the percentage of people who did not prefer the lemon-flavored water over either competitor's brand from 100% to get the percentage of people who preferred at least one of the three drinks.
100% - 47% = 53%
Next, we can find the probability that someone prefers the lemon-flavored water over both competitors' brands by multiplying the percentages of people who preferred the lemon-flavored water over competitor A and competitor B.
35% × 38% = 13.3%
In conclusion, based on the survey results, we can say that there is a 13.3% probability that someone prefers the lemon-flavored water over both competitor A and competitor B.

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Given:

∆y and dy.

∆x and dx.

Required:

To explain the difference between ∆y and dy, is there difference between ∆x and dx.

Explanation:

∆y and dy are same, dy/dx is the differentiation of y with respect to x or dx/dy is the differentiation of x with respect to y.

Whereas del y is the partial differential of x where we differentiate only one at a time keeping the other variables constant and we partially differentiate all to find who differential.

In the same way ∆x and dx are same, dx/dy is the differentiation of x with respect to y or dy/dx is the differentiation of y with respect to x.

Whereas del x is the partial differential of y where we differentiate only one at a time keeping the other variables constant and we partially differentiate all to find who differential.

Final Answer:

∆y and dy are same, dy/dx is the differentiation of y with respect to x or dx/dy is the differentiation of x with respect to y.

Whereas del y is the partial differential of x where we differentiate only one at a time keeping the other variables constant and we partially differentiate all to find who differential.

In the same way ∆x and dx are same, dx/dy is the differentiation of x with respect to y or dy/dx is the differentiation of y with respect to x.

Whereas del x is the partial differential of y where we differentiate only one at a time keeping the other variables constant and we partially differentiate all to find who differential.

We are going to apply the Triangle Inequality Theorem in this problem.

Given sides a, b, and c, a triangle exists if:

If each of these inequalities hold, we can say that the triangle does, in fact, exist.

The quickest way to test any triangle is to add the shortest side and the medium side to determine if their sum is greater than the longest side.

Option 1: 15, 17, 25

15, 17, 25 is a triangle.

Option 2: 8, 15, 6

This is false.

Option 3: 19, 9, 13

19, 9, 13 is a triangle.

Option 4: 24, 15, 33

24, 15, 33 is a triangle.

Option 5: 9, 21, 29

9, 21, 29 is a triangle.

Option 6: 3, 7, 10

This is false.

The following groups of sides form triangles: 15, 17, 25; 19, 9, 13; 24, 15, 33; 9, 21, 29.

Therefore, the baby pool is 16 yards long, which is 2/5 (two-fifths) of the length of the adult pool.

The length of the baby pool is 2/5 (two-fifths) as long as the adult pool.

To determine this, we can compare the lengths of the two pools. Given that the length of the adult pool is 40 yards and the length of the baby pool is unknown, we can set up the following equation:

Baby pool length / Adult pool length = 2/5

Let's solve for the baby pool length:

Baby pool length = (2/5) * Adult pool length

Baby pool length = (2/5) * 40 yards

Baby pool length = 16 yards

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Answer:

congruent, the triangles have 2 congruent sides and a congruent angle, therefore the triangles are congruent by the SAS Theorem

Step-by-step explanation:

5x-28 = 2x+8

3x=36

x=12

x+4 = 2x-8

(12)+4 = 2(12)-8

16 = 16, AB is congruent to DE

x-2 = 3x-26

(12)-2 = (36)-26

10 = 10, AC is congruent to DF

Present value of the loan amount is $\(27\) with a maturity value of $\(15000\) for \(9\) months at \(6\)%

How to find the present value of loan amount ?

We know that

Maturity value of loan amount \(= 15000\)

Time period is \(=9\) months

Rate (r)\(=6\) %

Present value of loan amount=?

So we can use the formula of maturity level

\(MV=PV*(1+r*t)\)

Substitute the values

\(15000=PV *(1+6*9)\\15000=PV(55)\\\frac{15000}{55} =PV\\27.27=PV\)

So present value of the loan amount is $\(27\) in round figure.

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To find the probabilities based on the standard normal variable Z, we can use the standard normal distribution table (also known as the z-table). The z-table provides the cumulative probabilities up to a specific z-value.

a. P(-1.32 < Z < -0.76):

To find this probability, we need to subtract the cumulative probability at -0.76 from the cumulative probability at -1.32.

P(-1.32 < Z < -0.76) = P(Z > -0.76) - P(Z > -1.32)

Using the z-table, we find:

P(Z > -0.76) = 1 - 0.7764 = 0.2236

P(Z > -1.32) = 1 - 0.9066 = 0.0934

P(-1.32 < Z < -0.76) = 0.2236 - 0.0934 = 0.1302

b. P(0.1 < Z < 1.77):

Similarly, we find the cumulative probabilities at 0.1 and 1.77 and subtract to find the probability.

P(0.1 < Z < 1.77) = P(Z > 0.1) - P(Z > 1.77)

Using the z-table, we find:

P(Z > 0.1) = 1 - 0.5398 = 0.4602

P(Z > 1.77) = 1 - 0.9616 = 0.0384

P(0.1 < Z < 1.77) = 0.4602 - 0.0384 = 0.4218

c. P(-1.65 < Z < 0.03):

Again, we find the cumulative probabilities at -1.65 and 0.03 and subtract to find the probability.

P(-1.65 < Z < 0.03) = P(Z > -1.65) - P(Z > 0.03)

Using the z-table, we find:

P(Z > -1.65) = 1 - 0.9505 = 0.0495

P(Z > 0.03) = 1 - 0.5120 = 0.4880

P(-1.65 < Z < 0.03) = 0.0495 - 0.4880 = -0.4385 (Note: It is not possible to have a negative probability, so the value is likely a calculation error or typo in the problem statement.)

d. P(Z > 4.1):

This probability represents the area to the right of 4.1 under the standard normal curve.

P(Z > 4.1) = 1 - P(Z < 4.1)

Using the z-table, we find that P(Z < 4.1) = 0.9999 (the closest value available in the table for 4.1)

P(Z > 4.1) = 1 - 0.9999 = 0.0001

Therefore:

a. P(-1.32 < Z < -0.76) = 0.1302

b. P(0.1 < Z < 1.77) = 0.4218

c. P(-1.65 < Z < 0.03) = -0.4385 (likely a calculation error or typo)

d. P(Z > 4.1) = 0.0001

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Answer:

It woule be c and d, so a)

Step-by-step explanation:

Only a and b are functions.