What is this answer?

Answer:

To expand (x + 4)², we can use the formula for squaring a binomial: (a + b)² = a² + 2ab + b². In this case, a = x and b = 4.

So,

(x + 4)² = x² + 2(x)(4) + 4²

= x² + 8x + 16

Thus, (x+4)² when expanded and simplified gives x² + 8x + 16.

Step-by-step explanation:

Answer:

x²n+ 8x + 16

Step-by-step explanation:

(x + 4)²

= (x + 4)(x + 4)

each term in the second factor is multiplied by each term in the first factor, that is

x(x + 4) + 4(x + 4) ← distribute parenthesis

= x² + 4x + 4x + 16 ← collect like terms

= x² + 8x + 16

4 more students have 2 or 3 siblings than 4 or 5 siblings in Austin's swim class.

To determine how many more students have 2 or 3 siblings than 4 or 5 siblings in Austin's swim class, we'll count the number of responses for each category.

Step 1: Count the number of students with 2 or 3 siblings.

Responses: 2 students, 2 students, 8 students, 8 students, 9 students, 9 students

There are 6 students with 2 or 3 siblings.

Step 2: Count the number of students with 4 or 5 siblings.

Responses: 11 students, 11 students

There are 2 students with 4 or 5 siblings.

Step 3: Subtract the number of students with 4 or 5 siblings from the number of students with 2 or 3 siblings.

6 students (2 or 3 siblings) - 2 students (4 or 5 siblings) = 4 students

So, 4 more students have 2 or 3 siblings than 4 or 5 siblings in Austin's swim class.

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Answer:

4

Step-by-step explanation:

The degree of a polynomial is the highest degree of a monomial contained within the polynomial. The degree of the monomial is the sum of the exponents on the variables. Example, the degree of -4x^6y is 6+1=7.

Example, the degree of 4x^8 is 8.

So the degree of 5x^4 is 4.

The degree of 3x^2 is 2.

The degree of 1 is 0 since there is no variable in this expression.

So the degree of 5 x^4 + 3 x^2 + 1 is 4.

The correct formula that defines an arithmetic sequence is option d) tn = 5n + 14.

An arithmetic sequence is a sequence of numbers in which the difference between consecutive terms remains constant. In other words, each term can be obtained by adding a fixed value (the common difference) to the previous term.

In option a) tn = 5 + 14, the term does not depend on the value of n and does not exhibit a constant difference between terms. Therefore, it does not represent an arithmetic sequence.

Option b) tn = 5n² + 14 represents a quadratic sequence, where the difference between consecutive terms increases with each term. It does not represent an arithmetic sequence.

Option c) tn = 5n(n+14) represents a sequence with a varying difference, as it depends on the value of n. It does not represent an arithmetic sequence.

Option d) tn = 5n + 14 represents an arithmetic sequence, where each term is obtained by adding a constant value of 5 to the previous term. The common difference between consecutive terms is 5, making it the correct formula for an arithmetic sequence.

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to achieve the same overall speedup, approximately 66.67% (two-thirds) of all dynamically executed instructions should be optimized using enhancement Y.

Let's denote the fraction of dynamically executed instructions optimized using enhancement Y as "p." Since enhancement Y makes the optimized instructions only 75% faster, the remaining fraction of instructions (1-p) will not be optimized and will maintain their original speed.

To achieve the same overall speedup, we need to equate the performance improvement gained from enhancement X and enhancement Y.

For enhancement X, 50% of the instructions are optimized and made three times faster, resulting in an overall speedup of 1.5 (3/2).

For enhancement Y, a fraction "p" of the instructions is optimized and made 75% faster, while the remaining fraction (1-p) remains the same. This results in an overall speedup of (1-p) + 0.75p = 1 - 0.25p + 0.75p = 1 + 0.5p.

To achieve the same overall speedup as enhancement X, we set up the equation:

1.5 = 1 + 0.5p

Solving for "p," we find:

0.5p = 0.5

p = 1/2

Therefore, to achieve the same overall speedup, approximately 66.67% (two-thirds) of all dynamically executed instructions should be optimized using enhancement Y.

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Answer:

32 degrees

Step-by-step explanation:

The law of cosines can be used for this:

 h^2 = f^2 +g^2 -2fg·cos(H)

 cos(H) = (f^2 +g^2 -h^2)/(2fg)

 cos(H) = (650,500/763,600)

 H = arccos(6505/7636) ≈ 31.5826°

Answer: Linoleum

Step-by-step explanation:

Carpet = 250 square foot

Linoleum = 500 square foot

Buy linoleum

Answer:

50 kg of green tea leaves and 50 kg of assam black tea leaves.

Step-by-step explanation:

Let x kg be the amount of green tea and y kg be the amount of Assam tea.

x+y=100 (1) [mass]

price for 1 kg of assam tea= 7.20/600×1000g

= $12/kg

total cost= 100×10

= $1000

8x+12y= 1000 (2) [cost]

(1)×8: 8x+8y= 800 (3)

(2)-(3): (8x+12y)-(8x+8y)= 1000-800

4y= 200

y= 50 (4)

sub (4) into (1):

x+50= 100

x= 50

Answer:

The answer is 4 because 4 times 2 plus 1 equals 9 and 5 plus 4 equals 9 also

In a linear equation, the value of Y when X is 0 is called the y-intercept, not the slope.

In order to determine whether the differences between group means are statistically significant, ANOVA examines the differences between groups.

ANOVA, which stands for Analysis of Variance, is a statistical method used to compare the means of two or more groups.

It analyzes the variability between group means and within group variability to assess whether there are significant differences among the groups.

The main idea behind ANOVA is to compare the variation between groups with the variation within groups.

If the variation between groups is significantly larger than the variation within groups, it suggests that there are meaningful differences among the groups.

This implies that the differences between group means are statistically significant, indicating that the groups are not just randomly different.

ANOVA achieves this by calculating an F-statistic, which is the ratio of the variability between groups to the variability within groups.

If the F-statistic is large enough to exceed a critical value based on the chosen significance level, it indicates that the group means are significantly different.

Regarding the statement about a linear equation, it is incorrect.

In a linear equation, the value of Y when X is 0 is called the y-intercept, not the slope.

The slope refers to the rate of change of Y with respect to changes in X.

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Answer:

1/4

Step-by-step explanation:

Answer:

\( \boxed{\frac{1}{4} } \)

Step-by-step explanation:

\({2}^{ - 2} = \frac{1}{ {2}^{2} } \\ \\ \: \: \: \: \: \: \: \: \: = \frac{1}{4} \)

\( Negative \: exponent \\ \\ = > {a}^{-x} = \frac{1}{{a}^{x}} \)

Answer:

12

Step-by-step explanation:

didnt do it

Answer:

there is no number that can do that the closest you can get is 7 and 7 giving you 49 when multplied

Step-by-step explanation:

Answer:

10 × 2 × 2 = 50

10 + 2 + 2 = 14

Answer:   y > x – 2 and y < x + 1

Step-by-step explanation: hope this helps

Answer:

1. -384

2. 91.125 or 91 1/8

Step-by-step explanation:

formula created by Carl gauss. he's super interesting. if you can read his bio

it's used to figure out stuff like population growth

formula is

an = a1r^n-1

* means multiply

^ means to the power of or exponent

a1 is the first number in the sequence

so 6 times what is -12?  -2

-2 will be r

teacher wants a7

so

a7 = 6*-2^7-1

a7 = 6 * -2^6

a7 = 6 * -64

a7 = -384

the next one

to figure out a1

12 ÷ 8 = 1.5

a7 = 8 * 1.5^6

a7 = 91.125 or 91 1/8

the radius of convergence is 1 and the interval of convergence is (1, 3) in terms of x-values.

To determine the radius of convergence, we can use the ratio test. The ratio test states that if the limit of the absolute value of the ratio of consecutive terms is less than 1 as n approaches infinity, then the series converges. Applying the ratio test to the given series, we have:

lim(n->∞) |((x - 2)^(n+1)/(n+1)) / ((x - 2)^n/n)| < 1

Simplifying the expression, we get:

lim(n->∞) |(x - 2)n+1 / (n+1)(x - 2)^n| < 1

Taking the absolute value and rearranging, we have:

lim(n->∞) |x - 2| < 1

This implies that the series converges when |x - 2| < 1, which gives us the interval of convergence. The radius of convergence is the distance between the center of the series (x = 2) and the nearest point where the series diverges, which in this case is 1.

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The median annual salary would be more useful to Jaime in making the decision between pursuing graduate studies or applying for a job.

The median annual salary represents the middle value in a salary distribution, which indicates the typical or central salary of college graduates in that profession. It is less affected by extreme values or outliers in the data. Therefore, the median provides a more reliable measure of the average salary that Jaime can expect as a college graduate. On the other hand, the mean annual salary can be influenced by a few individuals with exceptionally high or low salaries, which may not accurately reflect the typical salary range. Hence, the median salary would be a better indicator for Jaime to make an informed decision.

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a) The probability of failing to meet the specification limit of 45-pounds tensile strength 15.87%.

b) The number of parts that would not meet the specification is 7,935.

a) Given that the tensile strength of a metal part is normally distributed with mean 40 pounds and standard deviation 5 pounds.

We have to find the probability of failing to meet the specification limit of 45-pounds tensile strength.

Using the standard normal distribution, we can find the probability of failing to meet the specification limit of 45 pounds as follows:

z = {45 - 40}/{5}

= 1

The probability of failing to meet the specification limit of 45 pounds is the probability that the standardized variable Z is greater than 1, which is given by:

P(Z > 1) = 0.1587

Therefore, the probability of failing to meet the specification limit of 45-pounds tensile strength is 0.1587 or 15.87%.

b) If the probability of failing to meet the specification is 0.1587, the probability of meeting the specification limit is

1 - 0.1587 = 0.8413

.If 50,000 parts are produced, then the expected number of parts that meet the specification limit is:

0.8413* 50,000 =  42,065.

Therefore, the number of parts that would not meet the specification is: 50,000 - 42,065 = 7,935.

Hence, about 7,935 parts would not meet the specification.

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Answer:

Have u done it

Step-by-step explanation:

The dimensions of the box that minimize the cost are: Length = Width = 2^(1/3) ft and Height = 1/(2^(2/3)) ft, We can also compute the minimum cost as: Cost = 4 × 2^(2/3) + 8 × 2^(1/3) ≈ $10.42

To find the dimensions of the box that will minimize the cost, we need to use optimization techniques. Let's start by defining the variables:

Let L be the length of the base of the box.
Let W be the width of the base of the box.
Let H be the height of the box.

The volume of the box is given as 4 ft3, so we have:

L × W × H = 4

We want to minimize the cost of the box, which is given by:

Cost = (2LH + 2WH) × 2 + LW × 4

where the first term represents the cost of the sides (which have a height of H and a length of L or W) and the second term represents the cost of the bottom (which has an area of LW).

Now, we can use the volume equation to solve for one of the variables in terms of the other two. For example, we can solve for H:

H = 4/(LW)

Substituting this into the cost equation, we get:

Cost = 4L + 4W + 16/(LW)

To find the dimensions that minimize the cost, we need to find the critical points of this function. Taking the partial derivatives with respect to L and W, we get:

dCost/dL = 4 - 16/(L^2W)
dCost/dW = 4 - 16/(LW^2)

Setting these equal to zero and solving for L and W, we get:

L = W = 2^(1/3)

(Note that we need to check that this is a minimum by verifying that the second partial derivatives are positive.)

Substituting these values into the volume equation, we get:

H = 1/(2^(2/3))

Therefore, the dimensions of the box that minimize the cost are:

Length = Width = 2^(1/3) ft
Height = 1/(2^(2/3)) ft

We can also compute the minimum cost as:
Cost = 4 × 2^(2/3) + 8 × 2^(1/3) ≈ $10.42

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To find the average quarterly loads for the rest of the years, you can use the formula below:

Average Quarterly Load = Total Annual Load  4 For example, let's say the total annual load for Year 1 is 800.

To find the average quarterly loads for Year 1, we would divide 800 by 4 to get an average quarterly load of 200. Then, you can use this average quarterly load to find the seasonal indices for each quarter of each year.To find the seasonal index for a given quarter and year, you would divide the actual quarterly load by the average quarterly load for that year.

For example, let's say the actual load for Quarter 1, Year 1 is 240. To find the seasonal index for this quarter and year, we would divide 240 by 200 to get a seasonal index of 1.2. You would repeat this process for each quarter and year to find the seasonal indices for all quarters and years.

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Given that0 7.5 2.5 7.5 f(x)dx = 7...............(1) ∫0¹ 5 [ f(x) dx = 5..........(2) ∫0¹ 5 [ f(x) dx = 2.5..........(3) ∫0¹ (7 f(x) — 5) dx = 5..........(4) Let's solve the given expressions one by one. The answer is:^* f(x) dx = 7, 0 5 5 [ f(x) dx = 2.5 2.5 1²8 (7 f(x) — 5) dx = 5

Solution 1:From equation (1),∫0^7.5 f(x)dx + ∫7.5^2.5 f(x)dx + ∫2.5^7.5 f(x)dx = 7

Simplify the integral equation by,∫2.5^7.5 f(x)dx = 7 - [∫0^7.5 f(x)dx + ∫7.5^2.5 f(x)dx].....................(5)

Solution 2:From equation (2),∫0¹ 5 [ f(x) dx = 5This is the same as ∫0¹ f(x) dx = 1......................(6)

Solution 3:From equation (3),∫0¹ 5 [ f(x) dx = 2.5This is the same as ∫0².5 f(x) dx = 0.5......................(7)

Solution 4:From equation (4),∫0^7 (7 f(x) dx) — ∫0^7 (5 dx) = 5∫0^7 7 f(x) dx = ∫0^7 (5 dx) + 5∫0^7 1 dx

Simplify the above equation,∫0^7 7 f(x) dx = 5(7) = 35

This is the final solution.

Therefore, the answer is:^* f(x) dx = 7, 0 5 5 [ f(x) dx = 2.5 2.5 1²8 (7 f(x) — 5) dx = 5

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The student did the subtraction step of PEMDAS out of order.

PEMDAS is a rule regarding precedence of operations, given as follows, from highest to lowest precedence.

In this problem, the expression is:

(6 - 2)² + 12  - 3².

The student reached an answer of 97 as follows:

(6 - 2)² + 9² = 4² + 9² = 16 + 81 = 97.

The student did the subtraction first, hence the student did the subtraction step of PEMDAS out of order.

The correct solution is:

(6 - 2)² + 12  - 3² -> Solve the Parenthesis.

4² + 12 - 3² -> Solve the Exponents.

16 + 12 - 9 -> Solve the Addition and Subtraction.

19.

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