7/8 - 1/2 please ASAP

Answer:

-40

Step-by-step explanation:

y−27−13

=y+−27+−13

Combine Like Terms:

=y+−27+−13

=(y)+(−27+−13)

=y + −40

Okay, it seems like you want to analyze a sample of 16 babies based on their weight.

The information you provided states that the Center for Disease Control and Prevention reports that 25% of baby boys aged 6-8 months in the United States weigh more than 20 pounds.

However, you haven't mentioned the specific question or analysis you want to perform on the sample. Could you please clarify what you would like to know or do with the given information?

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Answer:

Step-by-step explanation:

Let the time taken to reach 12,000 feet = x

Distance traveled in 1 minute = 2000 ft

Distance traveled in 'x' minute = 2000 * x = 2000x

30,000 - 2000x = 12000

Add 2000x to both sides

30,000 = 12000 + 2000x

Now subtract 12,000 from both sides

30000 - 12 000 = 2000x

2000x =  18 000

Divide both sides  by 2000

x = 18000/2000

x = 9 minutes

The above obtained relation can be used to find df(0) / dz as we now have df/dr (dr/dz) evaluated at z=0. Thus,df(0) / dz = 2 * 0 / (-dx - 2jdx) = 0. Hence, the required solution is df(0) / dz = 0.

Given complex function is f(z) = x2 + jy2. We are supposed to find df(0) / dz.Solution:To find df(0) / dz, we need to first find f(z) as a function of z. Since, f(z) = x2 + jy2, we have, f(z) = |z|2. Now, we have, |z|2 = (x+iy) (x-iy) = x2 + y2 = r2. Differentiating this with respect to z, we get,df / dz (|z|2) = df / dz (r2) = 2r dr/dz. Now, we need to find dz. This can be found using the following relation, dz = dx + jdy.

Thus, we have,dz = dx + jdy = 1/2 (dz + d\bar{z}) + j 1/2 (dz - d\bar{z}) = (dx - dy)/2 + j (dx + dy)/2. 

Therefore,

df/dz = df/dr (dr/dz)

= 2r / (dx - dy - 2jdx). T

he above obtained relation can be used to find df(0) / dz as we now have df/dr (dr/dz) evaluated at z=0.

Thus, df(0) / dz = 2 * 0 / (-dx - 2jdx) = 0. Hence, the required solution is df(0) / dz = 0.

To find df(0) / dz, we need to first find f(z) as a function of z.

Since, f(z) = x2 + jy2,

we have, f(z) = |z|2.

Now, we have, |z|2 = (x+iy) (x-iy) = x2 + y2 = r2.

Differentiating this with respect to z, we get,

df / dz (|z|2) = df / dz (r2) = 2r dr/dz. 

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Answer:

x = -1

Step-by-step explanation:

2(x - 3) = -8

2x - 6 = -8

2x = -8 + 6

2x = -2

2x/2 = -2/2

x = -1

Answer:

The output is 22

Step-by-step explanation:

So, you are going to want to plug in 5 for x, therefore-

y = 5(5) - 3

Solve from there

y = 25 - 3

y = 22

Answer:

x = 5 and y = 22

Step-by-step explanation:

y = 5 x − 3

y = ( 5 ) ( 5 ) − 3

y = 22

For number 20:

Because a triangle is 180 degrees, we will equal all the angles we know to that. So, this is how we will write our equation:

Solve for x:

60 + x + 20 + 3x = 180

4x = 100

x = 20

Using 75, you can find the angle measure by plugging 75 where x is present in the angle measures. For example:

x = 20,

20 + 20 = 40

3(20) = 60

-

For number 21:

The shape shown is basically two triangles, so 180 x 2 is 360. Again, same procedure. Add all known angle measures and make an equation where they all equal 360.

Solve for x:

x-5+x+35+1.4x+x=360

x = 75

By isolating x, you should get an answer of 75. Now, plug that into each of the equations:

x = 75

75 + 35 = 110

75 - 5 = 70

1.4(75) = 105

Answer:

A half is not a unit of measure for weight, so it is not possible to answer this question.

The probability of getting 5 or more sales for 1000 telephone calls is  0.8810. The probability of success (getting a sale) is 1% or 0.01, and the number of trials is 1000.

Using a binomial probability calculator or a statistical software, we can calculate the probability as follows:

P(X ≥ 5) = 1 - P(X < 5)

P(X < 5) = P(X = 0) + P(X = 1) + P(X = 2) + P(X = 3) + P(X = 4)

Using the binomial probability formula, we can calculate each individual probability:

P(X = k) = (nCk) * p^k * (1 - p)^(n - k)

where n is the number of trials, k is the number of successes, and p is the probability of success.

P(X < 5) = P(X = 0) + P(X = 1) + P(X = 2) + P(X = 3) + P(X = 4)

         = (1000C0) * (0.01^0) * (1 - 0.01)^(1000 - 0)

           + (1000C1) * (0.01^1) * (1 - 0.01)^(1000 - 1)

           + (1000C2) * (0.01^2) * (1 - 0.01)^(1000 - 2)

           + (1000C3) * (0.01^3) * (1 - 0.01)^(1000 - 3)

           + (1000C4) * (0.01^4) * (1 - 0.01)^(1000 - 4)

Using a binomial probability calculator or a statistical software, the value of P(X < 5) is approximately 0.1189.

Therefore, the probability of getting 5 or more sales for 1000 telephone calls is:

P(X ≥ 5) = 1 - P(X < 5)

         = 1 - 0.1189

         ≈ 0.8810

So, the correct answer is A) 0.8810.

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The correct statement is c. The Adjusted R-squared is a measure used in multiple regression analysis that is between 0 and 1. It is different from the R-squared value in simple linear regression.

The Adjusted R-squared can decrease if the addition of another X regressor does not sufficiently lower the sum of squared residuals (SSR) relative to the impact of increasing the number of predictors (k). It measures the proportion of the variance explained by the predictors, adjusted for the number of predictors and the sample size, rather than the ratio of the sum of squared residuals to the total sum of squares. It provides a measure of how well the regression model fits the data, and it ranges between 0 and 1. A value closer to 1 indicates that a higher proportion of the variance in the dependent variable is explained by the predictors.

Adding another X regressor to the multiple regression model can impact the Adjusted R-squared. If the additional regressor does not significantly contribute to reducing the sum of squared residuals (SSR) relative to the increase in the number of predictors (k), the Adjusted R-squared can decrease. This means that the added regressor does not improve the model's ability to explain the variance in the dependent variable adequately.

However, the Adjusted R-squared does not directly measure the ratio of the sum of squared residuals to the total sum of squares. Instead, it represents the proportion of the variance explained by the predictors, adjusted for the number of predictors and the sample size. It penalizes models with a large number of predictors that may overfit the data, thereby providing a more reliable measure of the model's goodness of fit.

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is it 10+8=18 is this it hopefully this helps

Answer:

Option C

Step-by-step explanation:

10 + n is the total number of computers Mr. James will sell this week, since he has already sold 10 computers and will sell n more. Because he wants to sell at least 18 computers, the correct symbol is ≥.

Answer:

(-4,-9)

Step-by-step explanation:

vertex form: y=a(x-h)^2+k

hk=vertex of x and y

inside parentheses=horizontal (opposite signs)

that’s why it’s -4 instead of 4 for h (x) while -9 stays the same since it’s not inside the parentheses

Answer:

Yes

Step-by-step explanation:

upon graphing it, I discovered that it made a straight line

X-intercept: 0.5

Y-intercept: -2

According to the question (a) The volume of the solid is given by \(\(V = \iiint_D dV\)\) over the specified region. (b) The center of mass of the solid is determined by \(\(x_{\text{cm}} = \frac{1}{M} \iiint_D x \cdot dV\), \(y_{\text{cm}} = \frac{1}{M} \iiint_D y \cdot dV\), and \(z_{\text{cm}} = \frac{1}{M} \iiint_D z \cdot dV\)\), where \(\(M\)\) is the total mass of the solid.

(a) The volume of the solid can be found by integrating the given equation over the specified region:

\(\[V = \iiint_D dV\]\)

where \(\(D\)\) represents the region defined by \(\(4x^2 + y^2 + z^2 \leq 9\) and \(z \geq \sqrt{4x^2 + y^2}\)\).

(b) The center of mass of the solid can be found using the formulas:

\(\[x_{\text{cm}} = \frac{1}{M} \iiint_D x \cdot dV, \quad y_{\text{cm}} = \frac{1}{M} \iiint_D y \cdot dV, \quad z_{\text{cm}} = \frac{1}{M} \iiint_D z \cdot dV\]\)

where \(\(M\)\) represents the total mass of the solid, given by \(\(M = \rho \cdot V\), and \(\rho\)\)  is the constant density.

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It is true that (51)n+1 + n = O(lg n).

Select all the statements below which are TRUE.
The true statements are the following:

1. 2n + (2n)5 + n! = Ω(n!)
2. (2n)3 lg n + n2 lg3 n = θ(n3 lg n)
3. (51) n+1 + n = O(lg n)

Statement 1: 2n + (2n)5 + n! = Ω(n!)
We know that n! grows faster than 2n and (2n)5.

Hence, it is true that 2n + (2n)5 + n! = Ω(n!).

Statement 2: (2n)3 lg n + n2 lg3 n = θ(n3 lg n)
We know that the fastest-growing term in the above function is n3 lg n. Therefore, it is true that (2n)3 lg n + n2 lg3 n = θ(n3 lg n).

Statement 3: (51)n+1 + n = O(lg n)
Since 51 is greater than 1, we can say that (51)n+1 grows faster than n. Hence, it is true that (51)n+1 + n = O(lg n).

Note: The remaining statements are false.

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Answer:

6 – (–3) = 9

|6 – (–3)| = 9

Step-by-step explanation:

Expression A:

\(6-(-3)\\\\6+3\\\\9\)

Expression B:

\(|6-(-3)|\\\\|6+3|\\\\|9|\\\\9\)

Hope this helps.

Answer:

4mm

Step-by-step explanation:

Joseph made a scale drawing of an Italian restaurant. The scale he used was 1 millimeter : 6 meters.

From the above question, our scale factor is given as:

1 millimeter : 6 meters.

1 mm = 6 m

Which also means

6m = 1 mm

The restaurant's kitchen is 24 meters long in real life. How long is the kitchen in the drawing?

Hence, we can calculate this as

6m = 1 mm

24 m = x mm

Cross Multiply

6 m × x mm = 24m × 1 mm

x mm = 24m × 1 mm/6m

x mm = 4 mm

Therefore, the length of the kitchen in the drawing is 4mm

Answer:

\(x=5,\frac{-9+\sqrt{255}i }{4} ,\frac{-9-\sqrt{255}i }{4}\)

Step-by-step explanation:

1) Move all terms to one side.

\(2x^{3} -x^{2} -3x-210=0\)

2) Factor \(2{x}^{3}-{x}^{2}-3x-210\) using Polynomial Division.

1 -  Factor the following.

\(2x^{3} -x^{2} -3x-210\)

2 -  First, find all factors of the constant term 210.

\(1,2,3,4,5,6,7,10,14,15,21,30,35,42,70,105,210\)

3) Try each factor above using the Remainder Theorem.

Substitute 1 into x. Since the result is not 0, x-1 is not a factor..

\(2*1^{3} -1^{2} -3*1-210=-212\)

Substitute -1 into x. Since the result is not 0, x+1 is not a factor..

\(2(-1)^{3} -(-1)^{2} -3*-1-210=-210\)

Substitute 2 into x. Since the result is not 0, x-2 is not a factor..

\(2*2^{3} -2^{2} -3*2-210=-204\)

Substitute -2 into x. Since the result is not 0, x+2 is not a factor..

\(2{(-2)}^{3}-{(-2)}^{2}-3\times -2-210 = -224\)

Substitute 3 into x. Since the result is not 0, x-3 is not a factor..

\(2\times {3}^{3}-{3}^{2}-3\times 3-210 = -174\)

Substitute -3 into x. Since the result is not 0, x+3 is not a factor..

\(2{(-3)}^{3}-{(-3)}^{2}-3\times -3-210 = -264\)

Substitute 5 into x. Since the result is 0, x-5 is a factor..

\(2\times {5}^{3}-{5}^{2}-3\times 5-210 =0\)

------------------------------------------------------------------------------------------

⇒ \(x-5\)

4)  Polynomial Division: Divide \(2{x}^{3}-{x}^{2}-3x-210\)  by \(x-5\).

                                               \(2x^{2}\)                       \(9x\)                      \(42\)

                                      -------------------------------------------------------------------------

\(x-5\)                               |    \(2x^{3}\)                          \(-x^{2}\)                     \(-3x\)     \(-210\)

                                           \(2x^{3}\)                             \(-10x^{2}\)

                                        -----------------------------------------------------------------------

                                                                             \(9x^{2}\)                \(-3x\)       \(-210\)

                                     --------------------------------------------------------------------------

                                                                          \(42x\)                              \(-210\)

                                                                         \(42x\)                               \(-210\)

                                      -------------------------------------------------------------------------

5)  Rewrite the expression using the above.

\(2x^2+9x+42\)

\((2x^2+9x+42)(x-5)=0\)

3) Solve for \(x.\)

\(x=5\)

4)  Use the Quadratic Formula.

1 - In general, given \(a{x}^{2}+bx+c=0\) , there exists two solutions where:

\(x=\frac{-b+\sqrt{b^{2} -4ac} }{2a} ,\frac{-b-\sqrt{b^2-4ac} }{2a}\)

2 -  In this case, \(a=2,b=9\) and \(c = 42.\)

\(x=\frac{-9+\sqrt{9^2*-4*2*42} }{2*2} ,\frac{-9-\sqrt{9^2-4*2*42} }{2*2}\)

3 - Simplify.

\(x=\frac{-9+\sqrt{255}i }{4} ,\frac{-9-\sqrt{255}i }{4}\)

5) Collect all solutions from the previous steps.

\(x=5,\frac{-9+\sqrt{255}i }{4} ,\frac{-9-\sqrt{255}i }{4}\)

The total length of the curve is:

L = L₁ + L₂ + L₃ = 2.841 + 2 + 4 = 8.841.

What is the linear function?

A linear function is defined as a function that has either one or two variables without exponents. It is a function that graphs to a straight line.

To find the length of the curve, we need to break it into its three segments and find the length of each segment separately.

Segment 1: y = x² from (0,0) to (2,4)

The length of this segment can be found using the arc length formula for a curve y = f(x) from x = a to x = b:

L = ∫[a,b] √[1 + (dy/dx)²] dx

In this case, f(x) = x², so dy/dx = 2x. Thus, the length of this segment is:

L1 = ∫[0,2] √[1 + (2x)²] dx ≈ 2.841

Segment 2: Straight line from (2,4) to (0,4)

The length of this segment is simply the distance between the two points:

L₂ = √[(0-2)² + (4-4)²] = 2

Segment 3: y-axis from (0,4) to (0,0)

The length of this segment is simply the distance between the two points:

L3 = √[(0-0)² + (4-0)²] = 4

Therefore, the total length of the curve is:

L = L₁ + L₂ + L₃ = 2.841 + 2 + 4 = 8.841

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Answer:

what shape is ABCD?

Answer:

Step-by-step explanation: 60%

Answer:

-2 (negative 2)

Step-by-step explanation:

8÷2 =4

4-6 = -2

hope this helps

The probability of drawing a 7 from a normal deck of cards is 1/13 or approximately 0.0769 (rounded to four decimal places).

A normal deck of cards contains 52 cards, which includes 13 cards in each of the four suits: clubs, diamonds, hearts, and spades. Within each suit, there are cards numbered 2 through 10, plus face cards (jack, queen, king) and an ace.

Since there are four 7's in a deck of cards (one in each suit), the probability of drawing a 7 from a normal deck of cards is simply the ratio of the number of 7's to the total number of cards:

P(7) = 4/52

Simplifying, we get:

P(7) = 1/13

P(7) = 0.0769

It is important to note that the probability of drawing a 7 is independent of any previous draws, assuming the deck is shuffled thoroughly before each draw. That is, the probability of drawing a 7 remains the same whether it is the first card drawn or the tenth card drawn.

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Answer:

13

Step-by-step explanation:

because

Answer:

D

Step-by-step explanation:

7 6 5 4 3 2 1 0 -1 -2 -3 -4 -5 -6 -7

count

65+28H≤250

Step-by-step explanation:

Anand can afford at most 6 hours.

Step-by-step explanation:

Answer:

I JUST LOVE GETTING POINTS

Step-by-step explanation:

The zeros of the factored form of the equation is x = 1, 5, and -7.

Factorization is the method of breaking a number into smaller numbers that multiplied together will give that original form. Factorization is expressing a mathematical quantity in terms of multiples of smaller units of similar quantities.

We have been given the factored equation as; y=(x−1)(x−5)(x+7) that has zeros (or x-intercepts).

y=(x−1)(x−5)(x+7)

then the roots of the equation;

For (x−1)

x - 1 = 0

x = 1

For (x−5)

x - 5 = 0

x = 5

For (x+ 7)

x + 7 = 0

x = -7

Hence, The zeros of the factored form of the equation is x = 1, 5, and -7.

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r=6cm and h=7cm

Volume of right circular cone =31πr2h

                                                 =31×722×(6)2×7

                                                 =31×22×36

                                                 =264cm3

dunno whether the formula is correct or not!

Answer:

p = 1.7

Step-by-step explanation:

Step 1: Write equation

4p + 3 = 9.8

Step 2: Solve for p

The planes −3x -19y + 7z + 5 = 0 and 3x + y + 4z − 6 = 0  are neither parallel nor orthogonal, so the angle of intersection is 105.8°. So, the correct option is e).

To find the angle of intersection, we can first find the normal vectors of each plane, which are the coefficients of x, y, and z in their respective equations. For the first plane, the normal vector is (-3, -19, 7), and for the second plane, the normal vector is (3, 1, 4).

The angle between two planes can be found using the dot product of their normal vectors and the formula:

cosα = (n1 · n2) / (|n1| |n2|)

where n1 and n2 are the normal vectors of the planes.

Using this formula, we have:

\(cos\alpha = (-3)(3) + (-19)(1) + (7)(4) / \sqrt{((-3)^2 + (-19)^2 + 7^2)} \sqrt{(3^2 + 1^2 + 4^2)\)

\(cos\alpha = -14 / \sqrt{579} \sqrt{26}\)

\(cos\alpha\) ≈ -0.294

Therefore, α ≈ 105.8°.

So the correct answer is e) None of the above.

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