. given that z is a standard normal random variable, a positive value of z indicates that: question 2 options: a) the standard deviation of z is negative b) the probability associated with z is negative c) the value z is to the left of the mean d) the area between zero and z is negative. e) the value z is to the right of the mean

Answer:

B

Step-by-step explanation:

if b and c are complementary that means b + c = 90

b + 47 = 90

b = 43

since a and b are congruent they are equal

if b = 43 then a = 43

Answer:

answer is A

Step-by-step explanation:

p: shape is a triangle

q: a shape has four sides

The statement that has to be true is p v q.

Logic is a means of expression which involves the use of symbols to represent statements.

Since the shape has to be a rectangle then it follows that the statement that has to be true is p v q.

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The second derivative of v with respect to t, denoted as d²v/dt², is equal to 4

The second derivative of v with respect to t, we will differentiate v twice.

v = 2t² + 7t + 11

First, let's find the first derivative of v with respect to t (dv/dt):

dv/dt = d/dt (2t² + 7t + 11)

Using the power rule of differentiation, we differentiate each term separately:

dv/dt = 2(2t) + 7(1) + 0

dv/dt = 4t + 7

Now, let's find the second derivative of v with respect to t (d²v/dt²):

d²v/dt² = d/dt (4t + 7)

Again, using the power rule of differentiation, we differentiate each term separately:

d²v/dt² = 4(1) + 0

d²v/dt² = 4

Therefore, the second derivative of v with respect to t, denoted as d²v/dt², is equal to 4.

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Answer:

Step-by-step explanation:

There are the same angles in similar triangles but sides not necessarily.

In congruent triangles there are the same angles and the same sides.

Reflection, rotation or translation changes only position of triangle or mirrors it. Doesn't change the size, so the created triangle is congruent.

Answer: 5280 miles

Step-by-step explanation:

Answer:

sqrt65, or 8.06225775

Step-by-step explanation:

390/6=65

sqrt65=8.06225775

1. The number of visitors attending the park when the admission fee is $20.00 is 8,000.

2. The equilibrium price (P*) is $5 and the equilibrium quantity (Q*) is 15.

1. To find the number of visitors attending the park when the admission fee is $20.00, we substitute P = $20.00 into the demand equation Q = 10,000 - 100P:

Q = 10,000 - 100(20)

Q = 10,000 - 2,000

Q = 8,000

Therefore, the number of visitors attending the park when the admission fee is $20.00 is 8,000. The correct answer is option D.

2. To find the equilibrium price (P*) and quantity (Q*) for vanilla ice cream, we set the demand equation equal to the supply equation and solve for P:

20 - p = 10 + p

Combine like terms:

2p = 10

Divide both sides by 2:

p = 5

To find the equilibrium quantity, substitute the value of p into either the demand or supply equation:

Q = 20 - p

Q = 20 - 5

Q = 15

Therefore, the equilibrium price (P*) is $5 and the equilibrium quantity (Q*) is 15. The correct answer is option B.

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Answer:

the correct answer would be 2r+2

Step-by-step explanation:

8r-6r=2r

7-5=2

Answer:

2r + 2

Step-by-step explanation:

8r+7−6r−5

Terms with r are like terms and can be combined together.

Terms with no variable are like terms and can be combined together.

Terms with r and terms with no r are not like terms and cannot be combined together.

8r + 7 - 6r - 5 =

= 8r - 6r + 7 - 5

= 2r + 2

The Wald test is a statistical test that can be used to test the significance of a group of coefficients in a multiple regression model.

The test statistic is calculated as the ratio of the estimated coefficient to its standard error. If the test statistic is significant, then the null hypothesis that the coefficient is equal to zero can be rejected.

Suppose we have a multiple regression model with three independent variables: age, gender, and education. We want to test the hypothesis that the coefficients for age and education are both equal to zero. The Wald test statistic would be calculated as follows:

Test statistic = (Estimated coefficient for age) / (Standard error of estimated coefficient for age) + (Estimated coefficient for education) / (Standard error of estimated coefficient for education)

If the test statistic is significant, then we can reject the null hypothesis that the coefficients for age and education are both equal to zero. This would mean that there is evidence that age and education are both associated with the dependent variable.

The Wald test is a powerful tool that can be used to test the significance of a group of coefficients in a multiple regression model. However, it is important to note that the test statistic is only valid if the assumptions of the multiple regression model are met. If the assumptions are not met, then the p-value of the Wald test may be inaccurate.

Here are some of the assumptions of the multiple regression model:

* The independent variables are independent of each other.

* The dependent variable is normally distributed.

* The errors are normally distributed.

* The errors have constant variance.

If any of these assumptions are not met, then the Wald test may not be accurate.

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Answer:

c) 74.052 in Expanded form with decimal form =

7 × 10 + 4 × 1 + 0 × 0.1 + 5 × 0.01 + 2 × 0.001

b) 74.052 in Expanded form with fractions =

7 × 10 + 4 × 1 + 0 × 1/10 + 5 × 1/100 + 2 × 1/1000

Step-by-step explanation:

We are given the number 74.052

The place value of each of the numbers is given as follows:

7 = Tens

4 = units

0 = Tenth

5 = Hundredth

2 = Thousandth

We are asked to write 74.052 in Expanded form of Decimals and fractions.

74.052 in Expanded form with decimal form =

7 × 10 + 4 × 1 + 0 × 0.1 + 5 × 0.01 + 2 × 0.001

74.052 in Expanded form with fractions =

7 × 10 + 4 × 1 + 0 × 1/10 + 5 × 1/100 + 2 × 1/1000

Here, we are required to write the number 74.052 in expanded form using fractions and decimals to express the decimal place value units.

The answer in fractions is;

(7×10) + (4×1) + (0×1/10) + (5×1/100) + ( 2× 1/1000)

The answer in decimal form is;

(7×10) + (4×1) + (0×0.1) + (5×0.01) + ( 2× 0.001).

From the number:

(a) Therefore, to write the number in expanded form using fractions;

(7×10) + (4×1) + (0×1/10) + (5×1/100) + ( 2× 1/1000)

(b) Therefore, to write the number in expanded form using decimals;

(7×10) + (4×1) + (0×0.1) + (5×0.01) + ( 2× 0.001).

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The solution to the given system of equations in vector notation is x = [1, -1, 2, 1, 0].

To solve the system of equations, we can represent the equations in matrix form, as A * x = b, where A is the coefficient matrix, x is the vector of variables, and b is the vector on the right-hand side.

The coefficient matrix A can be constructed by taking the coefficients of the variables from the left-hand side of the equations. The vector b contains the constant terms.

In this case, the coefficient matrix A and the vector b are:

A = [[1, 5, 4, 3, 6],

[1, 6, 6, 6, 7],

[6, 7, 8, 10, 8],

[1, 6, 6, 7, 7]]

b = [2, 6, 12, 8]

To find the solution, we can use matrix algebra to solve the equation A * x = b. We can multiply both sides by the inverse of A to isolate x:

x = A^(-1)  b

Calculating the inverse of A and multiplying it by b, we find that the solution is x = [1, -1, 2, 1, 0].

Therefore, the solution to the given system of equations in vector notation is x = [1, -1, 2, 1, 0].

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Answer:

8 and 72 hundreths

Step-by-step explanation:

it's not the first one for sure

i think 8 and 72 hundreths?? i could be wrong

Answer:

x=-3

Step-by-step explanation:

2 x - 3 y = -12.

4 x + y =  -10.

The Answer is:

X= -3

8/24=4/12=2/6=1/3

notice the pattern

---

hope it helps

sorry if it doesn't

the probability that exactly 2 chips out of the random sample of 3 chips are defective is 42/3375.

To calculate the probability that exactly 2 chips out of a random sample of 3 chips are defective, we can use the binomial probability formula.

The binomial probability formula is given by:

P(X = x) = C(n, x) * pˣ * q⁽ⁿ⁻ˣ⁾

Where:

P(X = k) is the probability of exactly k successes (in this case, defective chips)

n is the sample size (in this case, 3 chips)

k is the number of successes (defective chips)

p is the probability of success (probability of a chip being defective)

q is the probability of failure (probability of a chip not being defective)

C(n, k) is the number of combinations of n items taken k at a time

Given:

n = 3 (sample size)

k = 2 (exactly 2 defective chips)

p = 10/150 = 1/15 (probability of a chip being defective)

q = 1 - p = 14/15 (probability of a chip not being defective)

Now, let's calculate the probability:

P(X = 2) = C(3, 2) * (1/15)² * (14/15)⁽³⁻²⁾

C(3, 2) = 3! / (2!(3-2)!) = 3

P(X = 2) = 3 * (1/15)² * (14/15)

P(X = 2) = 3 * (1/225) * (14/15)

P(X = 2) = 42/3375

So, the probability that exactly 2 chips out of the random sample of 3 chips are defective is 42/3375.

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Answer:

She will ride 13 miles in one hour

Step-by-step explanation:

(8 2/3) / (2/3) = x / 1....8 2/3 miles to 2/3 hr = x miles to 1 hr

cross multiply

(2/3)(x) = (8 2/3)(1)

2/3x = 26/3

x = 26/3 * 3/2

x = 26/2...which equals 13....she will ride 13 miles in 1 hr

Answer:

c) angle 4

Step-by-step explanation:

correspond is same spot but diagonally.

Answer:

2/1

Step-by-step explanation:

you just have to put the number over 1

Answer:

The answer is 24

Step-by-step explanation:

6×4 =24

We can also further simplify it by everything down.

we could use

(3×4) + (3×4)

12 + 12

=24

and we can do the same for

(6×2) + (6×2)

12 + 12

= 24

Hope this helps!

Answer:

4 · 6 = 24

➲ I hope this helps.

Based on the above results, there is no difference between the microscope brands.

We are given that;

\(H_0: mu_D = 0; H_a: mu_D notequalto 0 H_0: mu_D greaterthanorequalto 0; H_A: mu_D < 0 H_0: mu_D lessthanorequalto 0; H_A: mu_D > 0\)

Now,

The null hypothesis is that the mean difference between Brand A number of defects and the Brand B number of defects is equal to zero. The alternative hypothesis is that the mean difference between Brand A number of defects and the Brand B number of defects is not equal to zero.

The decision rule for a two-tailed test at the 5% significance level is to reject the null hypothesis if the absolute value of the test statistic is greater than or equal to 2.571.

The value of the test statistic is -2.236. Since the absolute value of the test statistic is less than 2.571, we fail to reject the null hypothesis.

So, based on the above results, there is not enough evidence to conclude that there is a difference between the microscope brands.

Therefore, by Statistics the answer will be there is no difference between Brand A number of defects and the Brand B.

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Answer:

19

Step-by-step explanation:

Answer:

The answer is 19. love your henata pfp btw-

Answer:

1.89813 × 1027 kilograms

Step-by-step explanation:

If so please sorry

Option B "Perpendicular Lines"  is correct.

"Perpendicular Lines" are two lines that intersect at a right angle, forming 90-degree angles between them. Thus, Option B holds the truth.

Perpendicular lines are a fundamental concept in geometry and they are defined as two lines that meet at a right angle; forming four 90-degree angles. This means that the slopes of the two lines are negative reciprocals of each other. Perpendicular lines are important in many areas of mathematics and physics because they allow us to calculate angles, distances and other geometric properties.

Perpendicular lines are useful in many practical applications such as: architecture, engineering and construction. By understanding the properties of perpendicular lines, one can better understand the geometry of our world and solve real-world problems.

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The volume of the given equation is 20.25 cubic units.

The given equation is z = xy bounded by a cylinder x² + y² = 9 and x ≥ 0 and y ≥ 0.

We are going to find the volume of the given equation. Let's follow these steps:

Step 1: Solve for x and y.

The given equation is x² + y² = 9. We can solve it for x and y as:

y = √(9 - x²)and

x = √(9 - y²)

Step 2: Find the bounds for x and y. To get the bounds for x and y, we need to use the given condition that x ≥ 0 and y ≥ 0. Therefore, the bounds for x and y are:[0, 3] and [0, 3], respectively.

Step 3: Find the integral of the equation. The volume of the equation is given by

V = ∫∫z dA

where dA = dxdy

Since z = xy,

we have

V = ∫∫xy dxdy

The bounds of the integral are: [0, 3] for x[0, 3] for y

Therefore, V = ∫∫xy dxdy= ∫₀³ ∫₀³ xy dxdy= ∫₀³ [(y/2)x²]₀³ dy= ∫₀³ (9/2)y dy= [9/4 y²]₀³= (9/4)(3²)= 20.25 cubic units

Therefore, the volume of the given equation is 20.25 cubic units.

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Answer:

A

Step-by-step explanation:

if it's not I'm sorry but that is the most logical answer:)

The observed value of student's t statistic rounded to the nearest hundredth is 1.72.

The stated data is-

Thus,

Degree of freedom = n -1

Df = 22-1

Df = 21

As, the significance level is 5% then test is right tailed.

So,

Alpha value = 0.05

Now,

For alpha value = 0.05 and degree of freedom = 21.

t- critical value = 1.721 (from the t-statiscts table).

Thus, the observed value of student's t statistic rounded to the nearest hundredth is 1.72.

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Answer:

SA = 94 ft²

Step-by-step explanation:

To find the surface area of a rectangular prism, you can use the equation:

SA = 2 ( wl + hl + hw )

SA = surface area of rectangular prism

l = length

w = width

h = height

In the image, we are given the following information:

l = 4

w = 5

h = 3

Now, let's plug in the information given to us to solve for surface area:

SA = 2 ( wl + hl + hw)

SA = 2 ( 5(4) + 3(4) + 3(5) )

SA = 2 ( 20 + 12 + 15 )

SA = 2 ( 47 )

SA = 94 ft²

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The solution of the given equations are; x = -10.5 and y = 8.25

A system of equations is two or more equations that can be solved to get a unique solution. the power of the equation must be in one degree.

We are given that the system of equation are;

20y−25x=140

y+5/4x=-5

Therefore, solving the equations;

y = -5/4x -5

Substitute;

20y−25x=140

20(-5/4x -5)−25x = 140

-25 - 100 - 25x = 140

-125 - 25x = 140

-25x = 140 + 125

x = -10.5

Then y = -5/4x -5

y = 8.25

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