z^-11 times z^-15. thanks

X in an example​ of stochastic variable.

What is meant by stochastic variables?

Typically, a random (or stochastic) variable is defined as a variable that can assume more than one value due to chance.

The correct answers are: (a) stochastic variable: By stochastic variable we mean a variable (here X: the weight of students) whose values are subject to variation due to chance.

Here since X is the weight of the children sampled, hence X will vary along with change in the sampling units which gets selected by chance.

Hence X for a sample A and X value for a different sample B will be different. So the values of X vary due to chance ( chance takes part in the selecton of the sample). So X is a stochastic variable.

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The complete question is -

Researchers are concerned that the weight of the average American school child is increasing implying, among other things, that children's clothing should be manufactured and marketed in larger sizes. If X is the weight of school children sampled in a nationwide study, then X is an example of a stochastic variable. a parameter. a categorical variable. a continuous variable.

Answer:

$2.95

Step-by-step explanation:

math

The cost of each binder is $2.95.

Division is one of the operation in mathematics where number is divided  into equal parts as that of a definite number.

Given that,

Deborah bought 3 identical binders.

He received $1.15 change from $10.00.

Cost for 3 binders = $10.00 - $1.15

                              = $8.85

Since the 3 binders are identical, each costs the same.

Cost of each binder = $8.85 / 3

                                 = $2.95

Hence the cost of each binder is $2.95.

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Based on the given information, chicken is likely an inferior good. When Vincent's income increased, the family's consumption of chicken decreased from 10 pounds per week to 8 pounds per week. This inverse relationship between income and quantity consumed suggests that chicken is considered an inferior good.

An inferior good is a type of good for which demand decreases as income increases. In this case, when Vincent's income increased, the family's consumption of chicken decreased. This implies that chicken is not a normal good, where demand typically increases with higher income. Instead, chicken is considered an inferior good, as the decrease in income leads to an increase in the quantity of chicken consumed.

The concept of inferior goods is often observed when individuals and households can afford to consume higher-quality or more desirable alternatives as their income increases. In the case of chicken, as income rises, individuals may shift their consumption towards other types of meat or protein sources, resulting in a decrease in the demand for chicken.

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Answer:

It's 8.46 cause the preceding digit to 4=5

Hope it helps

Have a good day

Answer:

8.456 rounded to the nearest tenth = 8.5

Step-by-step explanation:

To round 8.456 to the nearest tenth consider the hundredths’ value of 8.456, which is 5 and equal or more than 5. Therefore, the tenths value of 8.456 increases by 1 to 5.

Answer:

The items can be equally shared between 45 students.

Each student will get 3 pens, 5 books and 7 copies.

Step-by-step explanation:

We have to find the GCF (Greatest common factor) of 135 , 225 and 315.

          135 = 5 * 3 * 3 * 3 = 45 * 3

          225 =  5 * 5 * 3 * 3 = 45 * 5

          315 =  5 * 3 * 3 * 7 =  45 * 7

GCF = 5 * 9 = 45

The items can be equally shared between 45 students.

Each student will get 3 pens, 5 books and 7 copies.

Answer:

64%

Step-by-step explanation:

36% like everything else, leaving a 64%

Answer: 64%

Step-by-step explanation:

9 + 6 + 15 + 6 =36

popcorn = 100- 36% = 64%

64/100 × 84/1

1.a The probability of throwing at most 2 heads in 5 throws is more probable.

1.b A total of 2^4 = 16 outcomes.

1.c The probability of selecting a black ball, a red ball, and then another black ball is 5/56.

1a. Probability of throwing exactly 15 heads in 20 throws

Probability of getting a head is p = 0.65, and the probability of getting tails is q = 1 - 0.65 = 0.35.

Let X be the random variable which counts the number of heads in 20 throws.

Then X follows the binomial distribution B(20, 0.65).P(X = 15) = 20C15 * 0.65^15 * 0.35^5= 0.16

Probability of throwing at most 2 heads in 5 throws

Let Y be the random variable which counts the number of heads in 5 throws.

Then Y follows the binomial distribution B(5, 0.65).P(Y ≤ 2) = P(Y = 0) + P(Y = 1) + P(Y = 2)

                                                                                                  = 0.01 + 0.08 + 0.25

                                                                                                  = 0.34

Therefore, the probability of throwing at most 2 heads in 5 throws is more probable.

1b. Suppose we flip a fair coin 4 times.

For what combination(s) do there exist exactly 3 permutations?

There are a total of 2^4 = 16 outcomes.

The combinations that exist in exactly 3 permutations are HTTH, HTHT, THHT, THTH, and HHTT.

1c. Probability of selecting a black ball, a red ball, and then another black ball We want to compute the probability of pulling out 3 balls, without replacement, from a box with 5 red balls and 3 black balls.

The total number of ways of pulling out 3 balls is 8C3.

The probability of pulling out a black ball on the first draw is 3/8.

The probability of pulling out a red ball on the second draw is 5/7.

The probability of pulling out another black ball on the third draw is 2/6 = 1/3.

So, the required probability is (3/8) * (5/7) * (1/3) = 5/56.

Therefore, the probability of selecting a black ball, a red ball, and then another black ball is 5/56.

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Answer:

b. 156

Step-by-step explanation:

A "perfect square" is the product of an integer that is being multiplied by itself.

Choice a, 625, is a perfect square because it is the product of 25 multiplied by itself.

Choice b, 156, is not a perfect square because you cannot find any integer that can be multiplied by itself that will result in 156 as a product. Therefore, this is the correct answer.

Choice c, 196, is a perfect square because it is the product of 14 multiplied by itself.

Answer:

B. 1 1/7

Step-by-step explanation:

Pls, choose me as brainliest!

Answer:

Let the unknown number be x ;

\(2(x) +31\\=2x+31\)

Step-by-step explanation:

Answer:

  7

Step-by-step explanation:

You want the integer length of the shortest third side that will form a triangle with sides 12 and 18.

The triangle inequality requires the sum of any two sides exceed the measure of the third side. If x is the short side, we want ...

  x +12 > 18

  x > 6 . . . . . . subtract 12

The smallest integer greater than 6 is 7.

The third side must be at least 7 units long.

__

Additional comment

Some authors write the triangle inequality as a+b≥c. If you use that version, then the shortest side can be 6 units. The resulting "triangle" will have zero area, and will look like a line segment 18 units long.

Answer:

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

Step-by-step explanation:

Multiply the coefficient of the first term by the constant   4 • -7 = -28

Find two factors of  -28  whose sum equals the coefficient of the middle term, which is   -12

(  -28    +    1    =    -27  

     -14    +    2    =    -12  )

Rewrite the polynomial splitting the middle term using the two factors found in step 2 above,  -14  and  2  

                    4x2 - 14x + 2x - 7

Add up the first 2 terms, pulling out like factors :

                   2x • (2x-7)

             Add up the last 2 terms, pulling out common factors :

                    1 • (2x-7)

Add up the four terms :

                   (2x+1)  •  (2x-7)

Answer:

A=h×b/2

This is formula of finding area of triangle

I DIDNT UNDERSTAND UR QUESTION

HEIGHT IS NOT MENTIONED AND BASE IS NOT MENTIONED.. JUST 4 OPTION TYPE NUMBERS ARE THERE... CAN U WRITE THE QUESTION PROPERLY

The inverse of the function is \(f^{(-1)\)(x) = (x - 14)/10.

To find the inverse function of f(x) = 10x + 14, we'll interchange x and y and solve for y.

Step 1: Replace f(x) with y:

y = 10x + 14

Step 2: Swap x and y:

x = 10y + 14

Step 3: Solve for y:

Subtract 14 from both sides:

x - 14 = 10y

Divide both sides by 10:

(y = (x - 14)/10

Now, we have the inverse function of f(x):

\(f^{(-1)\)(x) = (x - 14)/10

Thus, the inverse of the function is \(f^{(-1)\)(x) = (x - 14)/10.

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C

The mistake the arrangers made is in the second inequality. They considered the number of caps to be bought should be at least 5 times greater than the number of blouses, not the other way around. The correct inequality should be C

The correct answer is D) The first inequality should be s + h ≤ 1800.

The organizers made an error in the first inequality. The given inequality 10s + 8h ≤ 1800 represents the total cost of buying shirts (10s) and hats (8h) should be less than or equal to $1800. However, this does not take into account the fact that the organizers want to buy at least 5 times as many shirts as hats, as indicated by the second inequality h ≥ 5s.

The correct way to represent this constraint is by using the equation s + h ≤ 1800, which ensures that the total number of shirts and hats purchased does not exceed $1800 in cost. This is because the organizers want to make sure that the total cost of shirts and hats combined does not exceed the budget of $1800.

A carton of milk with 4 cups left means there are 4 servings remaining, assuming each serving is one cup.

If a carton of milk has 4 cups left and each serving of milk is one cup, it means that there are 4 servings of milk left in the carton.

To determine the number of servings, we can divide the total number of cups by the number of cups per serving. In this case, we divide 4 cups by 1 cup per serving:4 cups ÷ 1 cup/serving = 4 servings

Therefore, there are 4 servings of milk left in the carton.

Alternatively, we can think of it this way: if each serving of milk is one cup, and there are 4 cups left in the carton, we can simply say that there are 4 servings remaining.

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To find the number of three-letter initials with none of the letters repeated, we need to consider the number of choices for each position in the initials.

To determine the number of three-letter initials with none of the letters repeated, we can analyze each position in the initials. For the first letter, we have 26 choices since there are 26 letters in the English alphabet.

After selecting the first letter, for the second letter, we have 25 choices remaining since we cannot repeat the letter used in the first position. Similarly, for the third letter, we have 24 choices remaining since we cannot repeat either of the previous letters.

Therefore, the total number of three-letter initials with none of the letters repeated can be found by multiplying the number of choices for each position: 26 * 25 * 24 = 15,600. Hence, there are 15,600 different three-letter initials that people can have if none of the letters are repeated.

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The particular solution to the differential equation dy/dx = 3x - 2 that satisfies the initial condition y(2) = -2 is:

y = (3/2)x^2 - 2x - 7.

Given dy/dx=3x−2 and y(2)=−2, we can solve for y.

Using the given information, we can integrate both sides for x to get the following:

dy/dx = 3x - 2  ⇒ ∫ dy = ∫ (3x - 2) dx

Integrating both sides of the equation to x, we get

y = (3/2)x^2 - 2x + C, where C is an arbitrary constant.

To find the value of C, we can use the initial condition y(2) = -2, which means that when x = 2, y = -2.

Substituting these values in the equation, we get:

-2 = (3/2)(2^2) - 2(2) + C

 ⇒ C = -7

Putting this value of C in the equation for y, we get:

y = (3/2)x^2 - 2x - 7

Therefore, the solution to the differential equation dy/dx = 3x - 2 subject to the initial condition y(2) = -2 is y = (3/2)x^2 - 2x - 7.

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Answer:

0.85

Step-by-step explanation:

Answer:0.83

Step-by-step explanation:

Yes , SAS (Side-Angle-Side) is a second Congruence postulate to prove triangle congruence by showing that two sides and their included angles are congruent.

Side-Angle-Side is the rule used to prove whether a given set of triangles are congruent. The SAS rule states: Triangles are congruent if two sides and an included angle of a triangle are equal to two sides and an included angle of another triangle. An included angle is the angle formed by two given sides.. For example : let's us consider two triangles ∆SQR and ∆TSR ,

In above given figure, sides

RS = RS ( common side)

QS = ST ( S divides QT in two equal parts) and angle between QS and SR equal to angle between SR and ST i.e. ∠QSR = ∠RST = 90° (right angle ) and it is included angle . So, by SAS Congruence rule, both of triangles are congruent. Hence, Δ ABC ≅ Δ PQR.

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Answer:

subtract 2x from both sides

divide both sides by 3

In y = mx + b form (slope intercept form), the slope will be in the m position and the y int will be in the b position

as u can see, the number in the m position (the slope) = -2/3

and the number in the b position (the y int) = 490 or (0,490)

Step-by-step explanation:

Answer:

Sal will have at least 5 dollars for every meal.

Step-by-step explanation:

Sal will have 5 dollars for every meal because, In the sentence, It says, The profits are the same. Each thing costs $3 and $2 for each meal which is five.

Explaning process:

divide 1,593 and 5.

Sal will use 6 dollars for every day and 1593 dollars for each month. For six months, the cost will be 9558.

Step-by-step differences and similars.

The first graph says find the  slope-intercept method

y=6.

The more simple way to do this is the one above

Answer:

dont worry im here to help!

Step-by-step explanation:

THE ANSWER IS C.
50x is 50 x the amount of hours worked and the amount of hours worked is 4.1 hours. every hour is 50$ charged and then it was 45$ charge for the worker to come in

50 x 4.1 = 205
205 + 45 = 250

The equation to determine the number of hours worked by the plumber is C. 50x + 45 = 250; x = 4.1 hours

An equation is an expression that shows the relationship between two or more numbers and variables.

Given that the plumber charges $45 to come to his house and $50 for every hour they work. If the plumber charges Jerald a total of $250, then we have;

Let x be the amount of hours worked and the amount of hours worked is 4.1 hours.

Every hour is 50$ charged and then it was 45$ charge for the worker.

Therefore, the equation would be;

50x + 45 = 250

TO check;

50 x 4.1 = 205

205 + 45 = 250

Hence, the equation to determine the number of hours worked by the plumber is C. 50x + 45 = 250; x = 4.1 hours

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The sampling process used on dollar street is stratified sampling.

Given,

Use of dollar street;

Dollar street offers a fresh perspective on families all throughout the world. Every family is arranged down a street, with the wealthiest household on the right and the lowest on the left. Each family's earnings are expressed in US dollars.

Here,

Stratified sampling;

To complete the sampling process, stratified sampling is a form of sampling technique in which the entire population is divided into smaller groups or strata.

Therefore,

Stratified sampling is used in dollar street for sampling process.

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Answer:

Sin X=Cos Y

Step-by-step explanation:

Objective: Understand trigonometric relations such that

Cosine and Sine are similar to complementary angles that if X+Y are complementary angles,

Cos X= Sin Y and Cos Y= Sin X

The equation of the plane passing through the points \((0, 6, 6), (6, 0, 6), and (6, 6, 0)\) is \(36x + 36y + 36z = 432\).

To find the equation of the plane passing through the points \((0, 6, 6), (6, 0, 6), and (6, 6, 0)\), we can use the point-normal form of the equation of a plane.

Step 1: Find two vectors in the plane.

Let's find two vectors by taking the differences between the given points:

Vector v₁ = \((6, 0, 6) - (0, 6, 6) = (6, -6, 0)\)

Vector v₂ = \((6, 6, 0) - (0, 6, 6) = (6, 0, -6)\)

Step 2: Find the normal vector.

The normal vector is perpendicular to both v₁ and v₂. We can find it by taking their cross product:

Normal vector n = v₁ \(\times\) v₂ = \((6, -6, 0) \times (6, 0, -6) = (36, 36, 36)\)

Step 3: Write the equation of the plane.

Using the point-normal form, we can choose any point on the plane (let's use the first given point, \((0, 6, 6)\)), and write the equation as:

n · (x, y, z) = n · (0, 6, 6)

Step 4: Simplify the equation.

Substituting the values of n and the chosen point, we have:

(36, 36, 36) · (x, y, z) = (36, 36, 36) · (0, 6, 6)

Simplifying further:

\(36x + 36y + 36z = 0 + 216 + 216\\36x + 36y + 36z = 432\)

Therefore, the equation of the plane passing through the given points is:

\(36x + 36y + 36z = 432\)

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If the expected number of inches of rain on saturday is 2 and the expected number of inches on sunday is 1, the expected number of inches of rainfall over the weekend is 7/3.

To solve the problem, we need to use the concept of conditional probability. Let's denote the total rainfall over the weekend by X, and the rainfall on Sunday by Y. We know that E(Y) = 1 and that if there is no rain on Saturday, Y = 0. Therefore, we need to calculate the conditional expectation of X given that there is no rain on Saturday.

If there is rain on Saturday, the expected value of X is 2+1 = 3. If there is no rain on Saturday, the expected value of X is just E(Y) = 1. We can write this as:

E(X | no rain on Saturday) = E(X | rain on Saturday) * P(rain on Saturday) + E(Y | no rain on Saturday) * P(no rain on Saturday)

We know that P(no rain on Saturday) = 1/3 (since the probability of rain on Saturday is not given). Therefore:

E(X | no rain on Saturday) = (3 * P(rain on Saturday)) + (1 * (1 - P(rain on Saturday)))

E(X | no rain on Saturday) = 2P(rain on Saturday) + 1

To find the expected value of X over the weekend, we need to take the average of the expected values with and without rain on Saturday:

E(X) = E(X | rain on Saturday) * P(rain on Saturday) + E(X | no rain on Saturday) * P(no rain on Saturday)

E(X) = (3 * P(rain on Saturday)) + ((2P(rain on Saturday) + 1) * (1 - P(rain on Saturday)))

E(X) = 2P(rain on Saturday) + 1

E(X) = 2 * 2/3 +1 = 7/3

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Answer:

50

Step-by-step explanation:

4 x 10 = 40 and 2 x 5 = 10 so add them together

Answer:

possible answers are shown in picture.

Step-by-step explanation: