WILL GIVE YOU 85 POINTS IF YOU ANSWER THIS QUESTION ASAP
the accompanying table shows the number of math problems completed correctly by students on a recent test. what is the average number of problems completed correctly by all students?

Answer:

2nd one

Step-by-step explanation:

Just the 2nd one

Answer:

Step-by-step explanation:

Answer:

Step-by-step explanation:

negative 5 is less then -3 is the statement. so saying that -3 is less than five, is false.

remember your number line.

-5_-4_-3_-2_-1_0_1_2_3_4_5_6

five sure is to the left of three, and saying that three is to the right of five is the exact same thing.

The  transition probability matrix: P(X0 = 0) = P(X0 =1) = 1/4 \(E[X3] = 0 * π3(0) + 1 * π3(1) + 2 * π3(2)\)

A Markov chain

\( {Xn : n ≥ 0}\) with three states 0, 1, 2 has the given transition probability matrix:
P =\( | 0   1/3  2/3 |\)
   \(  | 1/3 0   2/3 |\)
   \(  | 2/3 1/3 0   |\)
Additionally, the initial probabilities are provided as

P(X0 = 0) = P(X0 = 1) = 1/4. Therefore, the initial probability distribution vector can be represented as:
\(π0 = | 1/4 |\)
      \(  | 1/4 |\)
      \(  | 1/2 |\)
To find E[X3], we need to first find the probability distribution at the third step, which can be computed by multiplying the initial probability distribution vector with the transition matrix raised to the power of 3:
\(π3 = π0 * P^3\)
After computing π3, we can find E[X3] by calculating the expected value:
\(E[X3] = 0 * π3(0) + 1 * π3(1) + 2 * π3(2)\)

for such more questions on probability

https://brainly.com/question/24756209

#SPJ11

Answer:

Hey there !

Solution:

Let the number be x

=> x + 2x² = 10

=> 2x² + x - 10 = 0

Factorising the quadratic equation we get,

=> 2x² + 5x - 4x - 10 = 0

=> x ( 2x + 5 ) -2 ( 2x + 5 ) = 0

=> ( x - 2 ) ( 2x + 5 ) = 0

=> x = 2, -5/2

Since x is a whole number, -5 / 2 wont be applicable.

Hence x = 2.

Hence the number is 2.

Hope my answer helped !

Step-by-step explanation:

The volume of the given figure is 469.7 cm³.

Volume is the amount of space in a certain 3D object.

To calculate the volume of the figure, we use the formula below

Formula:

Where:

From the question,

Given:

Substitute these values into equation 1

Hence, the volume is 469.7 cm³.

Learn more about volume here: https://brainly.com/question/1972490

#SPJ1

The measures of dispersion mean , median , mode and range of the data are 3.79, 2, 2 and 9.75 respectively

The mean is the ratio of the sum of all the values and the number of values in the dataset .

The mean = (1 + 0.8 + 2 + 2.5 + 1.5 + 5 + 10 + 5.1 + 3 + 2.25 + 0.5 + 0.25 + 1.8 + 4.1 + 2 + 2 + 7) / 14 = 3.79

This is the middle value of the distribution after it has been rearranged in order of magnitude.

Rearranged data : 0.25, 0.5, 1, 1.5, 1.8, 2, 2, 2, 2.25, 3, 4.1, 5, 5.1, 7, 10

median = 2

This is the most frequently occurring value in the dataset . The modal value here is 2 with a frequency of 4

Mode = 2

This is the difference between the maximum and minimum values

Range = 10 - 0.25 = 9.75

Therefore, the range of the data is 9.75

Learn more on measures of dispersion ; https://brainly.com/question/5001250

#SPJ1

Answer:

well you just get 32

Step-by-step explanation:

but i divide 16 divide 5 and got 3.2 so it might be an extra .2 stickers

Answer:

B

Step-by-step explanation:

Answer:

For the first one the value of X will be 3 and the second one the value of X will be 5.5

Step-by-step explanation:

All you're really doing for expressions like this are dividing the whole number into the number with the variable. for example, i took 5 and divided it into 15x which gave me 3 so the X will equal 3. Hope I helped

Answer:

it is the second one

Step-by-step explanation:

The statement "An integer multiplied by an integer is an integer" is true.

An integer is a whole number that can be positive, negative, or zero. When you multiply two integers, the result is also an integer. For example, if you multiply 3 and 4, you get 12, which is an integer.

This property is one of the defining characteristics of the integers. It means that the integers form a closed set under multiplication. In other words, when you multiply any two integers, you always get another integer. This is not true for all numbers, such as fractions or decimals.

The whole numbers are the numbers without fractions and it is a collection of positive integers and zero. It is represented by the symbol “W” and the set of numbers are {0, 1, 2, 3, 4, 5, 6, 7, 8, 9,……………}.

Learn more about integer here brainly.com/question/15276410

#SPJ4

When two angles sum up to 90° they are called complementary angles.

Since the sum of angle 1 and angle 2 = 90°, they will be called each other's complements.

Thus, the angle pair is called complementary angles.

▪︎Therefore, the correct option is (C) complementary

Answer:

21

Step-by-step explanation:

all you have to do is get 70% of 30

70% of 30 is 21

Answer:

21 employees

Step-by-step explanation:

70% of 30 is 21

Since percentages are always over 100 we get 70/100

Start by multiplying 70/100 with 30:

(70/100)*30

and

(70*30)/100 =

Which gives you

21

Step-by-step explanation:

360 - 126 =234

234 ÷3x

x = 78

The angle formed by a tangent on a circle with a radius is always 90 degrees thus the measure of x for the given circle and tangents is 18.

The tangent of a circle is a line that intersects the circle at the periphery of the circle.

If you draw a line that goes through the center to the tangent touching point then it will give you a 90-degree angle.

As per the given circle and two tangents.

Since The angle formed by a tangent on a circle with a radius is always 90°.

Therefore, the sum of the other two angles 3x and 126° will be 180°.

3x + 126 = 180

3x = 54

x = 18

Hence "The angle formed by a tangent on a circle with a radius is always 90 degrees thus the measure of x for the given circle and tangents is 18".

For more information about the tangent of the circle,

brainly.com/question/23265136

#SPJ2

If Galena had $16 in her bank and $28 in her wallet. after her aunt gave her some more money, she had $60. So, Galena's aunt gave her $16.

To solve the problem, let's break it down step by step using algebra. Let x represent the amount of money Galena's aunt gave her. According to the information given, Galena received $16 and $28 from her parents. We can write this as:

$16 + $28 + x = $60

To find the amount Galena's aunt gave her, we need to isolate the variable x. We can do this by simplifying the equation:

$44 + x = $60

Next, we want to isolate x on one side of the equation. We can do this by subtracting $44 from both sides:

x = $60 - $44

Simplifying further, we have:

x = $16

So, Galena's aunt gave her $16.

You can learn more about algebra at: brainly.com/question/27211906

#SPJ11

Answer:

13

Step-by-step explanation:

13x75000=975000

Check for reasonableness...

975000/75000=13

So the answer is 13 gallons.

P.S. There will still be 25,000 drops left, which is 1/3 of a gallon.

Answer:

2 imaginary solutions

Step-by-step explanation:

The expected value in a binomial situation with n = 18 and π = 0.60 is E(X) = np = 18 * 0.60 = 10.8.

In a binomial situation, the expected value, denoted as E(X), represents the average or mean outcome of a random variable X. It is calculated by multiplying the number of trials, denoted as n, by the probability of success for each trial, denoted as π.

In this case, we are given n = 18 and π = 0.60. To find the expected value, we multiply the number of trials, 18, by the probability of success, 0.60.

n = 18 (number of trials)

π = 0.60 (probability of success for each trial)

To find the expected value:

E(X) = np

Substitute the given values:

E(X) = 18 * 0.60

Calculate the expected value:

E(X) = 10.8

learn more about binomial here:

https://brainly.com/question/31049218

#SPJ4

Answer:

21) 86°

22) 23°

Step-by-step explanation:

21) Since Angle ADC is 135,

7x + (11x+9) = 135

18x + 9 = 135

18x = 126

x = 7

Since we have to find Angle BDC,

Substitute 'x = 7' into '11x+9':

11(7) + 9

= 77 + 9

= 86

22) Since Angle NRQ is 78,

(8x+7) + (4x-1) = 78

12x + 6 = 78

12x = 72

x = 6

Substituting 'x = 6' into '4x-1'

4(6) - 1

= 24 - 1

= 23

Feel free to mark this as brainliest! :D

Answer:

h(-3) = -14

h(0) = -2

h(2) = 6

h(4) = 14

h(5) = 18

Step-by-step explanation:

h(x) = 4x - 2

x=-3

h(-3) = 4(-3) - 2

h(-3) = -12 - 2

h(-3) = -14

x=0

h(0) = 4(0) - 2

h(0) = 0 - 2

h(0) = -2

x=2

h(2) = 4(2) - 2

h(2) = 8 - 2

h(2) = 6

x=4

h(4) = 4(4) - 2

h(4) = 16 - 2

h(4) = 14

x=5

h(5) = 4(5) - 2

h(5) = 20 - 2

h(5) = 18

Answer:

1. Dilation with a scale factor of 0.5 centered at the origin.

2. Translation of 4 units to the right.

3. Translation of 3 units up.

The numerical length of vw is 9.

To determine the numerical length of vw, we need to find the magnitude of the vector vw. We can use the distance formula, which states that the magnitude of a vector (a, b) is given by the square root of (a^2 + b^2).

Given vw = 4x - 7, we can substitute x = wx + vx to express vw in terms of wx and vx:

vw = 4(wx + vx) - 7

= 4(3 + vx) - 7

= 4(3 + 5x + 1) - 7

= 4(5x + 4) - 7

= 20x + 16 - 7

= 20x + 9

Now, we can find the magnitude of vw by substituting x = 0:

|vw| = |20(0) + 9|

= |9|

= 9

Therefore, the numerical length of vw is 9.

The numerical length of vw is determined to be 9 units using the given information and the distance formula for vectors.

To know more about length , Visit:

https://brainly.com/question/2217700

#SPJ11

Answer:

The answer is 7

Step-by-step explanation:

Answer:

11/2

Step-by-step explanation:

if you multiply 3

2 _X2 youget 11/2

4

Answer:

y=-2/1 -5

Step-by-step explanation:

The y-intercept is -5 because the blue line goes through the y-axis at -5 and the slope is -2/1 because you take two points where the blue line goes through and perform the rise over run method to get the slope.

Answer: A shark is swimming at 18 feet below sea level.

Step-by-step explanation: because it just asked that which one is the furthest from sea level it don’t say above zero or below zero!

Answer:

all 3 options are true : A, B, C

Step-by-step explanation:

warning : it has come to my attention that some testing systems have an incorrect answer stored as right answer for this problem.

they say that A and C are correct.

but I am going to show you that if A and C are correct, then also B must be correct.

therefore, my given answer above is the actual correct answer (no matter what the test systems say).

originally the information about the alignment of the point F in relation to point E was missing.

therefore, I considered both options :

1. F is on the same vertical line as E.

2. F is not on the same vertical line as E.

because of optical reasons (and the - incomplete - expected correct answers of A and C confirm that) I used the 1. assumption for the provided answer :

the vertical line of EF is like a mirror between the left and the right half of the picture.

A is mirrored across the vertical line resulting in B. and vice versa.

the same for C and D.

this leads to the effect that all 3 given congruence relationships are true.

if we consider assumption 2, none of the 3 answer options could be true.

but if the assumptions are true, then all 3 options have to be true.

now, for the "why" :

remember what congruence means :

both shapes, after turning and rotating, can be laid on top of each other, and nothing "sticks out", they are covering each other perfectly.

for that to be possible, both shapes must have the same basic structure (like number of sides and vertices), both shapes must have the same side lengths and also equally sized angles.

so, when EF is a mirror, then each side is an exact copy of the other, just left/right being turned.

therefore, yes absolutely, CAD is congruent with CBD. and ACB is congruent to ADB.

but do you notice something ?

both mentioned triangles on the left side contain the side AC, and both triangles in the right side contain the side BD.

now, if the triangles are congruent, that means that each of the 3 sides must have an equally long corresponding side in the other triangle.

therefore, AC must be equal to BD.

and that means that AC is congruent to BD.

because lines have no other congruent criteria - only the lengths must be identical.

The approximate change formula for a function z=f(x, y) at the point (a, b) in terms of differentials is given by Δz ≈ ∂z/∂x |(a, b) dx + ∂z/∂y |(a, b) dy

Function is equal to,

z=f(x, y)

In terms of differential the approximate change formula at (a, b) is,

Δz ≈ ∂z/∂x |(a, b) dx + ∂z/∂y |(a ,b) dy

where,

Δz is the approximate change in z

∂z/∂x is the partial derivative of z with respect to x

∂z/∂y is the partial derivative of z with respect to y

dx is the small change in x

dy is the small change in y

The vertical bars indicate that the partial derivatives are evaluated at the point (a, b).

This formula represents the total differential of z at the point (a, b).

Which is the linear approximation of the change in z due to small changes in x and y.

It is based on the assumption,

That the change in z is approximately proportional to the changes in x and y and is valid for small changes in x and y.

Learn more about function here

brainly.com/question/31406491

#SPJ4

Answer:

x = 7

Step-by-step explanation:

Given the equations

2x + 3y = 17 → (1)

2y + z = 1 → (2)

5x + 10z = 25 → (3)

Rearrange (2) expressing z in terms of y

z = 1 - 2y

Substitute z = 1 - 2y into (3)

5x + 10(1 - 2y) = 25

5x + 10 - 20y = 25 ( subtract 10 from both sides )

5x - 20y = 15 → (4)

Multiply (1) by 20 and (4) by 3, then add to eliminate the y- term

40x + 60y = 340 → (5)

15x - 60y = 45 → (6)

Add (5) and (6) term by term to eliminate y, that is

55x = 385 ( divide both sides by 55 )

x = 7

Answer:

\(x = 7\)

Step-by-step explanation:

From the equation \(2y + z = 1\) , we can separate \(z\) so that \(z = 1-2y\).

The equation \(5x+10z = 25\) can then be turned into:

\(5x+10(1-2y) = 25\)

\(5x+10-20y = 25\)

\(5x -20y = 15\)

\(x-4y = 3\) (divide by \(5\) on both sides)

We can now use elimination to solve for one of the variable:

\(2(x-4y) = 2\times3\) (times 2 to get \(2x\) for elimination)

\(2x-8y=6\)

\(2x+3y-(2x-8y) = 17-6\)

\(11y = 11\)

\(y = 1\)

Now, we can use substitution to solve for \(x\):

\(2x+3y = 17\)

\(2x+3 = 17\)

\(x = 7\)

Hope this helps :)

Answer:

Step-by-step explanation:

Given the expression, -3(2w+6)-4, we are to look for an equivalent expression for the equation.This is as shown:

Step 1: Open the parenthesis

= -3(2w+6)-4

= -3(2w)-3(6)-4

= -6w-18-4

Step 2: Simplify the resulting expression in step 1

= -6w-18-4

= -6w - 22

Step 3: factor out the common values from each term. Since the common value is 2, on factoring we will have;

2{-3w+(-11)}

Hence the equivalent expression is 2{-3w+(-11)}

Answer:

a and b

Step-by-step explanation:

no.