90+2x=4x
can you please help me solve this with steps

Answer:

a. Jared and Ali

Step-by-step explanation:

b. Molly make mistake when he/she divide all equation by 4 but left the 8x remain 8x, it should be 2x.

Mark make mistake in changing the sign whitout changing side/ passing trough equal sign. FYI, + can be - and also - can be + if they move to the other side

i.e.

2 + 3 = 5

2 = 5 - 3

Inferential statistics involves using sample data to make inferences, predictions, or generalizations about a larger population, providing valuable insights and conclusions based on statistical analysis.

The term "inferential statistics" is associated with the task of making inferences or drawing conclusions about a population based on sample data.

In other words, it involves using sample data to make generalizations or predictions about a larger population.

Inferential statistics is concerned with analyzing and interpreting data in a way that allows us to make inferences about the population from which the data is collected.

It goes beyond simply describing the sample and aims to make broader statements or predictions about the population as a whole.

This branch of statistics utilizes various techniques and methodologies to draw conclusions from the sample data, such as hypothesis testing, confidence intervals, and regression analysis.

These techniques involve making assumptions about the underlying population and using statistical tools to estimate parameters, test hypotheses, or predict outcomes.

The goal of inferential statistics is to provide insights into the larger population based on a representative sample.

It allows researchers and analysts to generalize their findings beyond the specific sample and make informed decisions or predictions about the population as a whole.

For similar question on population.

https://brainly.com/question/30396931  

#SPJ8

Answer:

270

Step-by-step explanation:

1102-832

The vectors v and w are orthogonal because their dot product is 0 .

The angle between v and w is  :

\(cos\theta=0\\\\= > \theta=90\)

We have the information from the question:

v = -i - j,

w = -i + j

We have to find the dot product and state the vectors are parallel, orthogonal, or neither. vij, wij.

Now, According to the question:

The dot product are:

(v)(w) =  (-i - j)( -i + j)

Taking each  set of integer of the vector into consideration:

(v)(w) = ( -1 × - 1) ( -1 × 1)

(v)(w) = 1 - 1

(v)(w) = 0

So, The dot product is 0

This is implies that :

\(cos\theta=0\\\\= > \theta=90\)°

Hence, we can conclude that :

The vectors v and w are orthogonal because their dot product is 0 .

Learn more about Dot product at:

https://brainly.com/question/23477017

#SPJ4

The given question is incomplete, complete question is:

for the following vectors, (a) find the dot product vw; (b) find the angle between v and w; (c) state whether the vectors are parallel, orthogonal, or neither. vij, wij

v=-i-j, w=-i+j

The camper should take 3 units of food, 1 first-aid kit, and 1 piece of clothing within the given constraints.

To determine the optimal number of each item the camper should take, we need to maximize the total benefit while considering the capacity constraint of the backpack.

Let's assume the camper takes x units of food, y first-aid kits, and z pieces of clothing.

The backpack has a capacity of 9 ft^3, and each unit of food takes up 2 ft^3. Therefore, the constraint for food is 2x ≤ 9, which simplifies to x ≤ 4.5. Since x must be a whole number and the camper needs at least one unit of food, the camper can take a maximum of 3 units of food.

Similarly, for first-aid kits, since each kit occupies 1 ft^3 and the camper must take at least one, the constraint is y ≥ 1.

For clothing, each piece takes 3 ft^3, and the constraint is z ≤ (9 - 2x - y)/3.

Now, we need to maximize the total benefit. The benefit of food is assigned as 7, first aid as 5, and clothing as 6. The objective function is 7x + 5y + 6z.

Considering all the constraints, the possible combinations are:

- (x, y, z) = (3, 1, 0) with a total benefit of 7(3) + 5(1) + 6(0) = 26.

- (x, y, z) = (3, 1, 1) with a total benefit of 7(3) + 5(1) + 6(1) = 32.

- (x, y, z) = (4, 1, 0) with a total benefit of 7(4) + 5(1) + 6(0) = 39.

- (x, y, z) = (4, 1, 1) with a total benefit of 7(4) + 5(1) + 6(1) = 45.

Among these combinations, the highest total benefit is achieved when the camper takes 3 units of food, 1 first-aid kit, and 1 piece of clothing.

Therefore, the camper should take 3 units of food, 1 first-aid kit, and 1 piece of clothing to maximize the total benefit within the given constraints.

Learn more about objective function here:

brainly.com/question/33272856

#SPJ11

The value of  a+ b + c + d + e + f is 2.

It is referred to as being in factored form when a quadratic expression is represented as the sum of two linear factors plus a constant.

We have to factor x² – y² – z² + 2yz.

Using the general rule that p² – 2pq + q² = (p – q)² .

So we want to rearrange the last three terms.

= x² + (–y² – z² + 2yz)

Now, If we were to factor out a –1 from the last three terms, we have

= x² – (y² + z² – 2yz)

Now put y² + z² – 2yz = (y – z)².

= x² – (y – z)²

This expression is actually a differences of squares.

We know p² – q² as (p – q)(p + q).

=x² – (y – z)²

= (x – (y – z))(x  + (y – z))

Now, let's distribute the negative one in the trinomial x – (y – z)

= (x – (y – z))(x  + (y – z))

= (x – y + z)(x + y – z)

Now, comparing (x – y + z)(x + y – z)  and  (ax + by + cz)(dx + ey + fz)

we get a = 1, b = –1, c = 1, d = 1, e = 1, and f = –1.

So, a+ b + c + d + e + f

= 1 - 1 + 1+ 1 +1 - 1

= 2

Learn  more about Factored form here:

https://brainly.com/question/29065045

#SPJ1

Answer:

a should be 45

b should be 90

c should also be 45

Step-by-step explanation:

I know this because 180-135=45 for a

since c is also 45, beside c should be 135.

which means those angles are congruent.

since a triangle equals 180 degrees all together 180-45-45=90

so b is 90

correct me if im wrong

A 95% confidence interval for percent of american adults who believe in aliens:  (0.6578, 0.7822)

In this question we have been given that in a survey conducted on an srs of 200 american adults, 72% of them said they believed in aliens

We need to find the 95% confidence interval for percent of american adults who believe in aliens.

95% confidence interval = (p ± z√[p(1 - p)/n])

Here, n = 200

p = 72%

p = 0.72

And the z-score for 95% confidence interval is 1.960

The upper limit of interval would be,

(p + z√[p(1 - p)/n])

= 0.72 + 1.960 √[0.72(1 - 0.72)/200]

= 0.72 + 1.960 √[(0.72 * 0.28)/200]

= 0.72 + 1.960 √0.001008

= 0.72 + 0.0622

= 0.7822

The lower limit of interval would be,

(p - z√[p(1 - p)/n])

= 0.72 - 1.960 √[0.72(1 - 0.72)/200]

= 0.72 - 1.960 √[(0.72 * 0.28)/200]

= 0.72 - 1.960 √0.001008

= 0.72 - 0.0622

= 0.6578

Therefore, a 95% confidence interval = (0.6578, 0.7822)

Learn more about 95% confidence interval here:

https://brainly.com/question/15683202

#SPJ4

The simplified form of the given expression is 4/√6. Therefore, option D is the correct answer.

A surd is an expression that includes a square root, cube root or other root symbol. Surds are used to write irrational numbers precisely – because the decimals of irrational numbers do not terminate or recur, they cannot be written exactly in decimal form.

The given expression is 6√2/√3 - 8/3√(3/2).

Here, 6√2/√3 - 8√3/3√2

= 6√2/√3 - 8/√3√2

= 6√2/√3 - 8/√6

= 12/√6- 8/√6

= 4/√6

Therefore, option D is the correct answer.

Learn more about the surds here:

https://brainly.com/question/30069850.

#SPJ9

Answer:

Step-by-step explanation:

its A i just did it lol

Answer:

1 . 20/4 = 5

2.  18 × 2 =36

3. 672/96 = 7

4. 8 × 17 = 136

Step-by-step explanation:

The mean and the standard deviation of the sampling distribution of the sample mean  is equal to 4.57 and 0.69 respectively.

Population mean  'μ' = 4.57

Sample size 'n' = 7

Population Standard deviation 'σ' =1.82

Mean of the sampling distribution of the sample mean is equal to the population mean,

which is μ = 4.57.

So, μₓ = μ = 4.57.

Standard deviation of the sampling distribution of the sample mean also known as the standard error of the mean.

Using the formula we have,

σₓ = σ / √(n)

Substituting the given values, we have,

⇒ σₓ = 1.82 / √(7)

⇒ σₓ = 1.82 / 2.646

⇒ σₓ = 0.6878

⇒ σₓ ≈ 0.69

This implies,

The standard deviation of the sampling distribution of the sample mean is σₓ ≈ 0.69.

Therefore, the mean of the sampling distribution of the sample mean and

standard deviation of the sampling distribution of the sample mean  is equal to 4.57 and 0.69 respectively.

Learn more about standard deviation here

brainly.com/question/30186130

#SPJ4

The above question is not complete, the complete question is:

Easy Eats Diner is a large restaurant chain. After paying for a meal at Easy Eats Diner, customers are asked to rate the quality of the food as a 1, 2, 3, 4, or 5, where a rating of 1 means "not good" and 5 means "excellent". The customers' ratings have a population mean of μ = 4.57, with a standard deviation of σ=1.82. Suppose that we will take a random sample of n= 7 customers' ratings. Let x represent the sample mean of the 7 customers' ratings. Consider the sampling distribution of the sample mean x.

Complete the following. Do not round any intermediate computations. Write your answers with two decimal places, rounding if needed.

(a) Find μₓ(the mean of the sampling distribution of the sample mean).  ?

(b) Find σₓ (the standard deviation of the sampling distribution of the sample mean). ?

If we round 81.244 to the nearest whole number then it would be 81.

For 65.33 is 65. Then, we sum.

Answer:

3 one

Step-by-step explanation:

The statement that supports the data is the mean distance to his friends' houses is in between 2 and 3 blocks.

Given:

Karl records the number of city blocks from his house to each of his friends houses.

Data set for the number of city blocks to eight friends houses:

{1, 2, 5, 3, 2, 2, 5, 3}

The first option: it is given that the maximum number of blocks the Karl lives from his friend is 4, but according to the data set, the maximum number of house blocks should be 5.

Hence, this option is incorrect.

The second option: It is given that the mode shows that Karl has 3 friends who live 3 blocks from him, but according to the given data set Karl has 3 friends who lives 2 blocks from him. Hence the mode is 2.

Hence, this option is incorrect.

The third option: It is given that the minimum distance from Karl's house to a friend's is 2 blocks, but according to the given data set the minimum distance from Karl's house to a friend's is 1 block.

Hence, this option is incorrect.

The fourth option:  It is given that the mean distance to his friend's houses is in between 2 and 3 blocks.

We will find the mean for the given data set.

⇒ Mean = (Sum of all the data points) / (Total number of data points)

⇒ Mean = (1 + 2 + 5 + 3 + 2 + 2 + 5 + 3)/8

⇒ Mean = 23/8

⇒ Mean = 2.875

∴ The mean distance from Karl to his friend's houses is 2.875 which is in between 2 and 3.

Hence, this option is correct.

Therefore, the fourth option which says the mean distance between Karl and his friend's houses is in between 2 and 3 is correct.

Learn more about the Mean, Median and Mode here: https://brainly.com/question/15823385?referrer=searchResults

#SPJ2

Answer:

1 pizza

Step-by-step explanation:

Of the pizzas recently sold at Pizza Pies, 10 had pepperoni and 2 did not.

This means, the total number of pizzas sold is

10 pepperoni + 2 pizzas without pepperoni = 12 pizzas

Hence, the number of 6 pizzas that would be sold without pepperoni is calculated as:

From the above question,

12 pizzas = 2 pizza without pepperoni

6 pizzas = x

Cross Multiply

12 pizzas × x = 6 Pizzas × 2 pizza without pepperoni

x = 6 Pizzas × 2 pizza without pepperoni/12 pizzas

x = 1 pizza without pepperoni

Therefore, 1 pizza would not have pepperoni out of 6 pizzas sold

Answer:

5

Step-by-step explanation:

Answer:

15 mi

Step-by-step explanation:

\(a^2+b^2=c^2\\9^2+12^2=c^2\\81+144=225\\\sqrt{225}=c\\ c=15\)

Answer: A

Step-by-step explanation:

Plug in each domain for x one by one to get y/range = {-15, -7, -1, 9, 17}

$35.50........... ....

Answer:

7 554 .5

Step-by-step explanation:

46£¥^99$

368¥/%#(₩098$%(₩¥=98€€₩($$¥97

A square will always have 4-fold reflectional symmetry.

Square is a polygon with four equal sides and four right angles. It possesses 4-fold reflectional symmetry because it can be divided into four equal quadrants that are mirror images of each other. Each quadrant can be reflected along two perpendicular lines, resulting in four identical parts. The lines of reflection are the diagonals of the square, which bisect each other at right angles. This symmetry property makes the square an ideal choice for designs or patterns that require balanced and symmetrical elements.

Learn more about polygon  here

brainly.com/question/28276384

#SPJ11

Answer:

y = -7x - 4

Step-by-step explanation:

To write an equation of the line passing through the point (2, -9) with a slope of m = -7, we can use the point-slope form of the equation of a line:

y - y1 = m(x - x1)

where (x1, y1) is the given point and m is the slope.

Substituting the given values, we get:

y - (-9) = -7(x - 2)

Simplifying:

y + 9 = -7x + 14

y = -7x + 5 - 9

y = -7x - 4

Therefore, the equation of the line passing through the point (2, -9) with a slope of m = -7 is:

y = -7x - 4

The equation of the line in stope-intercept form is: y = -7x + 5

The general form for the equation of a line in slope intercept form is:

\(\text{y} = \text{mx} + \text{c}\)

Where:

We are given that the equation of the line passes through the point (2, -9) and has the slope -7. Thus:

\(-9 = -7(1) + \text{b}\)

\(\text{b}=5\)

Thus, the equation is:

\(\rightarrow \bold{y = -7x + 5}\)

Read more about the Equation of a Line at:

https://brainly.com/question/31086219

Answer:

x=40

Step-by-step explanation:

100+2x=180

80=2x

x=40

Answer:

40°, because 180 minus 100 is 80, then divided 80 by 2 (because there is two 2's) and you get 40

Step-by-step explanation:

Bleh :b

Answer:

A

Step-by-step explanation:

x only can have 1 function

Answer: 67

Step-by-step explanation:

We see a pattern where we multiply the number we added by previously by two.

For example, from 5 to 7, it is 2.

From 7 to 11, we add by 4.

From 11 to 19, we add by 8.

From 19 to 35, we add by 16.

This means the next number would be 32, adding 35 by 32 gives us 67,

Answer:

6^2

Step-by-step explanation:

A perfect square has to be raised to an even power

The only one raised to an even power is

6^2

Answer:

Angie

Step-by-step explanation:

When it is negative it basically means you owe that amount and Angie owes the most

Answer:

Angie because the bigger a negative number it the less in value it is.

Step-by-step explanation:

There are 3 balanced strings in set T.

To count the number of balanced strings in the set T={0, 1, 2}, we can establish a bijection between the set of balanced strings and T itself. A balanced string is defined as a string in which the sum of its digits is a multiple of 3.

We can define a function f: T" -> T that maps each string in T" to T by preserving the balanced property. If a string in T" is already balanced, f returns the string itself. If the string is not balanced, f replaces the last digit with digit that makes the sum a multiple of 3.

By showing that this function is both injective (one-to-one) and surjective (onto), we establish a bijection. The bijection rule states that if two sets have a bijection between them, they have the same cardinality. Therefore, the number of balanced strings is equal to the number of elements in T, which is 3.

learn more about function

brainly.com/question/30721594

#SPJ11

Answer:

2 units

Step-by-step explanation:

A triangle is a polygon with three sides and three angles. Types of triangle are acute, obtuse, scalene, isosceles, equilateral and right angled triangle.

Since point D and E are midpoints of the sides of triangle ABC, hence:

AD = BD = 3t, BE = CE = 4t, AC = 7t + 6

The perimeter of triangle ABC = AC + BC + AB = AC + AD + BD + BE + CE;

Substituting:

48 = 7t + 6 + 3t + 3t + 4t + 4t = 21t + 6

48 = 21t + 6

21t = 42

t = 2 units

Answer: \(\$25.201\)

Step-by-step explanation:

Given

The Medicare tax rate is 1.45%

The wages of a person is $1738

The amount which is withheld from the person paycheck is

\(\Rightarrow 1738\times 1.45\%\\\Rightarrow 1738\times 0.0145\\\Rightarrow \$25.201\)  

The value for p is 30.

learn more about hypothesis click here:

brainly.com/question/606806

#SPJ4

Answer:

please see attached picture