Determine the value of x.
X 1
X 1.5

A)x=1
B)x=2.5
C)x=2
D)x=2.9​

Answer:

A. The model under-predicts the price of this diamond because the residual is positive.

Step-by-step explanation:

The diamond seller has listed its 0.8 weighting diamonds at a price of $10,999. The price of the diamond is set as the market maker. The model is used to predict the price of the diamonds. This model has under predicted the value of diamonds and actual price of diamonds must be higher.

Since, we are given the coordinates of vector as (2,3),

We will represent the vector in XY plane,i.e.

a graph having x-axis and y-axis.

we draw a straight line representing x-axis and a straight line bisecting it representing y-axis;

SOLUTION

The given values are:

The z score is calculated as follows:

Thus the required probability is P(z>1)

Using the table it follows:

Therefore the required probability is 0.1587

The rule may be extended or generalized to products of three or more functions, to a rule for higher-order derivatives of a product, and to other contexts.

Answer:

1.6726

Step-by-step explanation:

square each standard deviation, add them then squareroot.

\(\rm SD = 1.6726\)

Step-by-step explanation:

Given :

Stroke Category                  Time                    Standard Deviation

   Backstroke                    55.6 sec                         0.70 sec

   Breaststroke                  63.3 sec                         0.92 sec

   Butterfly                         54.4 sec                         0.94 sec

   Freestyle                        50.2 sec                         0.76 sec

Calculation :

To find the standard deviation of the sum of the 4 random variables we need to square each of the standard deviation and add them and then take the square root.

\(\rm SD = \sqrt{(0.70^2)+(0.92^2)+(0.94^2)+(0.76^2)}\)

\(\rm SD = \sqrt{2.7976}\)

\(\rm SD = 1.6726\)

For more information, refer the link given below

https://brainly.com/question/23907081?referrer=searchResults

answer is -1 you can check it on the calculator

pleaseeee mark me as the BRAINLIEST pleaseeee

Step-by-step explanation:

(-)(-)=+

1−(−3)−5

1+3-5

4-5

-1

Answer:

534

Step-by-step explanation:

The 3-year-old boy is more unusually tall for his age and gender than the 10-year-old girl.

A z-score calculates how many standard deviations an observation is from the mean. An observation is said to be above the mean if the z-score is positive, while it is said to be below the mean if the z-score is negative.

For the 3-year-old boy, the z-score is:

z = (43 - 38) / 2 = 2.5

The z-score for the 10-year-old girl is:

z = (57 - 54.5) / 2.5 = 1

The 3-year-old boy has a higher z-score than the 10-year-old girl, indicating that he is more unusually tall for his age and gender. This is due to his height, which is higher than the average for his age group 38 inches .

Therefore, the 3-year-old boy is more unusually tall for his age and gender than the 10-year-old girl.

Learn more about standard deviations here : brainly.com/question/28225633

#SPJ1

Answer:

Step-by-step explanation:

y = mx + b

y = -x/3 + b

1 = -2/3 + b

b = 5/3

y = -x/3 + 5/3

Answer:

The solution of the equation is  \(R = \frac{V}{i}\).

Step-by-step explanation:

The previous equations is for the Ohm's Law, which states that current (\(i\)), measured in amperes, is directly proportional to the voltage (\(V\)), measured in volts:

\(V \propto i\)

The complete formula is:

\(I\cdot R = V\) (1)

Where \(R\) is the electric resistance, measured in ohms.

Solving for \(R\) means that we need to clear \(R\) within the formula, a process that will be presented step-by-step:

1) \(V = i\cdot R\) Given

2) \(V\cdot i^{-1} = (i\cdot R)\cdot i^{-1}\) Compatibility with multiplication.

3) \(V\cdot i^{-1} = R\cdot (i\cdot i^{-1})\) Commutative and associative properties.

4) \(V\cdot i^{-1} = R\cdot 1\) Existence of multiplicative inverse.

5) \(V\cdot i^{-1} = R\) Modulative property.

6) \(R = \frac{V}{i}\) Definition of division/Symmetric property/Result

The solution of the equation is  \(R = \frac{V}{i}\).

Answer:

5 4/10 is the answers for the question

Step-by-step explanation:

please give me brainlest

Answer:it seems as if the red and yellow paint go up more and more so here is your equation

Step-by-step explanation:

in the cordnaite plane It shows the the red and yellow paint has more in each batch and is multiplying by 2 on r axis and adding three each time on the y axis

The football is approximately 96.4 feet from the base of the goal post.

The tangent function in trigonometry is used to determine the proportion between the lengths of the adjacent and opposite sides in a right triangle. Where theta is the angle of interest, the tangent function is defined as:

tan(theta) = opposing / adjacent.

When the lengths of one side and one acute angle are known, the tangent function is used to solve for the unknown lengths or angles in right triangles. In order to utilise the tangent function, we must first determine the angle of interest, name the triangle's adjacent and opposite sides in relation to that angle, and then calculate the ratio of those sides using the tangent function.

Given, the angle of elevation is 16 degrees 42'.

That is,

Angle of elevation = 16 degrees 42' = 16 + 42/60 = 16.7 degrees

Using tangent function we have:

tan(16.7) = 30/x

x = 30 / tan(16.7)

x = 96.4 feet

Hence, the football is approximately 96.4 feet from the base of the goal post.

Learn more about tangent function here:

https://brainly.com/question/22043858

#SPJ1

Answer:

\(y = -5\)

Step-by-step explanation:

Given

\(B = (7,-3)\)

\(C = (6,y)\)

\(A = (4,-9)\)

Required

The y coordinate of C

Since A, B and C are on the same line, the slope of AB and the slope of AC will be the same.

Slope (m) is calculated as:

\(m = \frac{y_2 - y_1}{x_2 - x_1}\)

For AC

\(A = (4,-9)\)     \(C = (6,y)\)    

\(m = \frac{y - -9}{6 - 4}\)

\(m = \frac{y +9}{2}\)

For AB

\(A = (4,-9)\)       \(B = (7,-3)\)

\(m = \frac{-3 --9}{7-4}\)

\(m = \frac{-3 +9}{3}\)

\(m = \frac{6}{3}\)

\(m = 2\)

So, we have:

\(m = \frac{y +9}{2}\) and \(m = 2\)

\(m = m\)

\(\frac{y +9}{2} = 2\)

Multiply both sides by 2

\(y +9 = 4\)

Solve for y

\(y = 4-9\)

\(y = -5\)

Hence, the y coordinate of C is -5

Answer:

$0.64 per cup

Step-by-step explanation:

There are 16 cups in 1 gallon, so the number of cups in 2 gallons is:

1 gallon: 16 cups

2 gallon = 2 x 1 gallon = 2 x 16 cups = 32 cups

So we need to find the price of each cup:

1 cup = ($20.48 / 32 cups) = $0.64 per cup.

Answer:

The answer is negative -95

Answer:

C. 9 - x

Step-by-step explanation:

We are given a sentence expression : 9 more than x.

Let's go over all the expressions and what they say as a setnence.

A. x - 9

This would be x more than 9, since the original number of x is way higher than 9. Making this answer incorrect.

B. 9 * x^9? (I am assuming)

This would be 9 times x, not even the correct property.

C. 9 - x

This would be 9 more than x, though you could say it's addition, the value of 9 is more than x, hence making it subtraction.

D. x + 9

This would be 9 plus x, no number has an official value than another.

Mοve the pοint by twice the distance fοund in step 2 in the οppοsite directiοn οf the line x=-2.

A triangle is a pοlygοn with three sides, three angles, and three vertices. It is the simplest pοlygοn that can be fοrmed with straight lines. The sum οf the interiοr angles οf a triangle is always 180 degrees. The three sides οf a triangle can be οf equal length (equilateral triangle), twο sides can be οf equal length (isοsceles triangle), οr all sides can be οf different lengths (scalene triangle).

Tο reflect the given image acrοss the vertical line x=-2, we can fοllοw these steps:

Draw a vertical line passing thrοugh x=-2.

Fοr each pοint in the image, find the distance between the pοint and the line x=-2.

Cοnnect the new pοints tο fοrm the reflected image.

Therefοre, mοve the pοint by twice the distance fοund in step 2 in the οppοsite directiοn οf the line x=-2.

To learn more about triangle from the given link:

https://brainly.com/question/29083884

#SPJ1

The perimeter of triangle ABC could be either approximately 27.98 cm or approximately 14.66 cm, depending on the length of AB.

What is the perimeter?

The perimeter is a mathematical term that refers to the total distance around the outside of a two-dimensional shape. It is the length of the boundary or the sum of the lengths of all the sides of a closed figure.

Let's call the length of AB x and the length of BC y.

First, we can use the fact that CD is the height of the triangle to find the area of triangle ABC:

Area of triangle ABC = 1/2 * CD * AB

Substituting the given values, we have:

1/2 * 12 * x = 6x

So the area of triangle ABC is 6x square centimeters.

We can also use the fact that angle BCD is 30 degrees to set up a trigonometric equation involving x and y:

tan(30) = x/y

Simplifying, we get:

y = x/tan(30) = x/(1/√(3)) = √(3) * x

Now we can use the formula for the area of a triangle in terms of its sides:

Area of triangle ABC = 1/2 * AB * BC * sin(B)

where B is the angle between sides AB and BC. In this case, we know that angle BCD is 30 degrees, so angle BCA is 60 degrees, and angle ABC is 90 degrees. Therefore, we have:

Area of triangle ABC = 1/2 * x * √3 * x * sin(60)

Simplifying, we get:

Area of triangle ABC = 1/4 * √3 * x²

Since we already found that the area of triangle ABC is 6x square centimeters, we can set these two expressions equal to each other and solve for x:

6x = 1/4 * √(3) * x²

Multiplying both sides by 4/√3, we get:

24/√(3) * x = x²

Simplifying, we get:

x² - 24/√(3) * x = 0

Using the quadratic formula, we get:

x = (24/√(3) ± √((24/√(3))² - 410)) / 2*1

Simplifying, we get:

x = 16√(3) / 3 or x = 8 √(3) / 3

Since we are looking for the perimeter of triangle ABC, we need to find y as well. Using the equation we derived earlier, we have:

y = √(3) * x

Therefore, we have two possible triangles:

Triangle ABC1: AB = 16 √(3) / 3, BC = 16, and AC = 8 √7 / 3

Triangle ABC2: AB = 8 √3 / 3, BC = 8, and AC = 4 √7 / 3

The perimeter of each triangle is the sum of its side lengths. Therefore:

Perimeter of triangle ABC1 = 16 √3/ 3 + 16 + 8 √7 / 3 ≈ 27.98 cm

Perimeter of triangle ABC2 = 8 √3 / 3 + 8 + 4 √7 / 3 ≈ 14.66 cm

hence, the perimeter of triangle ABC could be either approximately 27.98 cm or approximately 14.66 cm, depending on the length of AB.

To learn more about the perimeter visit:

brainly.com/question/397857

#SPJ1

Answer:

3/4

Step-by-step explanation:

Well its a incomplete Question but i am solving a realted type Question .

• Find the slope of the line -3x - 4y = 12 :-

Ans ) The given equation can be converted into Slope intercept form , which is y = mx + c , where ,

⇒ -3x -4y = 12

⇒ -4y = 12 +3x

⇒ y = 3x + 12 /4

⇒ y = 3/4x + 12/3

⇒ y = ¾x + 4

⇒ m = ¾

⇒ c = 4

Answer:

75

Step-by-step explanation:

f(4) means to use 4 in place of x.

f(x) = 3(5)^(x-2)

fill in 4 for

f(4) = 3(5)^(4-2)

do the 4-2 subtraction first

f(4) = 3(5)^2

do the 5 to the 2nd power next.

f(4) = 3(25)

last, multiply.

f(4) = 75

This is just following the typical order of operations.

The value of x on the boundary line is (a) 4

From the question, we have the following parameters that can be used in our computation:

x-2y >= 4

Rewrite as

x - 2y ≥ 4

On the boundary line, we have the value of y to be 0

So, we have the following representation

x - 2(0) ≥ 4

Evaluate

x  ≥ 4

Express as an equation

x = 4

Hence, the value of x is 4

Read more about inequality at

https://brainly.com/question/8549552

#SPJ1

Answer:

one solution

Step-by-step explanation:

2x+3y=6      multiply this equation  with 3

-3x+5y=-15    multiply this equation  with 2

so

6x+9y=18

-6x+10y=-15

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

add these equation

so 6x-6x+9y+10y=18-15

     19y=3

y=3/19

so 2x+3*3/19=6      multiply this equation  with 19

2x*19+9=6*19

38x+9=114

-9          -9

38x=105

x=105/38

Answer:

Step-by-step explanation:

23/40 = 0.575

Answer:

First problem (Jeremy):

\( \frac{1}{3} ( \frac{3}{5} + \frac{2}{5} )\)

Second problem (Sylvia):

\( \frac{2}{5} ( \frac{3}{5} + \frac{1}{3} )\)

Third problem (Kailey):

\( \frac{3}{5} ( \frac{1}{3} + \frac{2}{5} )\)

Answer:

80%

Step-by-step explanation:

out of 20, 1 would be 5%  

4 = 20%

100% -  20% = 80%

She needs to paints the 15% of the total toys.

To determine the quantity or percentage of something in terms of 100, use the percentage formula. Per cent simply means one in a hundred. Using the percentage formula, a number between 0 and 1 can be expressed. A number that is expressed as a fraction of 100 is what it is. It is mostly used to compare and determine ratios and is represented by the symbol %.

Given:

Total toys= 20

Toys to be paint= 7

She paints 4 toys and 3 toys are remaining .

so, percent of the 20 toys does she still have to paint

= 3/ 20 x 100

= 3 x 5

= 15%

Hence, she needs to paints the 15% of the total toys.

Learn more about percent here:

https://brainly.com/question/28084096

#SPJ2

Answer:

the number is 5

Step-by-step explanation:

let the number be x

4*(x)+-7=3+2x

4x-7=3+2x

2x=10

x=5