The error made by the student is instead of taking +4 as common he has taken - 4 as common.
Factoring by grouping terms:To factor an expression by grouping, we need to look for groups of terms that have common factors. Then, we factor out those common factors from each group and see if there is a common factor that can be further factored out.
Here we have
6x² – x – 12
The above expression can be factorized as follows
=> 6x² – x – 12
= 6x² – 9x + 8x – 12 [ Splitting the middle term ]
= 3x(2x – 3) + 4(2x – 3) [ Grouping the terms ]
= (3x + 4)(2x – 3)
Hence, the factors of given expression are (3x + 4) and (2x – 3)
The error made by the student is in step 3 instead of taking +4 as common he has taken - 4 as common which doesn't give the common factors in the next step taken.
Therefore,
The error made by the student is instead of taking +4 as common he has taken - 4 as common.
Learn more about Factoring at
https://brainly.com/question/23717579
#SPJ1
In a biology lab, a population of 100 bacteria reproduce by splitting.
Every hour, on the hour, each bacterium splits into two bacteria.
Write a sentence of the form " __is a function of __”
The number of bacteria produced is a function of time in hours.
What is a function?In Mathematics, a function simply refers to a mathematical expression which can be used for defining and showing the relationship that exist between two or more variables in a data set.
This ultimately implies that, a function typically shows the relationship between input values (x-values or domain) and output values (y-values or range) of a data set, as well as showing how the elements in a table are uniquely paired (mapped).
Based on the information provided above, we can reasonably infer and logically deduce that the bacteria's population increases with respect to time (number of hours).
Read more on function here: brainly.com/question/12789432
#SPJ1
A student uses the change of base formula on a logarithm expression and the result is the following formula: (log3)/(log8) What was the original formula?
The original logarithmic formula of the given expression is log₈3.
The logarithm has different properties that are fundamental to work with it and solve different problems. The change of base formula states that logₐb = (logₓb)/(logₓa), where x is any base.
In this case, the base x is not specified, so it can be any base. Using the change of base formula, we can rewrite the original formula as (logₓ3)/(logₓ8), which is equivalent to the given expression (log3)/(log8). Therefore, the original formula was log₈3.
See more about logarithm at https://brainly.com/question/1807994.
#SPJ11
Problem 3. Let \( A=\left[\begin{array}{ll}4 & 2 \\ 2 & 1\end{array}\right] \) and \( B=\left[\begin{array}{rr}1 & -3 \\ -2 & 6\end{array}\right] \). Calculate \( A B \). What do you notice? Problem 4
The resulting matrix is \( \left[\begin{array}{ll}0 & 0 \\ 0 & 0\end{array}\right] \).
we notice is that the resulting matrix is the zero matrix, which means that all of its elements are zero. This is because the matrices \( A \) and \( B \) are inverses of each other.
To calculate \( A B \), we multiply the elements in each row of \( A \) with the corresponding elements in each column of \( B \) and then add them together. This gives us the elements in the resulting matrix.
So, the first element in the resulting matrix is \( (4 * 1) + (2 * -2) = 4 - 4 = 0 \). The second element is \( (4 * -3) + (2 * 6) = -12 + 12 = 0 \). The third element is \( (2 * 1) + (1 * -2) = 2 - 2 = 0 \). And the fourth element is \( (2 * -3) + (1 * 6) = -6 + 6 = 0 \).
Therefore, the resulting matrix is \( \left[\begin{array}{ll}0 & 0 \\ 0 & 0\end{array}\right] \).
What we notice is that the resulting matrix is the zero matrix, which means that all of its elements are zero. This is because the matrices \( A \) and \( B \) are inverses of each other. When we multiply a matrix by its inverse, we get the identity matrix, which has ones on the main diagonal and zeros everywhere else. But in this case, since the matrices are 2x2, the identity matrix is just the zero matrix.
Learn more about Matrix
brainly.com/question/28180105
#SPJ11
Alice is building a fenced-pen in her backyard for her dog, as shown (x+14 length) (x as height) Write an expression that represents the total amount of fencing she will need, in feet. If the longer dimension of the rectangle is 25 feet, how many feet of fencing does Alice need?
The answer was 4x+28, but theres still more
Alice needs __ feet of fencing
Alice therefore requires 72 feet of netting.
Rectangle: What does that mean?An example of a quadrilateral with equal and aligned opposing edges is a rectangular. It is a rectangle with four sides and four edges that are each 90 degrees. A rectangular is a form with only two dimensions.
If the longer dimension of the rectangle is 25 feet, then we can write:
x + 14 = 25
Solving for x, we get:
x = 25 - 14 = 11
Therefore, the height of the rectangle is 11 feet.
To find the total amount of fencing Alice needs, we need to add up the length of all four sides of the rectangle. Since opposite sides of a rectangle are equal in length, we can write:
Total fencing = 2(length + height)
Substituting the values of length and height, we get:
Total fencing = 2(25 + 11)
Total fencing = 72 feet
Therefore, Alice needs 72 feet of fencing.
To know more about Rectangle visit:
https://brainly.com/question/2607596
#SPJ1
A child is getting ice cream and cannot decide between a cone-shaped cup and a cylindrical-shaped cup. If both cups are 12 cm high, and each has a diameter of 8 cm, which shape should the child choose to get the most ice cream? How much more ice cream will he get? Round answers to the nearest tenth.
Find the volume of the cone-shaped cup
Find the volume of the cylindrical-shakes cup.
Which shape should the child choose?
How much more ice cream will he get?
The child will get about 281.3 cubic centimeters more ice cream in the cylindrical-shaped cup than in the cone-shaped cup.
What is volume ?Volume is an important concept in many areas of science and engineering, including physics, chemistry, and materials science. It is also used in everyday life, such as in calculating the amount of liquid that can be held in a container, or the amount of space that is needed to store a set of objects.
According to given conditions:To determine which cup shape holds more ice cream, we need to compare their volumes. The formula for the volume of a cone is (1/3)πr²h, where r is the radius of the circular base and h is the height of the cone. The formula for the volume of a cylinder is πr²h, where r is the radius of the circular base and h is the height of the cylinder.
First, let's find the volume of the cone-shaped cup:
radius = diameter/2 = 8/2 = 4 cm
height = 12 cm
volume = (1/3)πr²h
volume = (1/3)π(4 cm)²(12 cm)
volume ≈ 201.1 cm³
Next, let's find the volume of the cylindrical-shaped cup:
radius = diameter/2 = 8/2 = 4 cm
height = 12 cm
volume = πr²h
volume = π(4 cm)²(12 cm)
volume ≈ 482.4 cm³
The cylindrical-shaped cup has a larger volume, so the child should choose the cylindrical-shaped cup to get the most ice cream.
To find out how much more ice cream the cylindrical-shaped cup holds, we can subtract the volume of the cone-shaped cup from the volume of the cylindrical-shaped cup:
482.4 cm³ - 201.1 cm³ ≈ 281.3 cm³
Therefore, the child will get about 281.3 cubic centimeters more ice cream in the cylindrical-shaped cup than in the cone-shaped cup.
To know more about volume visit :
https://brainly.com/question/14197390
#SPJ1
Find the area of the shaded region under the standard normal curve. If convenient, use technology to find the area. 202 The area of the shaded region is Round to four decimal places as needed)
The area of the shaded region under the standard normal curve is 0.4783.
What is standard normal curve?One kind of the normal distribution is the standard normal distribution. It happens when a typical random variable's mean and standard deviation are both one. In other terms, the term "standard normal distribution" refers to a normal distribution with a mean of 0 and a standard deviation of 1. Moreover, the conventional normal distribution has a centre point of zero, and the standard deviation indicates how much a measurement deviates from the mean.
The area under the standard normal curve can be determined using the z-table for area.
For the given figure the area under the standard normal curve is given as:
P[-2.02<Z<0]
=0.5-0.0217
=0.4783
Hence, the area of the shaded region under the standard normal curve is 0.4783.
Learn more about normal distribution here:
https://brainly.com/question/15103234
#SPJ1
The complete question is:
Styles Editing Voice Sensitivity 3. Given are three arbitrary three-dimensional shapes. Use these to complete the following table to see if Euler's Formula holds for these shapes (11 points) a. b. c. Figure F V F+ V E a. b. C. А. If you answered "NO" for any Do all of them satisfy Euler's Formula? of them, explain your reasoning [1 point) B B A polyhedron has 10 edges and 6 vertices. How many faces does it have? Sketch a polyhedron that satisfies these conditions and name the polyhedron you drew. [2 points)
A Polyhedron with 10 edges and 6 vertices has 4 faces.
A. Yes, all of the shapes satisfy Euler's Formula, which states that F + V - E = 2, where F is the number of faces, V is the number of vertices, and E is the number of edges. The following table shows that each shape satisfies this formula:
B. A polyhedron with 10 edges and 6 vertices has 4 faces. The polyhedron that satisfies these conditions is a regular tetrahedron.
Learn more about Euler's Formula
brainly.com/question/12274716
#SPJ11
40% of consumers believe that cash will be obsolete in the next 20 years. Assume that 7 consumers are randomly selected. Find the probability that fewer than 3 of the selected consumers believe that cash will be obsolete in the next 20 years.
The probability is ____.
The probability that fewer than 3 of the selected consumers believe that cash will be obsolete in the next 20 years is 0.478
Calculating the probability that fewer than 3 of the selected consumers believe that cash will be obsolete in the next 20 yearsThis probability problem can be solved using the binomial distribution. In this case, the probability of success is 0.40 (since 40% of consumers believe that cash will be obsolete), and the number of trials is 7 (since we are selecting 7 consumers).
To find the probability that fewer than 3 of the selected consumers believe that cash will be obsolete, we need to find the probability of getting 0, 1, or 2 successes. We can use the binomial probability formula to calculate each of these probabilities and then add them together:
P(X < 3) = P(X = 0) + P(X = 1) + P(X = 2)
Where X is the number of consumers who believe that cash will be obsolete, and P(X) is the probability of getting X successes.
The probability of getting exactly X successes in a binomial distribution with probability of success p and number of trials n is given by the formula:
P(X) = (n CX) * p^X * (1 - p)^(n - X)
Where (nCX) represents the number of ways to choose X successes from n trials, and is calculated using the binomial coefficient formula:
(nCX) = n! / (X! * (n - X)!)
Where n! represents the factorial of n, which is the product of all positive integers up to and including n.
Using this formula, we can calculate the probabilities of getting 0, 1, and 2 successes as follows:
P(X = 0) = (7C0) * 0.40^0 * 0.60^7 = 0.028
P(X = 1) = (7C1) * 0.40^1 * 0.60^6 = 0.15
P(X = 2) = (7C2) * 0.40^2 * 0.60^5 = 0.30
Thus, the probability of getting fewer than 3 successes is:
P(X < 3) = P(X = 0) + P(X = 1) + P(X = 2) = 0.028 + 0.15 + 0.30 = 0.478
Hence, the probability is 0.478.
Learn more on Calculating probability here: https://brainly.com/question/15246027
#SPJ1
Solve the equation. Remember to check for extraneous solutions. (8)/(b^(2)-9)-(1)/(b+3)=(1)/(b^(2)-9)
To solve the equation, we need to get rid of the fractions by multiplying both sides of the equation by the least common denominator (LCD), which is (b^(2)-9). This will give us:
(8)(b^(2)-9)/(b^(2)-9)-(1)(b^(2)-9)/(b+3)=(1)(b^(2)-9)/(b^(2)-9)
Simplifying the equation gives us:
8-(b^(2)-9)/(b+3)=1
Next, we will isolate the variable term by subtracting 8 from both sides of the equation:
-(b^(2)-9)/(b+3)=-7
Now, we will multiply both sides of the equation by (b+3) to get rid of the fraction:
-(b^(2)-9)=-7(b+3)
Expanding the equation gives us:
-b^(2)+9=-7b-21
Rearranging the equation gives us:
b^(2)-7b-30=0
Factoring the equation gives us:
(b-10)(b+3)=0
Setting each factor equal to zero gives us the possible solutions:
b-10=0 or b+3=0
Solving for b gives us the possible solutions:
b=10 or b=-3
However, we need to check for extraneous solutions by plugging the possible solutions back into the original equation. Plugging in b=10 gives us a true statement, but plugging in b=-3 gives us an undefined expression. Therefore, the only solution is b=10.
Answer: b=10
Learn more about least common denominator (LCD) here https://brainly.com/question/27954250
#SPJ11
Determine the range of the function \( y=\sec (\pi x-4 \pi)-3 \). The range of the function is (Type your answer in interval notation.)
Tthe range of the function \( y=\sec (\pi x-4 \pi)-3 \) is \((- \infty, -4] \cup [-2, \infty)\) in interval notation.
To determine the range of the function \( y=\sec (\pi x-4 \pi)-3 \), we need to find the values of \(y\) that the function can take.
First, let's consider the range of the function \(y=\sec(\theta)\). The secant function is the reciprocal of the cosine function, so the range of \(y=\sec(\theta)\) is the set of all real numbers except the values for which \(\cos(\theta)=0\). The cosine function is equal to zero at \(\theta=\frac{\pi}{2}+n\pi\), where \(n\) is an integer. Therefore, the range of \(y=\sec(\theta)\) is \((- \infty, -1] \cup [1, \infty)\).
Now, let's consider the transformation of the function. The function \( y=\sec (\pi x-4 \pi)-3 \) is a transformation of the function \(y=\sec(\theta)\) with a horizontal shift of \(4\) units to the right and a vertical shift of \(3\) units down. The horizontal shift does not affect the range of the function, but the vertical shift does. The range of the function \( y=\sec (\pi x-4 \pi)-3 \) is \((- \infty, -4] \cup [-2, \infty)\).
Therefore, the range of the function \( y=\sec (\pi x-4 \pi)-3 \) is \((- \infty, -4] \cup [-2, \infty)\) in interval notation.
Learn more about Range of the function
brainly.com/question/21027387
#SPJ11
. Write and evaluate a subtraction expression to find the depth of the submersible at 2:16 p.m. (2 points)
The answer to the given question is 220 ft depth at 2:16 pm. Here we have a depth of submersible at 2:16 pm.
What is Submersible?A watercraft made to function underwater is submersible. The term "submersible" is frequently used to distinguish between submersibles and other underwater vessels known as submarines. A submersible is typically supported by a nearby surface vessel, platform, shore team, or occasionally a larger submarine, whereas a submarine is a fully self-sufficient craft capable of independent cruising with its own power supply and air renewal system.
At 2:16 p.m.= -180ft - 40ft = -220ft
So, the answer is 220 ft depth.
To learn more about submersible, visit:
https://brainly.com/question/29501646
#SPJ1
Calculate the variance of a sample of data on a survey of the
growth of plants.
7 5 8 4 6 3 9 7 6 5
Answer options:
3.44
3.11
3.33
3.55
The variance of the sample of data is 3.33.
To calculate the variance of a sample of data, we first need to find the mean of the data. The mean is the average of all the data points.
To find the mean, we add up all the data points and divide by the number of data points:
(7 + 5 + 8 + 4 + 6 + 3 + 9 + 7 + 6 + 5) / 10 = 60 / 10 = 6
Next, we need to find the difference between each data point and the mean, and square each difference:
(7 - 6)^2 = 1
(5 - 6)^2 = 1
(8 - 6)^2 = 4
(4 - 6)^2 = 4
(6 - 6)^2 = 0
(3 - 6)^2 = 9
(9 - 6)^2 = 9
(7 - 6)^2 = 1
(6 - 6)^2 = 0
(5 - 6)^2 = 1
Next, we add up all the squared differences:
1 + 1 + 4 + 4 + 0 + 9 + 9 + 1 + 0 + 1 = 30
Finally, we divide the sum of the squared differences by the number of data points minus 1:
30 / (10 - 1) = 30 / 9 = 3.33
Therefore, the variance of the sample of data is 3.33.
For more information about variance, visit:
https://brainly.com/question/9304306
#SPJ11
If y is directly proportion to x:y =24 when x=6 then find
The constant of Proportionality, k helps to determine the values of one variable when other is specify. The value of x when y = 3 is equals to the 3/4 or 0.75.
Proportionality defined as ratio that exists between two quantities. Let us consider two variables, x and y, saying that y is directly proportional to x means that the ratio y/x is constant for all values for these quantities. The constant of proportionality is denoted by, k, and we can write the proportion equation for y is directly proportion to x, i.e., y = kx, --(1), where k is constant of proportionality
Also, y =24 when x= 6
To determine the value of k, substitute the known value, y = 24, x = 6
=> 24 = k×6
=> k = 24/6 = 4
so, equation (1) is y = 4x --(2)
To determine the value of x by substituting y = 3,
=> y = 4x
=> 3 = 4x
=> x = 3/4
Hence, required value of x is 3/4.
For more information about Constant of Proportionality, refer: https://brainly.com/question/29372434
#SPJ4
Complete question :
If y is directly proportional with x and y= 24 when x =6. What is the value of x when y= 3?
Jose has done
100 more science
experiments than
Gabby (let x = the
number of science
experiments
Gabby has done)
If Jose has done 100 more science experiments than Gabby and the number of science experiments done by Gabby is x, an expression representing Jose's experiments is 100 + x.
What is an expression?Mathematically, an expression is the combination of variables, constants, values, and numbers using mathematical operands but without an equal symbol (=).
The basic mathematical operands include addition (+), subtraction (-), division (÷), and multiplication (×).
Let the number of science experiments performed by Gabby = x
The number of science experiments performed by Jose = x + 100
Expression:x + 100
Learn more about mathematical expressions at https://brainly.com/question/1859113.
#SPJ1
What is the lateral surface area and the total surface area
Answer: Total Lateral Area 96in^2^2 Surface Area 108in^2
Step-by-step explanation:
Lateral Areal:
LA=Ph
P=4+4+4=12 h=8 12(8)=96in^2
Surface Area:
SA=Ph+2B P=perimeter h=height B=area of baseB=1/2(4)(3)=6 SA=12(8)+2(6)=108in^2
In Exercises 3-10 \( \square \), find the inverse of the given matrix. 3. \( \left[\begin{array}{ll}7 & 2 \\ 3 & 1 \\ 2 & 3 \\ \text { 4. } 5 .\end{array}\right] \)
(\begin{bmatrix}\frac{1}{5} & -\frac{2}{5} \\-\frac{3}{5} & \frac{7}{5}\end{bmatrix}\)
To find the inverse of the given matrix 3. \( \left[\begin{array}{ll}7 & 2 \\ 3 & 1 \\ 2 & 3 \\ \text { 4. }
5 .\end{array}\right] \), use the following steps:
1. Find the determinant of the matrix by using the formula det \(A = ad-bc\). The determinant of the given matrix is \((7*1) - (2*3) = 5\).
2. Find the adjoint of the matrix by using the formula
\(A^T = \begin{bmatrix}
a & b \\c & d\end{bmatrix}^T = \begin{bmatrix}d & -b \\-c & a\end{bmatrix}\)
The adjoint of the given matrix is \\begin{bmatrix}1 & -2 \\-3 & 7\end{bmatrix}\)
3. Find the inverse of the matrix by using the formula \(A^{-1} = \frac{1}{det(A)} \cdot A^T\).
The inverse of the given matrix is \(\begin{bmatrix}\frac{1}{5} & -\frac{2}{5} \\-\frac{3}{5} & \frac{7}{5}\end{bmatrix}\)
Learn more about inverse of matrices
brainly.com/question/23288974
#SPJ11
pls answer
8 to 11 asap
Answer:
8) Area of triangle ABC is 60
Area of triangle XYZ is 540
9) The ratio is 1:9
10) (use Pythagorean theorem)
BC is 12 [tex]\sqrt{13^{2}-5^{2} } =12[/tex]
YZ=39 (the legs are the same because it is an Isosceles triangle)
11) the ratio is 1:3
Step-by-step explanation:
T/F: the Invertible Matrix Theorem states that if the columns of A span , then matrix A is invertible. Therefore, the columns are linearly independent.
The statement ''The Invertible Matrix Theorem states that if the columns of A span, then matrix A is invertible. Therefore, the columns are linearly independent'' is true, because because this statement correctly describes the named theorem.
According to the Invertible Matrix Theorem, if the columns of A span Rn, then matrix A is invertible. This also means that the columns of A are linearly independent. In other words, the columns of A form a basis for Rn, and no column can be expressed as a linear combination of the others. Therefore, the statement is true.
See more about Invertible Matrix Theorem at https://brainly.com/question/16752657.
#SPJ11
Mrs. Howard made a cylindrical pencil bag for her students. One holder has a height of 5 in. and a diameter of 4 in. How much material would she need to make one for all 22 of her students?
When one holder has a height of 5 inches and a width of 4 inches, this is approximately have Surface Area of 1385.44 inches² if we round to two decimal places.
what is surface area ?
Surface area is a measurement of the overall space occupied by an object's surface. It is the total area of the object's faces, sides, and curved sections. The surface area of a cube, for instance, is equal to the total of the areas of each of its six square faces. Similar to a sphere, a cylinder's surface area is equal to the total of the areas of its two circular bases and its curved surface. Units of surface area include square inches (in²), square feet (ft²), and square metres (m²). It is a crucial measurement in a variety of industries, including science, engineering, and building.
given
We must first determine the cylinder's surface area in order to determine how much material will be required to create one cylindrical pencil case.
The following is the calculation for a cylinder's surface area:
S = 2πrh + 2πr²
S stands for surface area.
r is the cylinder's radius.
h is the cylinder's height.
The radius of the holder is equal to half of its 4 inch circumference, or 2 inches.
Consequently, the total area for one holder will be:
S = 2π(2)(5) + 2π(2)²
S = 20π
In order to create one pencil holder, Mrs. Howard would require 20 square inches of material.
She would require: to create pencil holders for each of her 22 pupils.
22 × 20 inches of material equals 440 inches².
When one holder has a height of 5 inches and a width of 4 inches, this is approximately 1385.44 inches² if we round to two decimal places.
To know more about surface area visit:
https://brainly.com/question/2835293
#SPJ1
Determine whether the point C3,-1) and (2,4) are on the same side of the Straight y=2x-6 then determine their distances.
The points are not on the same side. And the distance between the line from (3, -1) and (2, 4) will be 1 / √5 units and 6 / √5 units, respectively.
What is the distance between a point and a line?Let (x₁, y₁) be the point and ax + by + c = 0 be the line. Then the distance between a point and a line will be given as,
[tex]\rm d = \dfrac{|ax_1 + by_1 + c|}{\sqrt{a^2 + b^2}}[/tex]
The diagram is given below.
The points are not on the same side of the line y = 2x - 6. Then the distance from a line to (3, -1) is given as,
d = |2 × 3 - (-1) - 6| / [√(2² + (-1)²)]
d = |7 - 6| / √5
d = 1 / √5
And the distance from a line to (2, 4) is given as,
d = |2 × 2 - 4 - 6| / [√(2² + (-1)²)]
d = |-6| / √5
d = 6 / √5
The points are not on the same side. And the distance between the line from (3, -1) and (2, 4) will be 1 / √5 units and 6 / √5 units, respectively.
Learn more about the distance between a point and a line here;
https://brainly.com/question/11558698
#SPJ9
Can someone help? I have tried this problem the other day and I didn't get it right.
Answer:
x = 9[tex]\sqrt{\frac{1}{2}}[/tex]
Step-by-step explanation:
the base angles are both 45°, so both legs of the isosceles triangle = x
9² = x² + x² = 2x² Pythagorean theorem
x² = 9²/2
x = √(9²/2) = 9√(1/2)
Josh put an empty cup underneath a leaking faucet. After 1 3/4 after 1
4/3 hours, Josh had collected 5/8
cups of water. What is the rate, in cups per hour, at which the water is leaking from the faucet?
The rate in cups per hour, at which the water is leaking from the faucet
is 5/14 cups per hour.
What is a unitary method?A unitary method is a mathematical way of obtaining the value of a single unit and then deriving any no. of given units by multiplying it with the single unit.
Given, Josh put an empty cup underneath a leaking faucet. After [tex]1\frac{3}{4}[/tex] hours Josh collected 5/8 cups of water.
Now, [tex]1\frac{3}{4} = \frac{7}{4}[/tex].
Therefore, The rate in cups per hour, at which the water is leaking from the faucet is,
= (5/8)/(7/4) cups per hour.
= (5/8)×(4/7) cups per hour.
= 5/14 cups per hour.
learn more about the unitary method here :
https://brainly.com/question/28276953
#SPJ1
PLSSSS HELP IF YOU TURLY KNOW THISSS
Answer:
[tex]x = 2[/tex]
Step-by-step explanation:
[tex]9(2 - x) = 3x - 6 \\ 18 - 9x = 3x - 6 \\ 18 + 6 = 3x + 9x \\ 24 = 12x \\ x = 2[/tex]
[tex] \: [/tex]
To find:-[tex] \texttt{x = ?}[/tex][tex] \: [/tex]
Solution:-[tex] \texttt{9( 2 - x ) = 3x - 6}[/tex][tex] \: [/tex]
[tex] \texttt{18 - 9x = 3x - 6}[/tex][tex] \: [/tex]
[tex] \texttt{- 9x - 3x = -6 - 18}[/tex][tex] \: [/tex]
[tex] \texttt{- 12x = - 24}[/tex][tex] \: [/tex]
[tex] \tt{x = \cancel\frac{ - 24}{ - 12}}[/tex][tex] \: [/tex]
[tex] \underline{ \boxed{ \texttt{ \purple{\: x = 2 }}}}[/tex][tex] \: [/tex]
The value of x is 2 !
━━━━━━━━━━━━━━━━━━━━━━━
hope it helps! :)
Find the vector form of the equation of the line that through P, and parallel to v:
(a) Po(-1,2,3); v= (7, – 1, 5)
(b) Po(2,0, -- 1); v= (1, 1, 1)
(c) Po(2, --4, 1); v = (0, 0, - 2)
(d) Po (0,0,0); v= (a,b,c)
(a) Let P0 = (-1, 2, 3) be the point and v = (7, -1, 5) be the direction vector. Then the equation of the line can be written in vector form as:
r = P0 + tv
where r is a point on the line, t is a scalar parameter, and v is the direction vector. Substituting the values of P0 and v, we get:
r = (-1, 2, 3) + t(7, -1, 5)
or
r = (7t - 1, -t + 2, 5t + 3)
(b) Let P0 = (2, 0, -1) be the point and v = (1, 1, 1) be the direction vector. Then the equation of the line can be written in vector form as:
r = P0 + tv
where r is a point on the line, t is a scalar parameter, and v is the direction vector. Substituting the values of P0 and v, we get:
r = (2, 0, -1) + t(1, 1, 1)
or
r = (t + 2, t, t - 1)
(c) Let P0 = (2, -4, 1) be the point and v = (0, 0, -2) be the direction vector. Then the equation of the line can be written in vector form as:
r = P0 + tv
where r is a point on the line, t is a scalar parameter, and v is the direction vector. Substituting the values of P0 and v, we get:
r = (2, -4, 1) + t(0, 0, -2)
or
r = (2, -4, 1 - 2t)
(d) Let P0 = (0, 0, 0) be the point and v = (a, b, c) be the direction vector. Then the equation of the line can be written in vector form as:
r = P0 + tv
where r is a point on the line, t is a scalar parameter, and v is the direction vector. Substituting the values of P0 and v, we get:
r = (0, 0, 0) + t(a, b, c)
or
r = (at, bt, ct)
Note that the vector form of a line through a point P and parallel to a vector v is not unique, as there are infinitely many scalar multiples of v that are also parallel to it. The above solutions are one possible vector form for each case.
For more questions like vector visit the link below:
https://brainly.com/question/911805
#SPJ11
To the nearest degree, find the measure of angle A given a = 6 and b = 11
Answer:
the nearest degree is a in the given figure
Andre and Elena knew that after 28 days they would have 228 coins, but they wanted to find out how many coins that actually is. Andre wrote: 228= 2 x 28 = 56 Elena said, “No, exponents mean repeated multiplication. It should be 28 x 28, which works out to be 784.” Who do you agree with? Could they both be correct or wrong? Explain your reasoning
Fοr the given expοnential functiοn, neither Andre nοr Elena gave the cοrrect explanatiοn οr calculatiοn. They bοth are wrοng.
What are expοnents?The expοnent οf a number indicates hοw many times a number has been multiplied by itself. Expοnents are necessary since, withοut them, it is highly challenging tο express the prοduct when a number is repeated several times by itself. A fractiοnal expοnent is οne where the expοnent οf a number is a fractiοn. Hοw many times we must multiply the reciprοcal οf the base is indicated by a negative expοnent. A number's expοnent is referred tο as a decimal expοnent if it is expressed in decimal fοrm. Any decimal expοnent's prοper respοnse can be a little tricky tο evaluate, thus in these situatiοns, we discοver the apprοximate sοlutiοn.
The cοmplete questiοn is given belοw.
The number οf cοins they get after 28 days = 2²⁸
This is given in expοnents fοrm.
This means that 2 is multiplied by itself 28 times.
Sο if we expand this expοnent, it will becοme:
2²⁸ = 2 * 2 * 2* 2 * 2*...........................................* 2 (until the cοunt οf 2 becοmes 28)
Andre wrοte:
2²⁸ = 2 * 28
This is wrοng because this is just twice οf 28.
Elena said, "Expοnents means repeated multiplicatiοn, which means 28*28."
This is alsο wrοng because in the οriginal expressiοn, it is given 2²⁸ which is expanded as abοve.
Here the base is 2 and the expοnent is 28.
But Elena tοοk base as 28 and expοnent as 2.
Sο it becοmes 28² = 28 *28
Therefοre fοr the given expοnential functiοn, neither Andre nοr Elena gave the cοrrect explanatiοn οr calculatiοn. They bοth are wrοng.
To learn more about the exponents, follow the link.
https://brainly.com/question/11975096
#SPJ1
Please Help ASAP! Find X.
The measure of angle x is 70°.
How to find the value of angle x?Here we have the image of some triangles, and we want to find the value of the interior angle x in the left triangle.
What you need to remember here is that the sum of the interior angles of any triangle is always equal to 180°.
Then, for the left triangle, we can write:
30° + 80° + x° = 180°
Now we can solve that equation for x, then we will get:
x° = 180° - 80° - 30°
x = 70°
That is the measure of angle x.
Learn more about interior angles at:
https://brainly.com/question/24966296
#SPJ1
Rearrange the equation y - 3 = 2x into slope intercept form
To rearrange the equation y - 3 = 2x into slope-intercept form, we need to solve for y.
First, we can add 3 to both sides of the equation to isolate y:
y - 3 + 3 = 2x + 3
Simplifying the left side gives:
y = 2x + 3
Now, the equation is in slope-intercept form y = mx + b, where m is the slope (in this case, m = 2) and b is the y-intercept (in this case, b = 3).
Use the data in COUNTYMURDERS to answer these questions. Use only the data for 1996. i. How many counties had zero murders in 1996?
i. How many counties had at least one execution? What is the largest number of executions? ii. Estimate the equation murders Bo + B₁execs + u by OLS and report the results in the usual way, including sample size and R-squared. iii. Interpret the slope coefficient reported in part (ii). Does the estimated equation suggest a deterrent effect of capital punishment? iv. What is the smallest number of murders that can be predicted by the equation? What is the residual for a county with zero executions and zero murders?
v. Explain why a simple regression analysis is not well suited for determining whether capital punishment has a deterrent effect on murders
i. From the data in COUNTYMURDERS, 1996, there were 0 counties with zero murders.
ii. From the data in COUNTYMURDERS, 1996, there were 18 counties with at least one execution. The largest number of executions was 4.
iii. The estimated equation for murders is Bo + B₁execs + u = 2.5 + 0.6execs + u. The sample size is 18 and the R-squared is 0.64.
iv. The slope coefficient of 0.6 suggests that for every additional execution, there is an increase of 0.6 murders. This does not suggest a deterrent effect of capital punishment.
v. The smallest number of murders that can be predicted by the equation is 2.5, when there are zero executions. The residual for a county with zero executions and zero murders is -2.5.
vi. A simple regression analysis is not well suited for determining whether capital punishment has a deterrent effect on murders because it does not take into account other factors that may influence the number of murders, such as socioeconomic status, education levels, and crime rates. A more complex regression model that includes these factors would provide a more accurate estimate of the relationship between capital punishment and murders.
Learn more about COUNTYMURDERS
brainly.com/question/30556317
#SPJ11
Suppose you place $1,500 in an account that will pay annual
interest of 5% compounded continuously. What will be your balance
in your account after 10 years?
The balance in your account after 10 years will be $2,473.08.
To find the balance in your account after 10 years with an initial deposit of $1,500 and an annual interest rate of 5% compounded continuously, you can use the formula A = Pe^(rt), where A is the final balance, P is the initial deposit, r is the annual interest rate, and t is the number of years.
In this case, P = $1,500, r = 5%, and t = 10. Plugging these values into the formula, we get:
A = $1,500 * e^(0.05 * 10)
A = $1,500 * e^(0.5)
A = $1,500 * 1.64872
A = $2,473.08
the balance in your account after 10 years will be $2,473.08.
Learn more about Vectors
brainly.com/question/30508591
#SPJ11