Answers
Answer:
alternate
is this an exam or test?
Related Questions
PLEASE HELP!!! ILL GIVE BRAINLIEST!
Answers
Answer: Last Option (Red In Colour)
Reason: Since Point Slope Form is y -y1 = m(x-x1), We just plug in the numbers. Four will go into the x1 spot, and Zero will go into the y1 spot, and 1/2 in the m spot since it's the slope. So, after plugging everything in, the equation is y - 0 = 1/2 ( x- 4)
I hope this helps, and Happy Holidays! :)
find the surface area of the cube
Answers
Answer:
150
Step-by-step explanation:
Knowing that a cube has 6 faces which all are equal.
Thus, Multiply the area of one face by the number of faces to get the total surface area of the cube.
Since, it given that one face is 5 cm
Then, we also must know the formula for area of a cube
Which is:
\(Area=6a^2\)
Thus,
\(Area=6a^2\)
\(Area=6(5)^2\)
\(Area=6(25)\)
\(Area=150\)
Kavinsky
a school counselor wants to compare the effectiveness of an online sat preparation program with an in-person sat preparation class. for an experiment, the counselor recruits 30 students who have already taken the sat once. the response variable will be the improvement in sat score. select all true statements. the completely randomized design is preferred the completely randomized design is better because it eliminates bias by considering all students to be equal at the start of the experiment. the matched pair design is preferred students who did not score well the first time they took the exam may benefit greatly from the class. by matching students by initial score, we can account for the variability in improvement that is introduced by the variability in student ability, making it easier to determine which program is more effective. students who scored well on the exam initially may not have much room for improvement even if the treatments are effective.
Answers
The correct statements for comparing the effectiveness of the SAT preparation program are the 3rd, 4th, 5th, 6th statements.
The statements in order are
The completely randomized design is preferredThe completely randomized design is better because it eliminates bias by considering all students to be equal at the start of the experimentThe matched pair design is preferredStudents who did not score well the first time they took the exam may benefit greatly from the classBy matching students by initial score, we can account for the variability in improvement that is introduced by the variability in student ability, making it easier to determine which program is more effectiveStudents who scored well on the exam initially may not have much room for improvement even if the treatments are effectiveSince, school counselor want to compare effectiveness of SAT preparation program with response variable will be the improvement in SAT score.
We can consider this as a improvement assessment, so that the initial abilities of each student will be different. With this we can see the improvement from student with bad initial score, and for the student that has a good score in initial exam they barely to have improvement.
For example student A have initial score 600 and student B have initial score 1300 after preparation program student A have final score 1200 and student B have final score 1350. In the example, we can see 200% improvement from student A and only 4% improvement from student B.
Also, with matching pair design that based on variable, we can see the variability in improvement making it easier to know the effectiveness of SAT preparation program than the randomized design.
Thus, the correct statements is the 3rd, 4th, 5th, 6th statements.
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Can you please help me?
Answers
Answer:
\(\frac{20}{36}\)
Step-by-step explanation:
the total amount of squares within this square is 36
and the number of shaded squares would be 20
so if 20 squares out of 36 squares are shaded, then the fraction is
\(\frac{20}{36}\)
or 55.56%
(to find percentage multiply \(\frac{20}{36}\) by 100)
Answer:
5/9
= 55.56% ( to the nearest hundredth).
Step-by-step explanation:
The total number of little squares in the large square = 6*6 = 36.
Total number of shaded squares = 2*6 + 2*4
= 12 + 8 = 20.
So the fraction of shaded part
= 20/36
= 5/9.
As a percentage this is 5*100/9
= 55 5/9%
= 55.55..... %
What similarity postulate, if any, can be used to show that the following two triangles are similar?
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Answer:
If two of the angles are the same, the third angle is the same and the triangles are similar.
Step-by-step explanation:
If two of the angles are the same, the third angle is the same and the triangles are similar.
Can someone plz help me!!! I’m being timed!!!!
Answers
Answer:
Step-by-step explanation:
Answer:
2:12
4:24
6:36
8:48
what would the answer be and please show your work
-4x=32
Answers
Answer:
X=-8
Step-by-step explanation:
-4(-8)=32
Answer:
X = -8
Step-by-step explanation:
First, you need to understand to "do the opposite" in both sides of your equation. In this problem, -4 is being multiplied by x. To get x by itself, we must do the opposite, which means dividing both sides by -4 in this problem.
Next, you need to understand how the negative in the -4 will affect your answer. When dividing a positive number by a negative number, the resulting answer will be negative.
Finally, just put all your steps together! Divide both sides by -4, giving you x = 8. Then, apply the negative from the 4 and you'll get a final answer of x = -8! Hope this helps!
The textbook notes that in 2002 there were 33% fewer fluid-milk processing plants processing 46% more milk per plant than in 1992. The shift toward fewer and larger operations in an industry is called
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The shift toward fewer and larger operations in an industry is called consolidation. The reason for consolidation is to benefit the owners of the business by increasing efficiency and economies of scale, among other things. As the textbook notes, there were 33% fewer fluid-milk processing plants in 2002 than there were in 1992.
Despite the reduction in the number of facilities, milk production increased by 46 percent per plant. The same trend is occurring in a number of other industries. The process of consolidation is a response to a variety of factors, including increased competition, consumer demands, and technological advances.
In some cases, the consolidation of an industry can lead to increased efficiencies and lower prices for consumers. However, the negative aspects of consolidation should also be considered. When a single entity controls a significant portion of an industry,
it can lead to reduced competition and less innovation. It can also lead to higher prices for consumers if the entity has too much power in the marketplace. Furthermore, the consolidation of industries can lead to significant job losses in some areas, as fewer firms mean fewer jobs.
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The denominator of a rational number is greater than its numerator by 5. If 5 is subtracted from the numerator and 4 is added to its denominator, the new number is ⅛ . Find the rational number.
Answers
Answer:
7/12.
Step-by-step explanation:
=x/x+5.
x-5/x+5+4=⅛
x-5/x+9=⅛
x-5=⅛(x+9)
x-5=⅛x+1⅛
x-⅛x=1⅛+5
⅞x=49/8
7x=49
x=7
thus the initial fraction is x/x+5= 7/12
A rational number is a fraction
Toby, Kate, and Jim had a challenge to see who could run the most in one day. Toby ran 3 miles. Kate ran 4 times as many miles as Toby, and Jim ran 2 times as many miles as Kate. How many miles did Jim run?
Answers
Answer:
24 miles
Explanation:
3 x 4 = 12
12 x 2 = 24
Robin reads 5 pages of a book in 4 minutes. Based on this rate, what is the total number of minutes it will take Robin to read 200 pages?
Answers
Answer: 160 minutes
Step-by-step explanation: 200 divided by 5 is 40, then 40 times 4 is 160
Division is one of the four fundamental arithmetic operations. The time it will take Robin to read 200 pages of the book at the same rate is 160 minutes.
What is Division?The division is one of the four fundamental arithmetic operations, which tells us how the numbers are combined to form a new one.
Given that it takes Robin 4 minutes to read 5 pages of a book. Therefore, the rate at which Robin reads a page of the book is,
Rate at which Robin reads = 4 minutes/5 pages = 0.8 minutes per page
Now, to know the time it will take for Robin to read the book of 200 pages at the same rate can be found by multiplying the number of pages by the rate of reading. Therefore, the rate at which Robin reads is,
Time to read 200 pages = 0.8 minutes per page × 200 pages
= 160 minutes
Hence, the time it will take Robin to read 200 pages of the book at the same rate is 160 minutes.
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Which of the following could be an example of a function with a domain
(-∞0,00) and a range (-∞,4)? Check all that apply.
A. V = -(0.25)* - 4
-
□ B. V = − (0.25)*+4
c. V = (3)* +4
□ D. V = − (3)* — 4
-
Answers
The correct options that could be an example of a function with a domain (-∞0,00) and a range (-∞,4) are given below.Option A. V = -(0.25)x - 4 Option B. V = − (0.25)x+4
A function can be defined as a special relation where each input has exactly one output. The set of values that a function takes as input is known as the domain of the function. The set of all output values that are obtained by evaluating a function is known as the range of the function.
From the given options, only option A and option B are the functions that satisfy the condition.Both of the options are linear equations and graph of linear equation is always a straight line. By solving both of the given options, we will get the range as (-∞, 4) and domain as (-∞, 0).Hence, the correct options that could be an example of a function with a domain (-∞0,00) and a range (-∞,4) are option A and option B.
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Helpppp please ASAP
Answers
Answer:
I got 12√ 2
PLZ CORRECT ME IF I AM WRONG PLZ AND THXS YOU
Step-by-step explanation:
Select the correct answer. which equation is equivalent to the given equation? a. b. c. d.
Answers
Answer:
sorry to select correct answer there is no any equation please make sure ur question is complete
marissa got an 85% on her math quiz. She had 34 questions correct. how many questions were on the quiz?
Answers
Answer: 40 questions I think
Step-by-step explanation:
Answer:
40 is the answer
Step-by-step explanation:
85/100=34/x
Multiply.
(-3x + 4) (2x - 1)
Answers
Answer:
-6x²+11x-4
Step-by-step explanation:
Apply the distributive property by multiplying each term of -3x+4 by each term of 2x-1
you get:-6x²+3x+8x-4
combine 3x and 8x to get 11x thank youWrite a polynomial function f of least degree that has rational coefficients, a leading coefficient of 1 and the given zeros.
1. -5, 4
2. -3, -1
-1,
-1, 2, 6
-2, -1, 10
Answers
The polynomial function f with the specified properties and zeros is a quadratic equation.
The zeros of -5 and 4 indicate that the factors of the polynomial are (x + 5) and (x - 4), respectively. To obtain a polynomial with rational coefficients and a leading coefficient of 1, we multiply these factors together: f(x) = (x + 5)(x - 4).
The zeros of -3 and -1 suggest that the factors of the polynomial are (x + 3) and (x + 1), respectively. To achieve rational coefficients and a leading coefficient of 1, we multiply these factors: f(x) = (x + 3)(x + 1).
The zero of -1 indicates the factor (x + 1) for the polynomial. Since no other zeros are given, this factor is quadratic on its own: f(x) = (x + 1)^2.
The zeros of -1, 2, and 6 imply the factors (x + 1), (x - 2), and (x - 6), respectively. To obtain a polynomial with rational coefficients and a leading coefficient of 1, we multiply these factors together: f(x) = (x + 1)(x - 2)(x - 6).
The zeros of -2, -1, and 10 suggest the factors (x + 2), (x + 1), and (x - 10), respectively. To achieve rational coefficients and a leading coefficient of 1, we multiply these factors: f(x) = (x + 2)(x + 1)(x - 10).
In summary, the polynomial functions f with the given zeros have degrees as follows: 1. Degree 2, 2. Degree 2, 3. Degree 2, 4. Degree 3, 5. Degree 3.
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To get an answer to increase you multiply by A 1/2 B 3/4 C 4/5 D 6/5
Answers
Answer:
D
Step-by-step explanation:
Use inverse matrix to solve the linear system. Solve #19
Answers
19)
The given system of equations is,
\(\begin{gathered} 4x-3y=11 \\ 5x-2y=12 \end{gathered}\)The above system of equations can be written in matrix form as,
\(\begin{bmatrix}{4} & {-3} & {} \\ {5} & {-2} & {} \\ {} & {} & \end{bmatrix}\begin{bmatrix}{x} & {} & {} \\ {y} & & {} \\ {} & {} & \end{bmatrix}=\begin{bmatrix}{11} & {} & \\ {12} & {} & \\ {} & {} & \end{bmatrix}\text{ -----(1)}\)Here,
\(A=\begin{bmatrix}{4} & {-3} & {} \\ {5} & {-2} & {} \\ {} & {} & \end{bmatrix},\text{ X=}\begin{bmatrix}{x} & {} & {} \\ {y} & & {} \\ {} & {} & \end{bmatrix}\text{ },\text{ B=}\begin{bmatrix}{11} & {} & \\ {12} & {} & \\ {} & {} & \end{bmatrix}\)Therefore, equation (1) can be written as,
\(AX=B\)Therefore,
\(X=A^{-1}B\text{ -------(2)}\)Now, we need to calculate the inverse of A.
(Note:
Let a 2x2 matrix P is of the form given below.
\(P=\begin{bmatrix}{a} & {b} & {} \\ {c} & {d} & {} \\ {} & {} & {}\end{bmatrix}\)The inverse of the matrix P is,
\(\begin{gathered} P^{-1}=\frac{1}{|P|}\begin{bmatrix}{d} & {-b} & {} \\ {-c} & {a} & {} \\ {} & {} & {}\end{bmatrix} \\ =\frac{1}{ad-bc}\begin{bmatrix}{d} & {-b} & {} \\ {-c} & {a} & {} \\ {} & {} & {}\end{bmatrix} \end{gathered}\))
Similar to the inverse matrix of 2x2 matrix P, the inverse matrix of A can be written as,
\(\begin{gathered} A^{-1}=\frac{1}{4\times(-2)-(-3)\times5}\begin{bmatrix}{-2} & {3} & {} \\ {-5} & {4} & {} \\ {} & {} & {}\end{bmatrix} \\ =\frac{1}{-8+15}\begin{bmatrix}{-2} & {3} & {} \\ {-5} & {4} & {} \\ {} & {} & {}\end{bmatrix} \\ =\frac{1}{7}\begin{bmatrix}{-2} & {3} & {} \\ {-5} & {4} & {} \\ {} & {} & {}\end{bmatrix} \\ =\begin{bmatrix}{\frac{-2}{7}} & {\frac{3}{7}} & {} \\ {\frac{-5}{7}} & {\frac{4}{7}} & {} \\ {} & {} & {}\end{bmatrix} \end{gathered}\)Now, put the values in equation (2) to find the solution to the system of equations.
\(\begin{gathered} X=A^{-1^{}}B \\ \begin{bmatrix}{x} & {} & {} \\ {y} & & {} \\ {} & {} & \end{bmatrix}=\begin{bmatrix}{\frac{-2}{7}} & {\frac{3}{7}} & {} \\ {\frac{-5}{7}} & {\frac{4}{7}} & {} \\ {} & {} & {}\end{bmatrix}\begin{bmatrix}{11} & {} & \\ {12} & {} & \\ {} & {} & \end{bmatrix} \\ =\begin{bmatrix}{\frac{-2}{7}\times11+\frac{3}{7}\times12} & {} & {} \\ {\frac{-5}{7}\times11+\frac{4}{7}\times12} & & {} \\ {} & {} & {}\end{bmatrix} \\ =\begin{bmatrix}{\frac{-22}{7}+\frac{36}{7}} & {} & {} \\ {\frac{-55}{7}+\frac{48}{7}} & & {} \\ {} & {} & {}\end{bmatrix} \\ =\begin{bmatrix}{\frac{-22+36}{7}} & {} & {} \\ {\frac{-55+48}{7}} & & {} \\ {} & {} & {}\end{bmatrix} \\ =\begin{bmatrix}{\frac{14}{7}} & {} & {} \\ {\frac{-7}{7}} & & {} \\ {} & {} & {}\end{bmatrix} \\ \begin{bmatrix}{x} & {} & {} \\ {y} & & {} \\ {} & {} & \end{bmatrix}=\begin{bmatrix}{2} & {} & {} \\ {-1} & & {} \\ {} & {} & {}\end{bmatrix} \end{gathered}\)Therefore, the solution to the system of equations using inverse matrix is x=2 and y=-1.
Evaluate for(+7)-(-3)
Answers
Answer:
10
Step-by-step explanation:
When we subtract a negative number, it's basically a double negative, kind of like how we don't use those in English. We want to turn that into a positive, and double negatives are positive.
So, instead of 7-(-3), we get 7+3, or 10
Answer:
10
Step-by-step explanation:
[remember: (+)(+) is (+) itself , (+)(-) is (-) , (-)(-) is (+) ]
(+7)-(-3)
⇒ +7+3
⇒ 10
hope you understood❤
A chemist mixes 4 liters of one acid solution with 10 liters of a 40% solution, resulting in a 30% acid solution. the table shows the amount of each solution used. a table titled acidity, with liters, acid concentration, ad total. the first row is x percent acid, with 4, x, and blank. the second row shows 40 percent acid, with 10, 0.40, and 4. the third row shows mixture, with 14, 0.30, and blank. what is the value of x, the acid concentration of the first solution?
Answers
Answer:
The answer is 0.05
Step-by-step explanation
So to finish the first row, the last blank would be 4 * x, or 4x. To finish the last row, the last blank would be 14*0.30, or 4.2. So the linear equation would be:
4x + 4 = 4.2
Now to solve:
4x + 4 = 4.2
-4 -4
4x = 0.2
/4 /4
x = 0.05
Therefore, the acid concentration of the first solution, x, is 0.05
A horse runs for 112 hours at a speed of 8 m.p.h. How far does it run?
Answers
Answer:
896 miles
Step-by-step explanation:
distance = speed × time.
Fifteen less than the product of
seven and a number is four
What is this in number form
Answers
Answer:
the product of some number (call it x) and 7 is:
7⋅x or just 7x
now take 15 less than that:
7x−15 or y=7x−15
I think that’s the answer
Determine algebraically the number of cats and the number of dogs Bea initially had in her pet shop.
Answers
The equation or system of equations that can be used to determine the number of cats and dogs Bea has in her pet shop is d = 2c - 5 d + 3 = c + 3. We can solve the system of equations using substitution and plug it back into either equation to find the value of d, which is 8 cats and 10 dogs.
How will we determine the number of cats and doge Beas initially had in her pet shop?The equation or system of equations that can be used to find the number of cats and dogs Bea has in her pet shop is:
d = 2c - 5
d + 3 = c + 3
No, Bea's Pet Shop could not initially have 15 cats and 20 dogs. This is because the equation or system of equations states that the number of dogs is five less than twice the number of cats, which would mean that 15 cats would result in 25 dogs, which is not equal to 20.
To determine algebraically the number of cats and the number of dogs Bea initially had in her pet shop, we can use the equation or system of equations that we previously created.
d = 2c - 5
d + 3 = c + 3
We can solve the system of equations using substitution:
d = 2c - 5
d + 3 = c + 3
d + 3 = c + 3
d = c + 3
2c - 5 = c + 3
2c = c + 8
c = 8
Once we determine the value of c, we can plug it back into either equation to find the value of d:
d = 2(8) - 5
d = 15 - 5
d = 10
Therefore, Bea initially had 8 cats and 10 dogs in her pet shop.
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The complete question is: At Bea's Pet Shop, the number of dogs, d, is initially five less than twice the number of cats, c. If she decides to add three more of each, the ratio of cats to dogs will be – Write an equation or system of equations that can be used to find the number of cats and dogs Bea has in her pet shop. Could Bea's Pet Shop initially have 15 cats and 20 dogs? Explain your reasoning. Determine algebraically the number of cats and the number of dogs Bea initially had in her pet shop.
In Exercise 8.2.1 problem #5 , you were asked to write a formula for the given piecewise
function.
The function that models the situation is defined as:
Answers
The piecewise function modeling of a situation is:
f(x) = 3 for 0 < x ≤ 1
f(x) = 3 + 2 (x - 1) for x > 1
f(x) = 0, otherwise
What is a function?A function always has an input and an output.
A function can be one-to-one or onto one.
It simply indicated the relationships between the input and the output.
Example:
f(x) = 4x + 1
f(1) = 7 + 1 = 8
f(2) = 9 x 2 + 1 = 18 + 1 = 19
The outputs of the functions are 8 and 19
The inputs of the function are 1 and 2.
We have,
A piecewise function that can model a situation.
The situation example is given below.
Consider a situation where a taxi company charges a different fare depending on the distance traveled by the passenger.
For example:
The fare is $3 for the first kilometer.
An additional $2 for each additional kilometer traveled.
Now,
We can model this situation with a piecewise function.
f(x) = 3 for 0 < x ≤ 1
f(x) = 3 + 2 (x - 1) for x > 1
f(x) = 0, otherwise
Thus,
The piecewise function are:
f(x) = 3 for 0 < x ≤ 1
f(x) = 3 + 2 (x - 1) for x > 1
f(x) = 0, otherwise
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find the area of the sector of a circle with radius 6 miles formed by a central angle of 2.8 radians:
Answers
The area of the sector of a circle is 28π square miles
The area of a sector of a circle is equal to the area of the circle multiplied by the ratio of the central angle to the full circumference. Therefore, the area of the sector of a circle with a radius of 6 miles formed by a central angle of 2.8 radians is equal to the area of the circle multiplied by the ratio of 2.8 radians to 2π radians (or the circumference of the circle). This means that the area of the sector is equal to 6^2π * 2.8/2π = 28π square miles. In other words, the area of the sector of a circle with a radius of 6 miles formed by a central angle of 2.8 radians is equal to 28π square miles. To visualize this, imagine a pizza slice with a radius of 6 miles. The area of the pizza slice is equal to 28π square miles. The area of the sector is the same as the area of the pizza slice. Therefore, the area of the sector of a circle with radius of 6 miles formed by a central angle of 2.8 radians is equal to 28π square miles.
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Define the domain of the following:
{-2, -1, 0, 2, 5}
{-2, -1, 0, 1, 2, 3, 4, 5}
All Real Numbers
{3, -1, 3, 1, 2}
Answers
The domain of the relation in the graph is:
{-2, -1, 0, 2, 5}
How to define the domain for the graph?A relation maps elements from one set (the domain) into elements from another set (the range).
Such that the domain is represented in the horizontal axis.
In the graph, we can see the points:
{(-2, -3), (-1, -1), (0, 3), (2, 1), (5, 2)}
The domain is the set of the first values of these points, then the domain is:
{-2, -1, 0, 2, 5}
The correct option is the first one.
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I FORGOT HOW TO DO THIS
Answers
Answer
Step-by-step explanation:
The first is 24
second is 72
third is 36
fourth is45
fifth is 66
When two lines intersect, they form two pairs of vertical angles. If the measure of 21 is 60°, what is
the measure of 2?
Answers
What are the 4 properties of a rhombus?
Answers
- Opposite angles are equal in a rhombus.
- The diagonals bisect each other at 90 degrees.
- Adjacent angles add up to 180 degrees.
The 4 properties of the rhombus are:
All sides of the rhombus are equalThe opposite sides of a rhombus are parallelOpposite angles of a rhombus are equaldiagonals bisect each other at right angles.What is a rhombus?A quadrilateral in Euclidean geometry is a rhombus. It's a parallelogram with all sides equal and diagonals intersecting at 90 degrees. In addition, opposing sides are parallel, and opposing angles are equal. This is a fundamental property of the rhombus. A rhombus is shaped like a diamond. As a result, it's also known as a diamond.
Some of the important properties of the rhombus are as follows:The rhombus's sides are all equal. A rhombus' opposite sides are parallel. A rhombus' opposite angles are equal. Diagonals in a rhombus bisect each other at right angles. Diagonals cut the angles of a rhombus in half. 180 degrees is the sum of two adjacent angles. When you connect the midpoints of the sides, you will get a rectangle. When you join the midpoints of half the diagonal sides as the axis of rotation, you will get another rhombus.To know more about Rhombus visit the link
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